3AE5002-2....-.... - Siemens

SION®

Vacuum circuit-breaker

7.2 kV – 17.5 kV, 16 kA – 31.5 kA

24 kV, 16 kA – 25 kA

OPERATING INSTRUCTIONS

Order No.: 9229 0025 176 0-

Version: 12.2017 en

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For your safety

Signal terms and

definitions

Hazards are classified in accordance with ISO 3864-2 using the following keywords:

• DANGER, WARNING, or CAUTION, where there is a risk of personal injury

• NOTE, where there is a risk of material damage.

Hazards are classified and indicated in the operating instructions and on the vacuum

circuit-breaker as follows:

Qualified personnel For the purpose of these operating instructions or the warning notices on the vacu-

um circuit-breaker, qualified personnel are persons who are familiar with the trans-

port, storage, set-up, mounting, commissioning, operation and maintenance of the

product and who have qualifications relevant to their work, e. g.:

• Training and instruction, or authorisation to energise, de-energise, clear, earth

and tag circuits and equipment in accordance with established safety practices.

• Training or instruction in the proper care and use of protective equipment in

accordance with established safety practices.

• Training in first aid.

Product liability

DANGER

Indicates an imminently hazardous situation.

If the hazard is not avoided, it will result in death or serious injury.

WARNING

Indicates a potentially hazardous situation.

If the hazardous situation is not avoided, it could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation.

If the hazardous situation is not avoided, it could result in minor or moderate

injury.

Note

Indicates a potentially harmful situation.

If the harmful situation is not avoided, the product or an item in its vicinity can

sustain damage.

Note

Product liability claims are upheld only if the replacement of the purchased spare

parts is performed by personnel that have been trained and certified by Sie-

mens.

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Contents
For your safety ................................................................................................................................................... 2
List of abbreviations  ............................................................................................................................................  4
Transport, storage and packing .................................................................................................................. 5
Transport .............................................................................................................................................................  5
Unpacking ...........................................................................................................................................................  6
Reuse of transport unit ........................................................................................................................................  9
Storage ...............................................................................................................................................................  9
General information ....................................................................................................................................... 11
Areas of application  ..........................................................................................................................................  11
Standards ..........................................................................................................................................................  12
Type approval as per the German X-Ray Ordinance ........................................................................................  12
Scope of delivery  ..............................................................................................................................................  12
Description ........................................................................................................................................................ 13
Design ...............................................................................................................................................................  13
Interlocks ...........................................................................................................................................................  27
Rating plate .......................................................................................................................................................  30
Technical data ...................................................................................................................................................  30
Ambient conditions ............................................................................................................................................  31
Installation altitudes  ..........................................................................................................................................  31
Operating times .................................................................................................................................................  32
Circuit diagrams  ................................................................................................................................................  33
Mounting ............................................................................................................................................................. 35
Fixing in the switching cubicle ...........................................................................................................................  36
Earthing .............................................................................................................................................................  45
Connecting the low voltage ...............................................................................................................................  46
Electrical connection of the main conductors ....................................................................................................  49
Inserting the vacuum circuit-breaker SION® with withdrawable part  ................................................................  54
Operation ............................................................................................................................................................ 57
Commissioning .................................................................................................................................................  57
First closing operation .......................................................................................................................................  58
Closing ..............................................................................................................................................................  60
Opening ............................................................................................................................................................  60
Maintenance ...................................................................................................................................................... 61
Maintenance and servicing  ...............................................................................................................................  61
Service life of the vacuum interrupters ..............................................................................................................  62
Accessories and spare parts .............................................................................................................................  62
Manufacturer's product liability ..........................................................................................................................  63
Disposal ............................................................................................................................................................  63
Service ..............................................................................................................................................................  63
Index ..................................................................................................................................................................... 65
Central legend .................................................................................................................................................. 67

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List of abbreviations

CO Close-Open

DIN Deutsches Institut für Normung (German Institute for Standardisation)

IEC International Electrotechnical Commission

IP plate Internal arc protection plate

NC Normally closed contact

NO Normally open contact

O Open

VDE Verband Deutscher Elektrotechniker (Association of German Electrical Engineers)

Transport, storage and packing

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Transport, storage and packing

Transport

Transport weight Refer to the delivery documents for the weight of the transport unit.

Place the transport unit on a level, non-slip and pressure-Resistant surface for inter-

mediate storage.

Transport vacuum circuit-breaker to the mounting or storage location in its original

transport unit.

Transporting with crane or fork lift

WARNING

Heavy transport weight

Transport unit may fall and sling gear may break.

Use lifting gear, transport and sling gear suited to the requirements and load-car-

rying capacity. Observe transport symbols.

Note

Observe stacking height

For transport, no more than 3 identical transport units may be stacked on top of

each other.

Observe loads specified on the transport unit.

Note

Secure load

For transport, secure the load in such a way that the transport unit is not at risk.

Fig. 1 Transporting the pallet with carton

Transport, storage and packing

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Transporting with packag-

ing

Transport the transport unit to the mounting or storage location

• with a fork lift or

• with sling gear suspended from a crane

- at a spreading angle of approx. 60° or

- with a spreader bar.

After receipt of delivery:

Checking the transport

unit

• Check the transport unit for damage.

• Major damage must be documented photographically.

• Ensure that any damage to the transport unit is confirmed by the transport com-

pany in writing.

Unpacking

Working equipment Required tools:

- Knife/scissors

- Lifting equipment with lifting gear

- Pliers or lever.

CAUTION

Risk of injury from sharp edges!

Fasteners may break and have sharp edges.

Always use a suitable tool to lever out fasteners.

Note

Do not cut open or damage the carton, since it is designed to be reused and

because of the belt straps located underneath.

Belt straps could be severed on the pallet floor when cutting open the carton.

The vacuum circuit-breaker is fixed to the pallet with belt straps. It is not permitted

to transport the vacuum circuit-breaker on the pallet without using belt straps (see

Fig. 3 to Fig. 4).

Note

Risk of tipping over due to shift in centre of gravity!

Vacuum circuit-breakers with mounted contact arms may tip onto the contact sys-

tem if not fixed.

Before undoing the belt straps, ensure that the vacuum circuit-breaker is posi-

tioned safely and hook sling gear to the points marked with crane hooks (see

Fig. 5 to Fig. 7).

Transport, storage and packing

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Opening the transport unit • Place the transport unit on a level, non-slip and pressure-Resistant surface.

• Remove lifting gear or transport means.

• Remove plastic wrap.

• Lever out fasteners from the carton and lift off carton (see Fig. 1).

• Remove film from the vacuum circuit-breaker.

• In the case of overseas packaging, push the lower film onto the pallet floor.

• Check that the delivery is complete.

• Check vacuum circuit-breaker for damage.

Fig. 2 Removing the fixing from the carton

Note

Do not use the vacuum circuit-breaker in case of damage such as breaks, cracks,

flaking, bent metal parts, damaged plug-in contacts, tears or bare cables.

Send it back in its original transport unit (see “Reuse of transport unit”, page 9).

Fig. 3 Example - unpacking fixed mounting Fig. 4 Example - unpacking version with cartridge in-

sert

Transport, storage and packing

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Transport to the mounting

location

• Remove all tensioning belts and pieces of fastening wood.

• Remove accessory pack and store safely in the packaging for later mounting.

Note

Shifted centre of gravity!

If the vacuum circuit-breakers are lifted with contact arms mounted, the centre of

gravity will be towards the contact arms.

The unit is transported in an inclined position.

Fig. 5 Transporting by crane hook Fig. 6 Transporting by crane eyes

1) Diameter of the hook cross-section max. 19 mm

2) Opening width of the hook min. 18 mm

• Hang sling gear into the crane eyes only.

• Transport to mounting location or leave suspended

from crane for further work operations.

Note

Material damage due to incorrect fixing of sling gear!

The holders (49) will be damaged if ropes or similar sling

gear are fixed under the holders (49).

Only use the crane eyes for sling gear.

Fig. 7 Transporting, only 31.5 kA with distance be-

tween pole centres 150/160

Transport, storage and packing

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Reuse of transport unit

Reusing the transport unit The pallet and the carton as well as most of the components can be reused if the

vacuum circuit-breaker is to be transported again.

Do not reuse severed tensioning belts or plastic wraps.

Pack the vacuum circuit-breaker in reverse order:

• Fix the vacuum circuit-breaker safely to the pallet using the appropriate tools.

• Cover with film and seal with adhesive tape.

• Attach the accessory pack.

• Close the carton securely.

• Before returning to the factory, ask the responsible Siemens representative for a

returned goods number (see also “Service”, on page 63).

• When returning a vacuum circuit-breaker, always specify the type and serial

number (see “Rating plate”, on page 30).

Storage

Note

Keep accessory pack on hand for mounting.

Note

Store the vacuum circuit-breaker in the following condition:

• OPEN switch position

• Closing spring discharged

Note

Risk of corrosion damage if stored improperly!

If the storage conditions listed below are met, the vacuum circuit-breaker can be

stored for up to a year in its transport unit.

If the storage conditions are not met, the vacuum circuit-breaker cannot be stored

in the transport unit for longer than 6 months.

If storage for more than one year is planned, unpack the vacuum circuit-breaker

from the transport unit. Further storage may necessitate fresh corrosion protec-

tion, and it must be ensured that the vacuum circuit-breaker cannot be damaged.

Storage room Transport unit Storage

time

Temperature

range

Comment Number of

units per

stack

Enclosed, dry, well

ventilated, and as

free from dust as

possible, with a rela-

tive humidity of less

than 60 %.

Unopened Max.

6months -40°C to +55°C — Max. 4

Unopened Max.

1 year -5 °C to +40 °C — Max. 4

Open More than

1 year -5 °C to +40 °C

With new corro-

sion protection if

necessary

—

Transport, storage and packing

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Blank page

General information

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General information

Smooth and safe operation of this device requires proper transport, professional

storage, set-up and mounting, as well as careful operation and maintenance.

The basic version and all listed configurations of the vacuum circuit-breakers are

type-tested devices as per IEC.

Areas of application

Vacuum circuit-breakers SION® are 3-pole interior circuit-breakers for a rated volt-

age range of 7.2 kV - 24 kV.

Under normal operating conditions the vacuum circuit-breaker (as per IEC 62271-1

and VDE 0671-1) is maintenance-free up to 10 000 operating cycles.

30,000 operating cycles are connected with maintenance work that must be per-

formed only by personnel trained by Siemens (see also “Maintenance” on p. 61).

WARNING

Dangerous electrical voltage and mechanical movements

When electrical devices are operated, certain parts are inevitably live under

dangerous voltage, and mechanical parts may move very quickly, also

when remotely controlled.

If the warning notices are not observed, serious injury or material damage may

be the result.

Only personnel with the relevant qualifications may work on or in the vicinity of

this device. These personnel must be familiar with all warnings and servicing ac-

tivities specified in these operating instructions.

Note

In the event of subsequent attachments or fittings, e. g. locking parts in connec-

tion with switchgear, ensure that

• fast moving parts are not additionally loaded with masses or forces and

• additional parts have sufficient clearance, in particular from moving and live

parts.

If vacuum circuit-breakers are to be equipped with additional functions by the cus-

tomer, we recommend consulting the factory, since tried and tested solutions are

frequently available (see also “Additional equipment”, on page 18).

Note

The images shown are examples; not all the variants of the vacuum circuit-break-

er are shown here.

General information

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Intended use Vacuum circuit-breakers SION® are suitable for switching any type of alternating

current circuits under normal operating conditions, such as:

• Overhead lines

•Cables

• Transformers

• Capacitors

• Motors

Vacuum circuit-breakers SION® operate in continuous, periodic and short-term op-

eration.

Standards

The vacuum circuit-breakers SION® comply with the regulations:

• IEC 62271-1 and

• IEC 62271-100.

All vacuum circuit-breakers SION® comply with the specifications for C2, E2, M2

and S1-class circuit-breakers as per IEC 62271-100.

Country- and standard-specific deviations from the standards mentioned must be

observed.

Type approval as per the German X-Ray Ordinance

The vacuum interrupters installed in the switching devices are type-approved as

sources of interference radiation according to § 8 of the German X-Ray Ordinance

and they meet the requirements for sources of parasitic X-ray emitters according to

Annex 2 No. 5 of the current German X-Ray Ordinance up to the rated voltage de-

fined in the approval certificate.

Vacuum interrupters with the type identifier can be operated by the owner of the

switchgear without licensing or notification. Keep a printed copy of the certificate in

a suitable central location.

Scope of delivery

Delivery includes:

• Vacuum circuit-breaker SION®

• or vacuum circuit-breaker SION® on cartridge insert

• System-side separating shells (optional)

• Hand crank for circuit-breaker 3AX1530-4B (optional)

• Handle for cartridge insert 3AX1430-2C (optional)

• Accessory pack with fixing brackets and fixing materials (optional for fixed

mounting)

• Accessory pack for plug top with fixing material (optional)

- with 24-pole plug or

- with 64-pole plug

• Accessory pack with 10-pole plug and Faston crimp receptacle with insulating

sleeve (optional for 20-pole connector strip)

• IP plate (optional)

• Shaft cover (optional)

• Operating instructions and unpacking instructions

• Circuit-breaker-specific circuit diagrams

Description

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Description

Design

The images shown are examples; not all the variants of the vacuum circuit-breaker

are shown here.

Fig. 8 12 kV, operating side with separating shells

(towards system side)

Fig. 9 12 kV, pole side

Fig. 10 24 kV, operating side with separating shells

(towards system side)

Fig. 11 24 kV, pole side

20.1 Cover

21 Rating plate

32 Low-voltage plug connector (-X0),

(optional)

42 Pole head

43 Vacuum interrupter

44 Pole contact plate

45 Isolator

46 Pole shell

47 Separating shell to system side

Description

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Contact system in the vacuum interrupters

A slight change in the contact stroke that occurs over the entire useful life has no

effect on the function of the vacuum circuit-breaker.

Fig. 12 Operating mechanism side with separating

shells (towards operating mechanism side)

Fig. 13 Pole side

Fig. 14 Operating mechanism side with separating

shells (towards operating mechanism side)

and withdrawable part

10 Withdrawable part

20.1 Cover

21 Rating plate

32 Low-voltage plug connector (-X0),

(optional)

41 Separating shell to operating mechanism

side (optional)

42 Pole head

43 Vacuum interrupter

44 Pole contact plate

45 Isolator

46 Pole shell

47 Separating shell to system side

Description

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Operating mechanism

The operating mechanism contains all the electrical and mechanical components re-

quired to close or open the vacuum circuit-breaker. Isolators transfer the switching

movement to the pole assemblies.

The operating mechanism is covered by a removable cover (20.1).

Operating and indicator elements

There are openings in the cover (20.1) for the operating and indicator elements.

Functions The CLOSE pushbutton (56.1) is used to close the vacuum circuit-breaker. The mo-

tor immediately charges the closing spring. If the supply voltage for the motor fails,

the closing spring can be charged with a hand crank. There is an opening for this in

the cover (20.1), behind which you will find the hand crank coupling (57.2) of the

gear unit.

To prevent manual switch-on, some designs of the vacuum circuit-breaker can be

fitted with a key-operated interlock (59.3).

Indicators The charged state of the springs is indicated via the spring state indicator (55.1). The

position indicator (56.3) shows the CLOSED or OPEN state. The operations counter

(58) indicates the number of operating cycles. An operating cycle consists of one

closing and one opening.

Fig. 15 Control panel Fig. 16 Control panel

20.1 Cover

55.1 Spring state indicator

56.1 CLOSE pushbutton

56.2 OPEN pushbutton

56.3 Position indicator CLOSED-OPEN

57.2 Hand crank coupling

58 Operations counter

59.3 Key-operated interlock (optional)

Description

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Secondary equipment

Fig. 17 Open operating mechanism

31 Auxiliary switch (-S1)

32 Low-voltage plug connector (-X0), (optional)

33.1 Connector strip (-X1.2 and -X1.4), 20-pole

33.2 Plugs (-X01) and (-X02) for withdrawable part (optional)

33.3 Plug (-X1) only when ordering the 20-pole connector strip

34 Auxiliary contactor (-K1), shutdown (-Y9) and anti-pumping

device

51.1 First shunt release (-Y1)

51.2 2nd release (optional)

52 Closing solenoid (-Y9)

53 Motor (-M1), charging the closing spring

54.1 Position switch (-S12), prevents electrical closing in

mechanical interlock (not shown)

54.2 Position switch (-S21), motor control

54.3 Position switch (-S3), control for (-K1)

54.4 Position switch (-S4), message “Closing spring charged”

54.6 Position switch (-S6), circuit-breaker tripping signal

(optional, not shown)

55 Closing spring

55.1 Spring state indicator

56.3 Position indicator CLOSED-OPEN

57 Gear unit

57.2 Hand crank coupling

58 Operations counter

59.4 Heater (-R01), condensation water protection (optional)

59.6 Resistor (-R1) for undervoltage release (-Y7), (optional)

Description

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Fig. 18 Open operating mechanism

31 Auxiliary switch (-S1)

32 Low-voltage plug connector (-X0), (optional)

33.1 Connector strip (-X1.2 and -X1.4), 20-pole

33.2 Plugs (-X01) and (-X02) for withdrawable part (optional)

33.3 Plug (-X1) only when ordering the 20-pole connector strip

34 Auxiliary contactor (-K1), shutdown (-Y9) and anti-pumping

device

51.1 First shunt release (-Y1)

51.2 2nd release (optional)

51.3 3rd release (optional)

52 Closing solenoid (-Y9)

53 Motor (-M1), charging the closing spring

54.1 Position switch (-S12), prevents electrical closing in

mechanical interlock (not shown)

54.2 Position switch (-S21), motor control

54.3 Position switch (-S3), control for (-K1)

54.4 Position switch (-S4), message “Closing spring charged”

54.5 Position switch (-S5), electrical closing lock-out or key-

operated interlock (optional)

54.6 Position switch (-S6), circuit-breaker tripping signal

(optional, not shown)

55 Closing spring

55.1 Spring state indicator

56.3 Position indicator CLOSED-OPEN

57 Gear unit

57.2 Hand crank coupling

58 Operations counter

59.3 Key-operated interlock (optional)

59.4 Heater (-R01), condensation water protection (optional)

59.5 Electrical closing lock-out (-F1), (optional, not shown)

59.6 Resistor (-R1), in dependence on voltage 1 or 2 resistors,

for undervoltage release (-Y7), (optional)

Description

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Equipment

Basic equipment The basic equipment of the vacuum circuit-breaker SION® contains the following:

Additional equipment The vacuum circuit-breaker SION® (not for all designs) can also be fitted with the

following equipment:

In addition to the serial shunt release (Y1), the vacuum circuit-breaker can be

equipped with no more than one release of type 3AX11…. For the permitted possi-

ble combinations of the additional equipment as well as special designs, refer to cat-

alogue HG11 or contact the relevant Siemens representative.

Motor 3AY1411, for charging the closing spring (-M1)

Position switch 3AX4206-0A, for motor control (-S21)

Anti-pumping device

• electrical 3AY1420 (-K1)

• mechanical

Position switch 3AX4206-0A, control of the anti-pumping device

(-K1)

(-S3)

Closing solenoid 3AX1410 (-Y9)

Shunt release 3AX1410 (-Y1)

Auxiliary switch optional (-S1)

• 6NO + 6NC (3SV9273)

• 12NO + 12NC (3SV9274)

Position switch 3AX4206-0A, for signal “Closing spring charged” (-S4)

Low-voltage interface 3AX1134 optional (-X0)

• Plug connector with sleeve housing 64-pole

• Plug connector with sleeve housing 24-pole

• Connector strip 20-pole (-X1.1 to -X1.4)

• Plug, Faston flat connector (only with 20-pole connector strip) (-X1)

Operations counter

Mechanical manual closing and opening

Shunt release 3AX1101 (-Y2)

Current transformer (c.t.) operated release 3AX1102 (-Y4, -Y5)

C.t.-operated release 3AX1104 (0.1 Ws) (-Y6)

Undervoltage release 3AX1103 (-Y7)

• with resistor for undervoltage release (-Y7) (-R1)

Heater (condensation water protection) (-R01)

Electrical closing lock-out 3AX1405 (-F1)

• with position switch, electrical closing lock-out (-S5)

Circuit-breaker tripping signal 3AX4206-0A (-S6)

Mechanical interlock 3AX1420 for withdrawable part

Position switch 3AX4206-0A, prevents electrical closing if there is a

mechanical interlock

(-S12)

Key-operated interlock 3AX1437, with position switch

IP plate 3AX1456

PG fitting 3AX1458

Shaft cover 3AX1466

Description

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Motor (-M1)

Fig. 20 Power consumption of motor

Fig. 21 Recommendation for motor protection device

*) The operator's supply voltage is permitted to deviate from the rated supply voltage of the vac-

uum circuit-breaker by -15 % to +10 %.

**) Built-in automatic circuit-breaker with C characteristic

1) 50/60 Hz.

2) ± 50 W VA (empirically determined values)

After the supply voltage is applied and if the closing

spring is discharged, the motor starts immediately and is

automatically deactivated internally after charging has

taken place. For power consumption see table Fig. 20.

In the short charging time, the motor operates in the

overload range. See Fig. 21 for the rated current for the

required motor short-circuit protection.

Note

The motor protection devices are not included in the de-

livery of the vacuum circuit-breaker and must be ordered

separately.

Fig. 19 Motor (53)

Rated supply voltage U*) DC AC1)

V 24 48 60 110 220 110 230

3AE52) W/VA 90 100 90 100 130 350

DC AC1)

Rated supply voltage U*) V 24 48 60 110 220 110 230

Rated current of the protective

device I**)A 5 2 1.6 1 0.5 1 1.5

Description

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Auxiliary contactor (-K1)

Closing solenoid (-Y9)

If simultaneous electrical CLOSE and OPEN commands

are continuously applied to the vacuum circuit-breaker, it

returns to the open position after being closed.

The function of the auxiliary contactor (-K1) causes the

vacuum circuit-breaker to pause at this point until the

CLOSE command is given again.

This prevents continuous closing and opening (pump-

ing).

Fig. 22 Auxiliary contactor (34)

The closing solenoid (-Y9) unlatches the charged closing

spring and closes the vacuum circuit-breaker electrically.

It is available for DC or AC voltage.

The closing solenoid (-Y9) is not designed for continuous

operation and is terminated within the circuit-breaker via

the auxiliary switch (-S1) at the factory.

The operator's supply voltage is permitted to deviate

from the rated supply voltage of the vacuum circuit-

breaker by -15 % to +10 %.

The closing solenoid (-Y9) is protected against overvolt-

age ≥60 V.

Power consumption

300 to 370 W / VA (3AY1410)

Fig. 23 Closing solenoid (52)

Description

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First shunt release (-Y1)

Position switch 3AX4206-0A

In the case of the first shunt release (-Y1), the electrical-

ly fed tripping pulse is passed to the "OPEN" latch by

means of a directly acting magnet armature, thus open-

ing the vacuum circuit-breaker.

The first shunt release (-Y1) is not designed for continu-

ous operation and is terminated within the circuit-breaker

via the auxiliary switch (-S1) at the factory.

The operator's supply voltage may deviate from the rat-

ed supply voltage of the vacuum circuit-breaker by -30 %

to +10 % in the event of DC voltage and by -15 % to

+10 % in the event of AC voltage.

The first shunt release (-Y1) is protected against over-

voltage ≥60 V.

Power consumption

300 W / VA (3AY1410)

Fig. 24 First shunt release (51.1)

Position switch (-S21) switches the motor off after charg-

ing the closing spring.

Position switches (-S3) and (-S4) open when the closing

spring is charged.

Position switch(-S3), indication of tensed spring

Position switch (-S4), control for auxiliary contactor K1

Fig. 25 Position switch (54.2-4)

Description

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Auxiliary switch (-S1)

Power consumption

Breaking capacity

Auxiliary switch (-S1) is available for delivery in two ver-

sions: With 6 normally open contacts or 12 normally

closed contacts each. Contacts available on the custom-

er's premises - see circuit diagram supplied.

Fig. 26 Auxiliary switch (31)

Rated insulation voltage: 250 V AC/DC

Insulation group: C as per VDE 0110

Continuous current: 10 A

Closing capacity: 50 A

Rated operating voltage Rated normal current

up to U (V) I (A)

Ohmic

load

Inductive load

(T = 20 ms)

230 AC 10 10

24 DC 10 10

48 DC 10 9

60 DC 9 7

110 DC 5 4

220 DC 2.5 2

Description

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Circuit-breaker tripping signal (-S6) 3AX4206-0A

A further shunt release, current transformer-operated release or undervoltage re-

lease can be installed as a second or third release.

2nd shunt release 3AX1101

The second shunt release (-Y2) is installed whenever more than one shunt release

is needed.

In this version, the electrical “open” command is passed by means of a magnet ar-

mature to the “OPEN” latch by release of an energy storage mechanism, thus open-

ing the vacuum circuit-breaker. This opening solenoid is not designed for continuous

operation. Necessary varistors and rectifiers are integrated in the release.

Power consumption 10 W / VA

The position switch (-S6) makes contact briefly when the

vacuum circuit-breaker is opened by means of an elec-

trical release.

This contact can be used for a signal.

Fig. 27 Circuit-breaker tripping signal (54.6)

Fig. 28 Second shunt release (51.2) Fig. 29 Second shunt release (51.2)

Description

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C.t.-operated release (-Y4), (-Y5) 3AX1102, (-Y6) 3AX1104

The c.t.-operated releases (-Y4), (-Y5) or (-Y6) consist of an energy store, an un-

latching fixture and an electromagnetic system. If the tripping current is exceeded

(90 % of the transformer-operated release's rated current), the stored energy mech-

anism is unlatched, thus initiating opening of the vacuum circuit-breaker.

For use of the current transformer-operated releases, auxiliary transformers are also

needed for matching, in addition to the main current transformers.

Power consumption for 0.5 A and 1 A ≤6VA at ≤90 % of the current transformer-

operated release's rated current and with open armature.

Power consumption 10 W / VA

Fig. 30 C.t.-operated release (51.3) Fig. 31 C.t.-operated release (51.3)

Description

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Undervoltage release (-Y7) 3AX1103

The undervoltage release (-Y7) has an electromagnet system that is always live

when the vacuum circuit-breaker is in the closed state. If the voltage drops below a

certain value, the undervoltage release (-Y7) is unlatched, thus initiating opening of

the vacuum circuit-breaker via the energy storage mechanism.

Random tripping of the undervoltage release (-Y7) is generally performed by a nor-

mally closed contact in the tripping circuit, but can also be done with the aid of a nor-

mally open contact by short-circuiting the solenoid coil. If this release method is

used, the solenoid coil's short-circuit current is limited by the built-in resistor.

The undervoltage release (-Y7) can also be connected to voltage transformers.

The undervoltage release (-Y7) automatically trips the vacuum circuit-breaker if the

rated supply voltage drops to an inadmissible value. Any necessary varistors and

rectifiers are integrated in the release.

Power consumption 20 W / VA

Note

The undervoltage release (-Y7) may only be operated with the supplied series re-

sistor (-R1).

Note

For circuits (mechanical or electrical), the undervoltage release 3AX1103… must

be connected to control voltage, as otherwise a switch-on is not possible (see

“Removing the transport block from the undervoltage release”, page 48).

Fig. 32 Undervoltage release (51.7), in dependence

on voltage 1 or 2 resistors

Fig. 33 Typical circuit for connection of the undervolt-

age release (-Y7)

(-R1) Resistor

(-S1) Auxiliary switch

(-Y7) Undervoltage

release

Description

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Heater (-R01) for condensation water protection (optional)

The surface temperature of the heating is approx. 180 °C.

Power consumption 50 W, rated voltage 230 V AC, optionally 110 V AC

The heater limits condensation and corrosion of the vac-

uum circuit-breaker.

To this end, the heater has to be connected to the supply

voltage (see circuit diagram included with the delivery).

Fig. 34 Example - heating (59.4)

WARNING

Risk of burns!

Touching the hot heater will cause burns.

Do not touch the heater before it has cooled off.

Description

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Interlocks

To lock vacuum circuit-breakers as a function of the switch position, the spring

charge mechanisms of the vacuum circuit-breaker can be equipped with an inter-

lock. This also applies to vacuum circuit-breakers on switchgear trucks, in withdraw-

able sections or with disconnectors.

Conditions The vacuum circuit-breaker must only be closed in operating or disconnected posi-

tion. The operating or disconnected position is the position of the vacuum circuit-

breaker on the switchgear truck or withdrawable section in the switchgear. At the

same time, the vacuum circuit-breaker may be moved on the switchgear truck or

withdrawable section only when it is open.

Positions of the vacuum circuit-breaker in the switchgear

Disconnected position The isolating distance between the vacuum circuit-breaker contacts and the switch-

gear counter-contacts is attained 100 %.

Operating position The circuit-breaker is inserted fully into the switchgear and the vacuum circuit-break-

er contacts overlap completely with the switchgear counter-contacts.

Mechanical interlock (optional)

A sensing and actuation component (b) on the system side detects the operating po-

sition (CLOSED/OPEN) of the vacuum circuit-breaker.

CLOSED switch position If the vacuum circuit-breaker is closed, actuation of the system's sensing and actu-

ation component (b) is prevented. A mechanical system in the switchgear truck or

withdrawable section reliably blocks movements of the circuit-breaker on the switch-

gear truck or withdrawable section.

OPEN switch position If the vacuum circuit-breaker is open, the sensing and actuation component (b) on

the system side actuates, via the stroke (a), the vacuum circuit-breaker's mechani-

cal interlock and reliably blocks closing of the vacuum circuit-breaker.

WARNING

Risk of crushing!

Mechanical parts can move quickly, even if they are remote-controlled. Contact

with mechanical parts or parts under spring charge can lead to crushing of body

parts.

• Do not reach into openings.

• Do not touch pole assemblies or circuit-breaker shaft.

• Secure the vacuum circuit-breaker from opening during adjustment work in

the CLOSED switch position.

Description

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a Stroke in the OPEN switch position (min. 5 mm, max. 10 mm)

b Sensing or actuation component (cross-section max. 14 mm x 3 mm, actuation force min. 50 N,

max. 450 N)

c + d See dimension drawing

e CLOSED switch position spacing

X-X Sectional view

Z View from below

The installation dimensions (c+d) for the sensing or actuation component (b) are in-

cluded in the dimension drawing supplied.

Fig. 35 Mechanical interlock

35 ±0.3 mm

Description

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Key-operated interlock 3AX1437 (optional)

Electrical closing lock-out (-F1) 3AX1415 (optional)

If the vacuum circuit-breaker is equipped with a key-op-

erated interlock, it is possible to mechanically prevent

both manual closing and electrical closing (position

switch -S5).

To lock the vacuum circuit-breaker, press and hold the

OPEN pushbutton until the key is turned to the CLOSED

position (vertical).

The key can be pulled out in the locked position.

Note: In the as-delivered condition, the vacuum circuit-

breaker is locked with the key-operated interlock and

must be unlocked for test switching operations and com-

missioning.

Fig. 36 Key-operated interlock (59.3)

Closing of the vacuum circuit-breaker can be prevented

with the electrical closing lockout (-F1).

The electrical closing lock-out (-F1) enables operation of

the vacuum circuit-breaker if auxiliary voltage is availa-

ble and mechanically locks both manual closing and

electrical closing if auxiliary voltage is not available (po-

sition switch -S5).

Note: For mechanical or electrical circuits the electrical

closing lock-out 3AX1415 must be connected to the con-

trol voltage, otherwise no closing is possible.

Fig. 37 Electrical closing lock-out (59.5)

Description

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Rating plate

Technical data

Fig. 39 Technical data (excerpt from the catalogue)

Dimensions and weights

The dimensions of the vacuum circuit-breaker can be taken from the relevant dimen-

sion drawing. If needed, they can be obtained from your Siemens representative.

The weight is indicated on the vacuum circuit-breaker rating plate (see Fig. 38) or

refer to the associated dimensional drawing.

Fig. 38 Example - rating plate

1 Manufacturer

2 Year of manufacture

3 Rated normal current Ir

4 Rated duration of short circuit tk

5Weight m

6 Rated operating sequence

7 Classification as per standard

8 Rated power frequency withstand voltage Ud

9 Rated lightning impulse withstand

voltage Up

10 Rated short-circuit breaking current Isc

11 Rated voltage Ur

11 Rated frequency fr

12 Factory number

13 Type designation

14 Quality control seal

Made in Germany

600806

Kontr

0001-II-10_de

8/9

Type 3AE50123-2

No. S 3AE50123-2 Year of manufacture 2017

Rated operating sequence: O - 0.3 s - CO - 3 min - CO

Class as per IEC 62271-100 E2, C2, M2

Ur 17.5 kV 50/60 Hz

Isc 31.5 kA

Ud/Up 42/95 kV

Ir 1250 A

tk3 s

m80 kg

Rated voltage* UrkV 7.2 12 17.5 24

Rated normal current IrA 800 - 2500*** 800

Rated lightning impulse withstand voltage (peak value) UpkV 60 75 (95**) 95 125

Rated power frequency withstand voltage (effective value) UdkV 20 (32**) 28 (42**) 38 50 (65**)

Rated short-circuit breaking current Isc kA 16 - 31.5 16 - 25

Distance between pole centres mm 150, 160, 210, 275 210, 275

Distance between lower and the upper terminal mm 205, 275, 310 310

Rated operating sequence A, B, C A, B, C

A O - 3 min - CO - 3 min - CO

B O - 0.3 s - CO - 3 min - CO; standard rated operating sequence

C O - 0.3 s - CO - 15 s - CO

* In the event of a rated frequency fr of 50/60 Hz

** On request

*** From 2000 A upwards only with 310 mm space between the lower and the upper terminal

and a distance between pole centres of 210/275 mm

Description

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Ambient conditions

Installation altitudes

Dielectric strength The dielectric strength of insulation in air declines with rising altitude due to the lower

air density. As per IEC 62271-1, the rated lightning impulse voltage values given in

Fig. 39 are valid up to an installation altitude of 1000 m above sea level.

Above an altitude of 1000 m, the insulation level must be corrected as shown in

Fig. 41:

Occasional condensation may occur under these ambi-

ent conditions.

Vacuum circuit-breakers SION® are suitable for use in

the following climate classes according to IEC 60721,

part 3-3:

Class

• Climatic ambient conditions: 3K41)

• Biological ambient conditions: 3B1

• Mechanical ambient conditions: 3M2

• Chemically active substances: 3C22)

• Mechanically active substances: 3S23)

1) Minimum temperature limit: -5 °C (with addition A40 to -25 °C)

2) Without occurrence of salt fog and simultaneous condensation

3) Restriction: Clean insulation parts

4) Average value, measured over 24 hours

5) Average value, measured over 1 month

Fig. 40 Ambient conditions

U ≥U0 • Ka

U Rated withstand voltage U under standard reference

atmosphere

U0Required rated withstand voltage for the installation

location

KaAltitude correction factor

Ka = em • (H - 1000)/8150

Calculating the altitude correction factor Ka:

H = site altitude in metres

m = 1 for AC voltage, lightning impulse withstand volt-

age (between phases, phase-ground, applied lon-

gitudinally)

Example

For a required rated withstand voltage of 75 kV at an al-

titude of 2500 m, an insulation level of at least 90 kV un-

der standard reference atmosphere conditions is

required:

90 kV ≥75 kV • e1 • (2500 - 1000)/8150

≈ 75 kV • 1.2

Fig. 41 Altitude correction factor Ka

Description

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Operating times

Fig. 42 Switching times

Closing time = period between starting (command) of the closing movement and

the moment of contact touch in all poles.

Opening time = period between starting (command) of the opening movement and

opening of the last pole.

Arcing time = period from the start of the first arc to extinction of the arcs in all poles.

Break time = period between starting (command) of the opening movement and ex-

tinction of the arc in the pole extinct last (= opening time + arcing time).

Close/Open time = period in an OPEN/CLOSE cycle between the moment of con-

tact touch in the first pole during closing and the time when contact touch has been

cancelled in all poles during subsequent opening.

Dead time = period from the end of the current flow in all poles up to the start of the

current flow in the first pole.

Closing time < 60 ms

Opening time

First shunt release (-Y1) < 45 ms

Second/third release (-Y2, -Y3, -Y4, -Y5, -Y6, -Y7) < 45 ms

Arcing time < 15 ms

Break time

First shunt release (-Y1) < 75 ms

Second/third release (-Y2, -Y3, -Y4, -Y5, -Y6, -Y7) < 60 ms

Dead time 300 ms

Close/Open time

First shunt release (-Y1) < 75 ms

Second/third release (-Y2, -Y3, -Y4, -Y5, -Y6, -Y7) < 60 ms

Minimum command duration

Closing solenoid (-Y9) 45 ms

First shunt release (-Y1) 40 ms

Second/third release (-Y2, -Y3, -Y4, -Y5, -Y6, -Y7) 20 ms

Shortest pulse time for circuit-breaker tripping signal (S6)

First shunt release (-Y1) > 10 ms

Second/third release (-Y2, -Y3, -Y4, -Y5, -Y6, -Y7) > 6 ms

Charging time if actuated electrically (-M1) < 15 s

Synchronous operation error between the poles ≤ 2 ms

Description

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Circuit diagrams

The circuit diagrams show deliverable components with their wiring options.

The circuit diagrams for the vacuum circuit-breaker are compiled depending on your

order.

Mechanical manual closing and electrical closing

Fig. 43 Sample circuit diagram 64-pole plug connector (part 1) of the vacuum cir-

cuit-breaker

-Y1 -Y2

-Y4, -Y5

-Y6

-Y7

“OPEN” release

Extended auxiliary switch

-F1 Electrical closing lock-out (optional, only)

HA Manual opening

HE Manual closing

-K1 Auxiliary contactor (anti-pumping device)

-M1 Motor

P Energy storage mechanism

-R1 Resistor

-S1 Auxiliary switch

-S12 Position switch (prevents electrical switching if there is

a mechanical interlock)

-S21 Position switch (switches off the motor after charging)

-S3 Position switch (opens when closing spring is charged)

-S4 Position switch (“Closing spring charged” signal)

-S6 Position switch (for circuit-breaker tripping signal)

-X0 Low-voltage interface

-Y1 First shunt release

-Y2 Second shunt release

-Y4 Current transformer-operated release

-Y5, -Y7 Current transformer-operated release

-Y6 Current transformer-operated release

-Y7 Undervoltage release

-Y9 Closing solenoid

Description

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The unassigned auxiliary switch terminals are wired up with the 64-pole plug bottom

as shown.

Fig. 44 Example - auxiliary switch terminals

Fig. 45 Sample switching operation for connection of the undervoltage release

(-Y7)

9862-75

Normal auxiliary switch Extended auxiliary switch

No wiring required if

a) Second shunt release (-Y2) available

b) Undervoltage release (-Y7) available

a) b)

9862-74

System wiring Tripping via NO con-

tact

Tripping via

NC contact

System wiring

Circuit-breaker wiring

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Mounting

DANGER

High-voltage - danger to life

Touching live parts causes an electric shock.

• Do not touch live parts!

• When work is performed on the switchgear, the switchgear must be de-ener-

gized and earthed!

• The work described in the following sections must only be performed when

the switchgear has been de-energised:

- Take safety measures to prevent it from being switched back on!

- Observe industrial safety regulations!

- Ensure that the vacuum circuit-breaker is mounted and commissioned

only by qualified personnel who are familiar with the operating instructions

and observe the warning notices.

WARNING

Risk of injury due to wrong transport means!

The use of incorrect transport means can lead to the vacuum circuit-breaker fall-

ing and cause injury to persons.

• Observe weight.

• Use means of transport suited to the requirements and load-carrying capac-

ity.

• The vacuum circuit-breaker must not fall over.

• Sharp edges may cause injury.

WARNING

Risk of burns!

Touching the hot heater will cause burns.

Do not touch the heater before it has cooled off.

CAUTION

Risk of crushing from rotating and spring-loaded parts

Rotating and spring-loaded parts can move quickly in the event of manual release

or remote tripping of the vacuum circuit-breaker. Limbs can be crushed if they

come into contact with rotating and spring-loaded parts.

Avoid touching openly accessible rotating and spring-loaded parts such as drive

shafts. Optionally, shaft covers for covering and protecting against touching the

exposed circuit-breaker shaft available and can be mounted (see Chapter

“Mounting the shaft covers”, p. 44).

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Fixing in the switching cubicle

The vacuum circuit-breaker is delivered in the OPEN switch position and with the

closing spring discharged. Before installing the vacuum circuit-breaker remove the

transport aids (see“Unpacking” on page 6).

Checking specifications Before mounting the vacuum circuit-breaker in a switching cubicle, check the details

on the rating plate (see “Rating plate” on page 30) in order to avoid confusion.

Installation position The vacuum circuit-breaker SION® can only be installed perpendicular (to the vac-

uum interrupters) as a withdrawable part and as an indoor fixed mounting.

Note

For preliminary work, the vacuum circuit-breaker must be

• secured against falling over,

• placed onto a suitable base or

• prepared for installation while suspended from a crane.

Note

Material damage due to incorrect operation!

If the vacuum circuit-breaker SION® is triggered manually with the cover removed

and the mechanical interlock actuated, the operating mechanism of the vacuum

circuit-breaker will be irreversibly damaged. Any warranty claims are lost in the

event of such incorrect operation.

Use suitable means to prevent the vacuum circuit-breaker SION® from closing if

the cover has been removed and the mechanical interlock has been actuated.

Fig. 46 Installation position

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Removing and mounting the covers

Remove the covers to mount the fixing lugs.

Removing and mounting the cover

Removing • Pull off both the engaging hooks of the cover (20.1) simultaneously.

• Swing cover (20.1) forward and then remove to the front and top.

Mounting • Insert the cover (20.1) into the guide from the top (do not jam) and swing it

down.

• Let both engaging hooks of the cover (20.1) fully engage.

Fig. 47 Removing the cover Fig. 48 Mounting the cover

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Removing and mounting the cover

Removing • Loosen both upper M6 hexagonal bolts but do not unscrew them.

• Unscrew the bottom four M6 hexagonal bolts with the contact washers.

• Lift the cover slightly upwards and remove.

Mounting • Position the openings of the cover over the upper hexagonal bolts and the con-

tact washers and hook in the cover.

• Put contact washers on the hexagonal bolts with the gearing facing the cover

and screw M6 hexagonal bolts in with a tightening torque of 12 ±1.2 Nm.

Fig. 49 Removing the cover Fig. 50 Mounting the cover

4±0.4Nm

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Mounting the PG fitting

The version with a connector strip (without low-voltage plug) is supplied with a PG

fitting and fasteners (in the accessories pack). The PG fitting serves to bundle and

protect the cables coming from the low-voltage interface.

Note

Self-tapping screws are suitable for single use only.

Fit the retaining plate of the PG fitting with the self-tap-

ping screws (Torx screwdriver, size 20) and a tightening

torque of 3 ±0.3 Nm.

Wiring of connector strip, see page 46.

Fig. 51 Example - mounting the PG fitting

3±0.3Nm

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Mounting the system-side separating shells

System-side separating shells (47) can be used to insulate the individual poles from

each other if there is restricted terminal space.

When using system-side separating shells (47), you can use main conductors with

a max. diameter or cross-section of 60 mm.

• Slide separating shells (47) onto previously mounted threaded rods of main con-

ductors (connecting the main conductors, see “Connecting the main conductor”

page 50).

• Place separating shell (47) onto the pole shell (46) and engage into the guide.

• Engage the hooks by hand if necessary.

• Place upper separating shell (47) at a slight angle from above onto the rib

(arrow A) and press against the pole shell (46) until it engages audibly.

• Press lower separating shell (47) horizontally against the pole shell (46) until it

engages audibly.

Fig. 52 Up to 17.5 kV, mounting separating shells Fig. 53 Up to 17.5 kV, engaging separating shells

Fig. 54 24 kV, mounting separating shells Fig. 55 24 kV, engaging separating shells

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• Place separating shell (47) onto the rib (arrow a) from the top at a slight angle.

• Push the bottom part of the separating shell (47) against the pole shell (46) until

it engages audibly.

• Check whether the engaging hooks of the separating shell (47) have fully

engaged behind the insulation ribs. Engage the hooks by hand if necessary.

Mounting the fixed-mounted circuit-breaker on a horizontal plane

There are a total of 4 mounting holes on the base plate for the various installation

types.

Use M10 screws – strength class 8.8 – for fixing. The binding dimension drawings

are relevant.

Fixing on the mounting

surface

Use 4 M10 screws and washers to screw the fixed-mounted circuit-breaker onto the

mounting surface from below. Tightening torque 48 ±4 Nm (applies to greased

Fig. 56 Mounting separating shells Fig. 57 Engaging separating shells

Fig. 58 Mounting for fixed-mounted circuit-breaker

from below

Fig. 59 Mounting for fixed-mounted circuit-breaker

from below

48 ±4 Nm

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threads only).

Fixing to the withdrawable

part

For fixing to the withdrawable part, remove the cover prior to mounting (see “Remov-

ing and mounting the covers”, page 37) and fix the cable harness in the operating

mechanism (see “Connecting the low voltage”, page 46).

Mounting of the fixed-mounted circuit-breaker on a vertical plane (using fixing

straps)

The framework or the frame must be made to suit the service conditions and have

sufficient load bearing capacity and stability.

• Remove the fixing elements from the accessory pack and mount them as shown

in the installation drawing. Tightening torque 24 ±2 Nm.

• Installation of the vacuum circuit-breaker on a vertical plane.

Fig. 60 Example with withdrawable part

Fig. 61 Mounting the fixing straps Fig. 62 Mounting the fixing straps

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Mounting the IP plate (optional)

The IP plate (internal arc protection plate) is a protective plate that separates the

high-voltage area from the drive area and provides additional protection in the event

of a fault arc.

The IP plate can also be mounted for vacuum circuit-breakers with withdrawable

parts.

• Cover remains mounted.

• Take the fixing elements out of the accessories pack and mount the IP plates on

both sides as shown in the installation drawing.

• Guide continuous IP plate between pole shell and operating mechanism box

and fix to the operating mechanism box.

• Tightening torque 24 ±2 Nm.

Note

The IP plates are classed as accessories.

Whether mounting is possible depends on the version of the switching device.

You can ask the manufacturer if mounting is possible.

When the IP plate has been mounted, it prevents access to the system side and

prevents injuries.

Fig. 63 Installing a continuous IP plate (optional) Fig. 64 Mounting IP plates on both sides (optional,

only for 31.5 kA and distance between pole

centres 150/160 mm)

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Mounting the shaft covers

Note

The shaft covers are classed as accessories.

Whether mounting is possible depends on the version of the switching device.

You can ask the manufacturer if mounting is possible.

A mounted shaft cover prevents access to open moving parts and prevents inju-

ries.

A shaft cover can be mounted on both sides to cover and

prevent contact with the circuit-breaker shaft.

• Insert expansion rivet in shaft cover (step 1).

• Mount shaft cover with the fastening elements and

the self-tapping screws (Torx, T20) to the vacuum

circuit-breaker (step 2). Tightening torque 5 ±1 Nm.

Fig. 65 Mounting the shaft cover

(optional)

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Earthing

Connecting to earthing Connect the vacuum circuit-breaker on the earthing terminal (70) to the high-voltage

protective earthing as specified (DIN EN 50341).

Note

If the vacuum circuit-breaker SION® is installed into an earthed metal framework

and is connected permanently and electrically conductive, no separate earthing

is required.

Place serrated washers under the screw heads when fixing the vacuum circuit-

breaker in this case.

Fig. 66 Connecting the earthing conductor Fig. 67 Connecting the earthing conductor

105 Nm

• Select the cross-section of the earthing conductor so

that a current of 30 A, with a maximum voltage drop

of 3 V, can be conducted to the provided earthing

point (see IEC 62271-200).

• Remove hexagonal bolt M12 with washers from the

supplementary equipment or, if mounted, completely

unscrew from the earthing terminal (70).

• Observe the order of the fixing elements: Place the

washer, cable lug of earthing conductor and contact

washer (SN 70093) with the teeth facing the operat-

ing mechanism box under the bolt head. Fix M12

hexagonal bolt with the fixing elements to the earth-

ing terminal (70) with 105 Nm.

Fig. 68 Connect earthing conductor (only 31.5 kA and

distance between pole centres 150/160 mm)

105 Nm

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Connecting the low voltage

Connect the low-voltage connecting cables in the customer's switchgear in such a

way that safe operation as per the supplied circuit diagram is guaranteed.

Low-voltage interface (-X0), 64-pole 3AX1134

Wiring of connector strip with PG fitting

For connection of the control line, the standard version

of the vacuum circuit-breakers is equipped with a

64-pole low-voltage interface (-X0).

The 64-pole plug for the external terminal is suitable for

crimp termination of control and signalling lines with a

cross-section of 1.5 mm2 to 2.5 mm2.

Fig. 69 Low-voltage interface (-X0) (32)

• Remove cover (see “Removing and mounting the

covers” page 37).

• Insert flat-head screwdriver (size 0.5 mm x 3 mm)

into the plug.

• Insulation-stripped connection wire (or with wire end

ferrule) with a cross-section

- Single-core from 1.5 mm2 to 2.5 mm2

- Insert finely stranded core from 1.5 mm2 to

2.5 mm2

• Remove flat-head screwdriver.

Fig. 70 Wiring the 20-pole connector strip (33.1)

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Connecting the low-voltage for the withdrawable part

Laying the cable harness

(see Fig. 72)

• Feed the cable harness of the withdrawable part with the plugs (-Q0) along the

side wall through the vacuum circuit-breaker.

• Fix the cable harness to the present cable harness using cable straps and

ensure there is sufficient distance from the spring state indicator.

Laying the cable harness

(see Fig. 73)

• Feed the cable harness of the withdrawable part with the plugs (-Q0) through

the vacuum circuit-breaker.

• Fix the cable harness to the right side wall with cable straps.

-M1

-Y1

-Y2/-Y4/-Y6/-Y7*

-Y7*

-S4

-S6*

Internally wired

-Y9 Reference potential “Close”

Internally wired

Heater*

* only if ordered

Connecting the control lines for

20-pole connector strip

-X1

CLOSED signal potential (-Y9; 24 V to

240 V) (customer Faston crimp recepta-

cle with insulating sleeve in the accessory

pack)

-X1.3, -X1.4

Each as 10-pole plug (customer plug for

-X1.3 and -X1.4 in the accessory pack)

Note: Terminal 5 of (-X1.4) reference po-

tential of the CLOSED signal (-Y9; 24 V

to 240 V)

Fig. 71 Wiring the connector strip (-X1.3) and (-X1.4) at the customer site

Fig. 72 Laying the cable harness Fig. 73 Laying the cable harness

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Mounting the plug • Insert the plug bottom (-Q0) into the frame as far as it will go and let it engage.

• Wire the plug (-Q1) and insert it (see “Wiring of connector strip with PG fitting”

page 46).

Removing the transport block from the undervoltage release

Undervoltage release (-Y7)

available?

The vacuum circuit-breaker with an undervoltage release (-Y7) 3AX1103 is supplied

with a transport securing device.

Fig. 74 Mounting the plug for the withdrawable part Fig. 75 Mounting the plug for the withdrawable part

• Remove the cover (see “Removing and mounting

the covers” page 37).

• Shift the locking screw of the striker from position A

to B (see the reference note in the operating mecha-

nism of the vacuum circuit-breaker).

• Mount the cover again in the reverse order (see

“Removing and mounting the covers” page 37).

Fig. 76 Removing the transport block

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Electrical connection of the main conductors

The conductor bars can be purchased from the Siemens Service Center.

Preparing contact surfaces

DANGER

High-voltage - danger to life

Checking the vacuum circuit-breaker in the panel with applied high voltage is al-

lowed only after full functionality has been determined (see “Commissioning” on

page 57).

Note

Grease the conductor bars with Vaseline prior to mounting.

Note

• Screw-in depths for screws or threaded rods and

• Impact depths for spring pins or spiral spring pins can be found in table

“Screw-in depths”, Fig. 79.

Note

Clean silver spray-plated and copper spray-plated contact areas with a cloth; do

not brush.

Different connection materials (AI/CU) must not be cleaned with the same clean-

ing tools.

Silver-plated parts must not be bolted to aluminium bars!

Fig. 77 Cleaning the connecting surfaces Fig. 78 Cleaning the connecting surfaces of the con-

ductor bars

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Carefully brush the connecting surfaces of the conductor bar cross-wise with a steel

brush until they are bright, and wipe off any residue using a clean cloth.

After cleaning, very lightly grease the bright contact surfaces with acid-free Vaseline

(e. g. Shell Vaseline 8420) and screw together immediately.

Screw-in depths in the upper and lower terminals

Fig. 79 Screw-in depths

Connecting the main conductor

Mounting conductor bars

Adjust the conductor bars in such a way that, before fixing, they lie flat easily and fit

the holes on the connecting surfaces of the upper and lower terminals.

Corresponding to the rated current strength, use M12 or M16 screws and nuts -

strength class 8.8 - and the appropriate spring elements and washers for connection

of the conductor bars.

When tightening the screws, hold the nuts against the tightening torque with a suit-

Rated voltage UrkV 7.2 - 17.5 24

Rated short-circuit breaking current Isc kA 16 - 31.5 16 - 25

Rated normal current IrA 800 - 2500 800 -

1250

Terminal thread M12

M16 (for 1600 A)

Upper terminal (A) mm 20 ±1

Lower terminal (B) mm 20 ±1,

2000 A 28 ±1 20 ±1

Note

For vacuum circuit-breakers with connecting bars, it is recommended to use the

stainless steel screws or non-magnetisable stainless steel screws included in the

accessory pack.

Fig. 80 Screw-in depths in the upper and lower termi-

nals

Fig. 81 Mounting the conductor bars (flat). Example

for 1 250 A

Mounting

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able screwdriver or socket spanner.

Tightening torque for

- M12: 40 ±4 Nm

- M16: 100 ±10 Nm

Tightening torques apply to greased threads only.

Securing with a spiral

spring pin

The conductor bars can be secured against twisting with a spiral spring pin accord-

ing to ISO 8748 or a spring pin according to ISO 8752 — 4 × X*)mm — N — C.

A drill hole Ø 4H11 must be provided in the conductor bar (see Fig 81, horizontal ar-

row).

See dimension drawings.

*) X = Length of the spring pin, depending on the cross-section of the conductor bar in mm

Mounting contact arms and systems

• Grease the screw-in section of the threaded rods with Vaseline.

• Screw in the threaded rod and observe the screw-in depths for safe use (see

Table “Screw-in depths in the upper and lower terminals”, page 50).

• Screw the threaded rods to the contact surfaces.

Tightening torque for

- M12: 40 ±4 Nm

- M16: 100 ±10 Nm

Tightening torques apply to greased threads only.

• End faces of the copper contact arms must be

- roughened, cleaned and

- greased with Vaseline.

• End faces with silver-plated contact surfaces must be

- cleaned and

- greased with Vaseline.

Fig. 82 Cleaning and mounting threaded rods (22.1)

for contact arms (22)

Fig. 83 Cleaning and mounting contact arms (22)

Mounting

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• Fit the contact arms.

• Mount separating shells (if present, see “Mounting the system-side separating

shells” page 40).

• For contact arms (at rated normal current Ir ≤1250 A) with Ø 40 mm, insert con-

tact arm adapter in contact system:

- Grease contact fingers in the contact system with Molykote Longterm 2

- On the rear of the contact system, adjust the contact arm adapter with screw,

washers and nut

- Tighten contact arm adapter in the contact system using an open-end span-

ner

- Remove screw with washers and nut.

• Grease contact systems for contact arms with Ø 60 mm (without contact arm

Fig. 84 Fitting the contact arms (22) Fig. 85 For contact arms with Ø 40 mm, inserting the

contact arm adapter (22.2) on the rear

Fig. 86 Fixing contact systems with contact arm

adapter to contact arms with Ø 40 mm

Fig. 87 Fixing contact systems to contact arms with

Ø60mm

Mounting

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2018-01-18

adapter) on one side of the inside (round outer edge) on the contact fingers with

Molykote Longterm 2.

• Fit contact system onto threaded rod and contact arm, observing position of the

contact system (round outer edge towards contact arm).

• Tighten contact system with torque spanner.

Tightening torque for

- M12: 40 ±4 Nm

- M16: 100 ±10 Nm

Tightening torques apply to greased threads only.

• Grease the other side of the contact system with Molykote Longterm 2.

Mounting the bushing and mating contact

Note

The plate must be provided by the customer (for dimensions, see dimension

drawing supplied).

Screw bushings with mating contact, each with

• 4 DIN 603 M8x25-8.8 carriage bolts with square

neck

• contact washers and

• hexagon nuts

to the plate (made of non-ferromagnetic steel) in the

switchbay or the rear of the guide frame.

Tightening torque for

- M8: 25 ±2 Nm

Tightening torques apply to greased threads only.

Fit bushing cap from the other side.

Fig. 88 Mounting a bushing with mating contact to the

guide frame or the plate

Mounting

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Inserting the vacuum circuit-breaker SION® with withdrawable

part

• Fit the vacuum circuit-breaker with withdrawable part into system-side guide

rails.

• Push the vacuum circuit-breaker with withdrawable part into the guide rails until

they hit the side stops (large arrow), moving locking handles towards the middle

of the withdrawable part (small arrows).

• After reaching the side stops, check that the locking handles have engaged

properly.

Moving the vacuum circuit-breaker SION® on the withdrawable part

Fig. 89 Example - inserting into guide rails Fig. 90 Example - inserting and locking

WARNING

Risk of crushing!

Mechanical parts can move quickly, even if they are remote-controlled.

Contact with mechanical parts or parts under spring charge can lead to crushing

of body parts.

• Do not remove covers.

• Do not reach into openings.

• Do not touch pole assemblies or circuit-breaker shaft.

Note

Material damage due to incorrect switch position!

Mechanical parts can be damaged if the switch position is not observed.

Always move the vacuum circuit-breaker on the withdrawable part in the OPEN

switch position.

Mounting

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• Insert the handle of withdrawable part 3AX1430-2C into the coupling of the with-

drawable part.

• Turn inserted withdrawable part handle 3AX1430-2C clockwise in order to move

the vacuum circuit-breaker to a perceivable end stop.

Travel path lengths (optional):

- 180, 200 and 220 mm for all vacuum circuit-breakers up to 17.5 kV and

- 260 mm for all vacuum circuit-breakers with 24 kV.

Position queries during movement

If the low-voltage interface has been connected on the customer's premises, the fol-

lowing positions of the vacuum circuit-breaker with withdrawable part are sensed

during movement:

Fig. 91 Example - moving in guide rails

Disconnected position/test position Intermediate position Entering position/service position

Switches –S1.5; –S1.6; –S1.7; –S1.8

send a signal or message

No signal Switches –S1.0; –S1.1; –S1.2; –S1.3

send a signal or message

For stabilisation purposes, a further locking bar is provid-

ed on the withdrawable part, which is automatically ex-

tended downwards by the handle of withdrawable part

3AX1430-2C during insertion.

For the size of the locking bar, refer to the dimension

drawing supplied.

Fig. 92 Locking bar on withdrawable part

Mounting

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Blank page

Operation

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Operation

Commissioning

Before commissioning, check the following points to ensure that the vacuum circuit-

breaker is functioning faultlessly at operating temperature:

DANGER

High voltage - danger to life!

Touching live parts causes an electric shock.

• Do not touch live parts!

• Ensure that the vacuum circuit-breaker is operated only by qualified person-

nel who are familiar with the operating instructions and who observe the

warning notices.

• Check through all of the items on the checklist and ensure correct functioning

before commissioning!

CAUTION

Increased noise levels due to switching noise

Temporary noise levels above 85 dB (A) can cause damage to health.

Wear suitable ear protection.

Checklist Notes

Does the information on the rating plate (see page 30) match the order

data?

Ensure correct operating voltage.

If necessary, clean the vacuum circuit-breaker (details on this in section

“Cleaning” on page 61).

Check that screw connections are tightened securely.

Check the plug connection of the connector strip for firm seat.

If necessary, check and adjust the customer's devices.

If there is a closing lock: Is closing unlocked accordingly?

Test switching without supply voltage

Charge the closing spring with the hand crank (see Fig. 94), then press

the CLOSE pushbutton and, once closing has been performed, press the

OPEN pushbutton.

Test switching with supply voltage

To perform test switching with the motor, switch on the supply voltage.

The motor starts up immediately and charges the closing spring. Check

the indicator for the charge state of the closing spring (mechanically and

electrically).

Electrically check through auxiliary switch S1 and position switch in both

end positions – operate the vacuum circuit-breaker to do so.

Operation

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Position indicator and spring state indicator when charging the closing

spring, closing and opening

* Spring only charged if motor voltage is applied

Fig. 93 Operating element indicators

First closing operation

If all functions have been checked and are OK, switch on the high voltage while ob-

serving all of the safety regulations and operational requirements.

Check functioning of the closing solenoid Y9 and all available shunt

releases by operating them electrically.

If there is a 3AX1103 undervoltage release (Y7): Has the locking screw of

the striker been shifted from position A to B (see “Removing the transport

block from the undervoltage release” on page 48)?

If there are interlocks and a retrofitted key-operated interlock: Check if the

function of the interlocks as per IEC 62271-200 is guaranteed.

WARNING

Do not commission the vacuum circuit-breaker if there are malfunctions.

If the malfunctions or the damage cannot be remedied, contact a sales represent-

ative or Siemens Service and, if necessary, send back the vacuum circuit-break-

er.

Input Position indicator Spring state indicator

Charging

with hand crank,

with motor operat-

ing mechanism



Closing

“CLOSE” pushbut-

ton,

Remote tripping

 *

Opening

“OPEN” pushbut-

ton,

Remote tripping



Note

If an undervoltage release 3AX1103… is fitted, it must be connected to control

voltage for switching operations (mechanical or electrical), as otherwise closing

is not possible.

Operation

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Charging the closing spring

If the supply voltage is applied, the closing spring is automatically charged by the

motor.

Hand crank If the supply voltage fails, the closing spring can be charged with a hand crank.

• To do this, fit the hand crank onto the hand crank coupling through the opening

with the adapter pushed forward and

• turn clockwise until the spring state indicator changes over:

The adapter of the hand crank is designed in such a way that the hand crank be-

comes uncoupled when the motor supply voltage returns.

WARNING

Risk of injury if hand cranks other than the original hand crank are used.

When the supply voltage is present, the motor immediately recharges the spring

after a closing operation. If the hand crank does not have a slip coupling, the hand

crank will also rotate.

To avoid injuries caused by the motor starting suddenly, the vacuum circuit-

breaker must be charged only using the original hand crank.



Discharged Charged

Fig. 94 Charging the closing spring with the hand

crank

Operation

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Closing

Provided there is no lock-out due to a mechanical interlock, send the closing com-

mand via the CLOSE pushbutton or the corresponding command element until the

vacuum circuit-breaker is closed and shows and signals the CLOSED switch posi-

tion.

Change of the position indicator:

After closing and, if necessary, releasing the CLOSE pushbutton, the closing spring

is immediately automatically charged by the motor and the symbol for “Closing

spring charged” becomes visible in the spring state indicator.

Change of the spring state indicator:

Opening

The opening spring is charged during the closing operation.

To open, send the opening command via the OPEN pushbutton or the correspond-

ing command element until the vacuum circuit-breaker is open, and shows and sig-

nals the OPEN switch position.

Change of the switch position indicator after electrical opening:

The spring state indicator does not change.

Discharging the closing spring

To discharge the closing spring:

• Deactivate the supply voltage

• On the vacuum circuit-breaker, actuate the OPEN, CLOSE and OPEN pushbut-

tons manually one after the other.

This ensures that the vacuum circuit-breaker is open and the closing spring is dis-

charged.



OPEN CLOSE



Charged Discharged Charged



CLOSE OPEN

Maintenance

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Maintenance

Maintenance and servicing

Maintenance

The vacuum circuit-breaker SION® is maintenance-free under normal operating

conditions (up to rated current). We do, however, recommend you to carry out reg-

ular visual inspections. The highest permissible mechanical operating cycle number

• 10 000 maintenance-free

• 30 000 with maintenance by personnel authorised by Siemens.

Preliminary work • Prior to starting work on the vacuum circuit-breaker, observe the local safety

regulations for high-voltage devices and the "5 safety rules" as per EN 50110-1.

• Switch off the supply voltage and secure against switching back on.

• On the vacuum circuit-breaker, actuate the OPEN, CLOSE and OPEN pushbut-

tons manually one after the other. This ensures that the vacuum circuit-breaker

is open and the closing spring is discharged.

Special operating conditions

If the vacuum circuit-breaker is operated under unfavourable conditions indoors

(heavy and frequent condensation, dusty air, etc.), we recommend cleaning the in-

sulating parts and possibly the outer parts of the circuit-breaker at shorter intervals.

Cleaning

DANGER

High voltage - danger to life!

Touching live parts is fatal or causes serious physical injury.

Before beginning maintenance work, note the 5 safety rules for high-voltage

equipment specified in EN 50110-1, namely:

• Isolate from the power supply

• Secure against reclosing

• Verify safe isolation from the power supply

• Earth and short-circuit

• Cover or cordon off neighbouring live parts

WARNING

Risk of crushing!

Mechanical parts can move quickly, even if they are remote-controlled.

Contact with mechanical parts or parts under spring charge can lead to crushing

of body parts.

• Do not remove covers.

• Do not reach into openings.

• Do not touch pole assemblies or circuit-breaker shaft.

WARNING

Risk of burns!

Touching the hot heater will cause burns.

Do not touch the heater before it has cooled off.

Maintenance

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The insulating parts must be clean if their insulating capacity is to be guaranteed.

Rub the insulating parts with a moist cloth.

As a cleaning agent, use only warm water with a mild, liquid household detergent

added and leave to dry.

Joints and bearings that cannot be removed must not be washed out with a deter-

gent prior to work.

Service life of the vacuum interrupters

If switching operations occur frequently under overload or short circuit, the service

life of the vacuum interrupters may be reached prematurely.

Accessories and spare parts

Replacing spare parts To ensure that the device operates reliably, spare parts are permitted to be replaced

only by personnel trained and certified by Siemens.

Fig. 95 Accessories available for order

Always specify the vacuum circuit-breaker's type and serial no. (see “Rating plate”

on page 30) when ordering spare parts.

CAUTION

Risk of injury!

The vacuum circuit-breaker should be taken out of the switchgear or switch cab-

inet for servicing.

Separate vacuum circuit-breakers from the control feed voltage or switch it off

and disconnect the low-voltage plug or terminal connection.

Accessory/spare part Order number Comment

Operating instructions 9229 0025 176

Unpacking instructions 9229 0027 176

Hand crank 3AX1530-4B

Handle on withdrawable part 3AX1430-2C

Molykote Longterm 2 3AX1133-4L

Vaseline (contact grease SN10611)

e. g. Atlantic white, Atlantic Mineralöl-

werk GmbH

3AX1133-4A Pasty consistency, flash point 210 °C, low acid

Maintenance

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Manufacturer's product liability

The manufacturer's product liability shall be excluded if at least one of the following

criteria applies:

• Original Siemens spare parts are not used.

• Fitters carrying out replacements have not been trained and certified by Sie-

mens.

• Parts have been incorrectly mounted or adjusted.

• Adjustments are not made in accordance with Siemens specifications.

• After installation and adjustment, no final test is performed with a tester

approved by Siemens including documentation of the test results.

To keep documentation complete, it is important that measurement results are sub-

mitted to the responsible Siemens representative.

Disposal

The materials of the vacuum circuit-breaker should be recycled. Disposal of the vac-

uum circuit-breaker with minimum environmental impact is possible on the basis of

existing legal regulations.

Metal The circuit breaker's metal components can be recycled as mixed scrap, although it

is more environmentally sustainable to dismantle the unit as thoroughly as possible

into sorted scrap and residual mixed scrap.

Electronics Electronic scrap must be disposed of in accordance with applicable regulations.

Materials The vacuum circuit-breaker consists of the following materials:

• Metals

- Steel (partly phosphatised, galvanised and yellow chromated or thick layer

passivated)

- Copper (partly silver-plated)

- Aluminium (partly silver-plated)

-Brass

- Chrome

• Plastics (partly glass fibre reinforced)

- Epoxy resin, polyester resin, polyamide, polycarbonate, ABS-PC mixture

- Silicone

- Rubber

•Ceramics

•Lubricant

For more information regarding declared or restricted substances in this product,

send an email to:

• materialcompliance.ms.ehs@siemens.com

Packaging If the packaging is no longer needed, it can be fully recycled.

Hazardous substances When delivered by Siemens, the product does not contain any hazardous substanc-

es within the scope of the Hazardous Substances Ordnance applicable to the terri-

tory of the Federal Republic of Germany. For operation outside the Federal Republic

of Germany, the applicable local laws and regulations must be complied with.

Further information Contact your Siemens Service Centre if you require further information.

Service

Contact person for service work (24 h):

Global customer service • Telephone: +49 180/524 7000

• Fax: +49 180/524 2471

• On the internet at the following web address: www.siemens.com/energy-sup-

port

• By email: support.energy@siemens.com

Maintenance

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Blank page

Index
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Index
A
Accessories available for order .............................   62
Altitude correction factor .......................................   31
Ambient conditions ................................................   31
Anti-pumping device .............................................   18
Areas of application ..............................................   11
Auxiliary contactor (-K1) ........................  16–  17,   20
Auxiliary switch (-S1) ............................  16–  18,   22
B
Basic equipment ...................................................   18
Bushing .................................................................   53
C
C.t.-operated release
(-Y4) ........................................................   18,   24
(-Y5) ........................................................   18,   24
(-Y6) ........................................................   18,   24
Cable harness .......................................................   47
Circuit-breaker tripping signal (-S6) ......  16–  18,   23
Climate classes .....................................................   31
CLOSE pushbutton ...............................................   15
Closing lock-out (-F1), electrical ...................   17–  18
Closing solenoid (-Y9) ...........................  16–  18,   20
Closing spring ...............................  16–  17,   59–  60
Conductor bar .......................................................   50
Connecting bar ......................................................   50
Connecting surface, pole ......................................   50
Connector strip
(-X1.2) and (-X1.4) ..................................   16–  18
20-pole ............................................................   46
Connector strips
(-X1.3) and (-X1.4) for PG fitting .....................   47
Contact arm ..................................................   51–  52
Contact arm adapter .............................................   52
Contact system .....................................  14,   52–  53
Cover ....................................................  13–  15,   37
mounting .........................................................   37
removing .........................................................   37
D
Dielectric strength .................................................   31
Disconnected position ...........................................   27
Distance between pole centres .............................   30
E
Earthing terminal ...................................................   45
Electrical closing lock-out (-F1) .............................   29
F
Factory number .....................................................   30
G
Gear unit .......................................................   16–  17
H
Hand crank ....................................................   15,   59
Hand crank coupling .....................................   15–  17
Heater (-R01) ........................................  16–  18,   26
High-voltage protective earthing ............................  45
I
Installation altitudes ...............................................  31
Installation position ................................................  36
Interlock, mechanical ....................................   18,   27
Interlocks ...............................................................  27
IP plate .........................................................   18,   43
Isolator ..........................................................   13–  15
K
Key-operated interlock ..................   15,   17–  18,   29
L
Low-voltage
interface (-X0) ........................................   18,   46
plug connector (-X0) ...............   13–  14,   16–  17
plug-connector with sleeve housing ................  18
M
Manual closing, mechanical ..................................  18
Manual opening, mechanical .................................  18
Mating contact .......................................................  53
Motor (-M1) ...................................................   16–  19
Motor short-circuit protection .................................  19
Moving ...................................................................  55
O
OPEN pushbutton ..................................................  15
Opening spring ......................................................  60
Operating mechanism ...........................................  15
Operating position .................................................  27
Operating times .....................................................  32
Operations counter .......................................   15–  18
P
PG fitting .......................................................   18,   39
Plug
(-X01) and (-X02) ...................................   16–  17
(-X1) .......................................................   16–  18
withdrawable part ............................................  48
Plugs
(-Q0) ................................................................  47
(-Q1) ................................................................  48
(-X1.3) and (-X1.4) for PG fitting .....................  47
Pole assembly .......................................................  14
Pole contact plate .........................................   13–  14
Pole head .....................................................   13–  14
Pole shell ..............................................   13–  14,   40
Position indicator CLOSED-OPEN ...............   15–  17
Position switch .......................................................  21
(-S12) .....................................................   16–  18
(-S21) .............................................   16–  18,   21
(-S3) ...............................................   16–  18,   21
(-S4) ...............................................   16–  18,   21
(-S5) .......................................................   17–  18
(-S6) ...............................................   16–  17,   23
R
Rated duration of short circuit ................................  30

Index
66 9229 0025 176 0-
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Rated frequency ....................................................  30
Rated lightning impulse withstand voltage ............   30
Rated normal current ....................................  30,   50
Rated operating sequence ....................................   30
Rated power frequency withstand voltage ............   30
Rated short-circuit breaking current ..............  30,   50
Rated voltage ................................................  30,   50
Rating plate ...........................................  13–  14,   30
Resistor (-R1) ........................................  16–  17,   25
S
Separating shell ....................................  13–  14,   40
mounting .........................................................   40
Shaft cover ....................................................  18,   44
Shunt release
(-Y1), first release ...........................  16–  18,   21
(-Y2), second release .....................  16–  18,   23
Spiral spring pin ....................................................   51
Spring pin ..............................................................   51
Spring state indicator ....................................  15–  17
Standards ..............................................................   12
T
Terminal thread .....................................................   50
Threaded rod .........................................................   51
Type designation ...................................................   30
U
Undervoltage release (-Y7) ...................  18,   25,   48
V
Vacuum interrupter ........................................  13–  14
contact stroke .................................................   14
contact system ................................................   14
service life .......................................................   62
W
Withdrawable part .................................  14,   42,   54
Withdrawable part handle .....................................   55

Central legend

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Central legend

10 Withdrawable part

20 Operating mechanism

20.1 Cover

21 Rating plate

22 Contact arm

22.1 Threaded bolt

22.2 Contact arm adapter

23 Break contact

23.1 Contact system

31 Auxiliary switch (-S1)

32 Low-voltage plug connector (-X0), (optional)

33.1 Connector strip (-X1.2 and -X1.4), 20-pole

33.2 Plug (-X01) and (-X02), (optional)

33.3 Plug (-X1), only for 20-pole connector strip

(-X1.2 and -X1.4)

34 Auxiliary contactor (-K1)

41 Panel separating from operating mecha-

nism side (optional)

42 Pole head with pole contact plate

42.2 Pole head with cooling ribs

42.1 Pole head cooler

43 Vacuum interrupter

44 Pole contact plate

45 Isolator

46 Pole shell

47 Panel separating from unit (optional)

49 Holder

51.1 First shunt release (-Y1)

51.2 2nd release

51.3 3rd release

52 Closing solenoid (-Y9)

53 Motor (-M1)

54.1 Position switch (-S12)

54.2 Position switch (-S21)

54.3 Position switch (-S3)

54.4 Position switch (-S4)

54.5 Position switch (-S5)

54.6 Circuit-breaker tripping signal (-S6)

55 Closing spring

55.1 Spring state indicator

56.1 CLOSE pushbutton

56.2 OPEN pushbutton

56.3 Position indicator

57 Gear unit

57.1 Opening for hand crank

57.2 Hand crank coupling

58 Operations counter

59.2 Mechanical interlock or sensing (optional)

59.3 Key-operated interlock (optional)

59.4 Heater (-R01), for condensation water pro-

tection (optional)

59.5 Electrical closing lock-out (-F1), (optional)

59.6 Resistor (-R1), for undervoltage release

(-Y7), (optional)

Published by

Siemens AG

Energy Management Division

Medium Voltages & Systems

Schaltwerk Berlin

Nonnendammallee 104

13629 Berlin

Germany