SION(R) 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 0Version: 12.2017 en (c) Siemens AG 2017. All rights reserved. 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: 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. Qualified personnel For the purpose of these operating instructions or the warning notices on the vacuum circuit-breaker, qualified personnel are persons who are familiar with the transport, 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 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 Siemens. 2 9229 0025 176 02018-01-18 Contents For your safety ................................................................................................................................................... 2 List of abbreviations ............................................................................................................................................ 4 Transport, storage and packing .................................................................................................................. 5 Transport ............................................................................................................................................................. Unpacking ........................................................................................................................................................... Reuse of transport unit ........................................................................................................................................ Storage ............................................................................................................................................................... 5 6 9 9 General information ....................................................................................................................................... 11 Areas of application .......................................................................................................................................... Standards .......................................................................................................................................................... Type approval as per the German X-Ray Ordinance ........................................................................................ Scope of delivery .............................................................................................................................................. 11 12 12 12 Description ........................................................................................................................................................ 13 Design ............................................................................................................................................................... Interlocks ........................................................................................................................................................... Rating plate ....................................................................................................................................................... Technical data ................................................................................................................................................... Ambient conditions ............................................................................................................................................ Installation altitudes .......................................................................................................................................... Operating times ................................................................................................................................................. Circuit diagrams ................................................................................................................................................ 13 27 30 30 31 31 32 33 Mounting ............................................................................................................................................................. 35 Fixing in the switching cubicle ........................................................................................................................... Earthing ............................................................................................................................................................. Connecting the low voltage ............................................................................................................................... Electrical connection of the main conductors .................................................................................................... Inserting the vacuum circuit-breaker SION(R) with withdrawable part ................................................................ 36 45 46 49 54 Operation ............................................................................................................................................................ 57 Commissioning ................................................................................................................................................. First closing operation ....................................................................................................................................... Closing .............................................................................................................................................................. Opening ............................................................................................................................................................ 57 58 60 60 Maintenance ...................................................................................................................................................... 61 Maintenance and servicing ............................................................................................................................... Service life of the vacuum interrupters .............................................................................................................. Accessories and spare parts ............................................................................................................................. Manufacturer's product liability .......................................................................................................................... Disposal ............................................................................................................................................................ Service .............................................................................................................................................................. 61 62 62 63 63 63 Index ..................................................................................................................................................................... 65 Central legend .................................................................................................................................................. 67 9229 0025 176 02018-01-18 3 List of abbreviations CO Close-Open DIN Deutsches Institut fur 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) 4 9229 0025 176 02018-01-18 Transport, storage and packing Transport, storage and packing Transport 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-carrying capacity. Observe transport symbols. Transport weight Refer to the delivery documents for the weight of the transport unit. 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. Place the transport unit on a level, non-slip and pressure-Resistant surface for intermediate storage. Transport vacuum circuit-breaker to the mounting or storage location in its original transport unit. Transporting with crane or fork lift Fig. 1 9229 0025 176 02018-01-18 Transporting the pallet with carton 5 Transport, storage and packing Transporting with packaging Checking the transport unit 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: * 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 company 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 system if not fixed. Before undoing the belt straps, ensure that the vacuum circuit-breaker is positioned safely and hook sling gear to the points marked with crane hooks (see Fig. 5 to Fig. 7). 6 9229 0025 176 02018-01-18 Transport, storage and packing Fig. 2 Opening the transport unit * * * * * * * * Removing the fixing from the carton 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. 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 9229 0025 176 02018-01-18 Fig. 4 Example - unpacking version with cartridge insert 7 Transport, storage and packing 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 8 Transporting, only 31.5 kA with distance between pole centres 150/160 9229 0025 176 02018-01-18 Transport, storage and packing Note Keep accessory pack on hand for mounting. 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 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 protection, and it must be ensured that the vacuum circuit-breaker cannot be damaged. Storage room Enclosed, dry, well ventilated, and as free from dust as possible, with a relative humidity of less than 60 %. 9229 0025 176 02018-01-18 Transport unit Storage time Temperature range Comment Number of units per stack Unopened Max. 6 months -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 corrosion protection if necessary -- 9 Transport, storage and packing Blank page 10 9229 0025 176 02018-01-18 General information General information 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 activities specified in these operating instructions. 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. Note In the event of subsequent attachments or fittings, e. g. locking parts in connection 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 customer, 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-breaker are shown here. Areas of application Vacuum circuit-breakers SION(R) are 3-pole interior circuit-breakers for a rated voltage 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 performed only by personnel trained by Siemens (see also "Maintenance" on p. 61). 9229 0025 176 02018-01-18 11 General information Intended use Vacuum circuit-breakers SION(R) 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(R) operate in continuous, periodic and short-term operation. Standards The vacuum circuit-breakers SION(R) comply with the regulations: * * IEC 62271-1 and IEC 62271-100. All vacuum circuit-breakers SION(R) 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 defined 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(R) * or vacuum circuit-breaker SION(R) 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 12 9229 0025 176 02018-01-18 Description 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 9229 0025 176 02018-01-18 20.1 Cover 44 Pole contact plate 21 Rating plate 45 Isolator 32 Low-voltage plug connector (-X0), 46 Pole shell (optional) 47 Separating shell to system side 42 Pole head 43 Vacuum interrupter 13 Description Fig. 12 Operating mechanism side with separating shells (towards operating mechanism side) Fig. 14 Operating mechanism side with separating shells (towards operating mechanism side) and withdrawable part Fig. 13 Pole side 10 Withdrawable part 42 Pole head 20.1 Cover 43 Vacuum interrupter 21 Rating plate 44 Pole contact plate 32 Low-voltage plug connector (-X0), 45 Isolator (optional) 46 Pole shell 41 Separating shell to operating mechanism 47 Separating shell to system side side (optional) 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. 14 9229 0025 176 02018-01-18 Description Operating mechanism The operating mechanism contains all the electrical and mechanical components required 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 Fig. 15 Control panel Fig. 16 Control panel 20.1 Cover 56.3 Position indicator CLOSED-OPEN 55.1 Spring state indicator 57.2 Hand crank coupling 56.1 CLOSE pushbutton 58 Operations counter 56.2 OPEN pushbutton 59.3 Key-operated interlock (optional) 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 motor 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 9229 0025 176 02018-01-18 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. 15 Description Secondary equipment 31 Auxiliary switch (-S1) 54.3 Position switch (-S3), control for (-K1) 32 Low-voltage plug connector (-X0), (optional) 54.4 Position switch (-S4), message "Closing spring charged" 33.1 Connector strip (-X1.2 and -X1.4), 20-pole 54.6 33.2 Plugs (-X01) and (-X02) for withdrawable part (optional) 33.3 Plug (-X1) only when ordering the 20-pole connector strip 55 Closing spring 34 Auxiliary contactor (-K1), shutdown (-Y9) and anti-pumping 55.1 Spring state indicator device 56.3 Position indicator CLOSED-OPEN First shunt release (-Y1) 57 Gear unit 51.2 2nd release (optional) 57.2 Hand crank coupling 52 Closing solenoid (-Y9) 58 Operations counter 53 Motor (-M1), charging the closing spring 59.4 Heater (-R01), condensation water protection (optional) 54.1 Position switch (-S12), prevents electrical closing in 59.6 Resistor (-R1) for undervoltage release (-Y7), (optional) 51.1 Position switch (-S6), circuit-breaker tripping signal (optional, not shown) mechanical interlock (not shown) 54.2 Position switch (-S21), motor control Fig. 17 16 Open operating mechanism 9229 0025 176 02018-01-18 Description 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 55 Closing spring 34 Auxiliary contactor (-K1), shutdown (-Y9) and anti-pumping 55.1 Spring state indicator device 56.3 Position indicator CLOSED-OPEN 51.1 First shunt release (-Y1) 57 Gear unit 51.2 2nd release (optional) 57.2 Hand crank coupling 51.3 3rd release (optional) 58 Operations counter 52 Closing solenoid (-Y9) 59.3 Key-operated interlock (optional) 53 Motor (-M1), charging the closing spring 59.4 Heater (-R01), condensation water protection (optional) 54.1 Position switch (-S12), prevents electrical closing in 59.5 Electrical closing lock-out (-F1), (optional, not shown) mechanical interlock (not shown) 59.6 Resistor (-R1), in dependence on voltage 1 or 2 resistors, 54.5 54.6 54.2 Position switch (-S21), motor control 54.3 Position switch (-S3), control for (-K1) 54.4 Position switch (-S4), message "Closing spring charged" Fig. 18 9229 0025 176 02018-01-18 Position switch (-S5), electrical closing lock-out or keyoperated interlock (optional) Position switch (-S6), circuit-breaker tripping signal (optional, not shown) for undervoltage release (-Y7), (optional) Open operating mechanism 17 Description Basic equipment Equipment The basic equipment of the vacuum circuit-breaker SION(R) contains the following: Motor 3AY1411, for charging the closing spring (-M1) Position switch 3AX4206-0A, for motor control (-S21) Anti-pumping device * electrical 3AY1420 * mechanical (-K1) 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 * Plug, Faston flat connector (only with 20-pole connector strip) (-X1.1 to -X1.4) (-X1) Operations counter Mechanical manual closing and opening Additional equipment The vacuum circuit-breaker SION(R) (not for all designs) can also be fitted with the following equipment: 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) * (-R1) with resistor for undervoltage release (-Y7) Heater (condensation water protection) (-R01) Electrical closing lock-out 3AX1405 (-F1) * (-S5) with position switch, electrical closing lock-out 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 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 possible combinations of the additional equipment as well as special designs, refer to catalogue HG11 or contact the relevant Siemens representative. 18 9229 0025 176 02018-01-18 Description Motor (-M1) 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 delivery of the vacuum circuit-breaker and must be ordered separately. Fig. 19 Motor (53) 2) Fig. 20 V 24 W/VA 3AE5 AC1) DC Rated supply voltage U*) 48 90 60 110 220 110 230 100 90 100 130 350 Power consumption of motor AC1) DC Rated supply voltage U*) V 24 48 60 110 220 110 230 Rated current of the protective A device I**) 5 2 1.6 1 0.5 1 1.5 Fig. 21 Recommendation for motor protection device *) The operator's supply voltage is permitted to deviate from the rated supply voltage of the vac- **) Built-in automatic circuit-breaker with C characteristic uum circuit-breaker by -15 % to +10 %. 9229 0025 176 02018-01-18 1) 50/60 Hz. 2) 50 W VA (empirically determined values) 19 Description Auxiliary contactor (-K1) 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 (pumping). Fig. 22 Auxiliary contactor (34) Closing solenoid (-Y9) 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 circuitbreaker by -15 % to +10 %. The closing solenoid (-Y9) is protected against overvoltage 60 V. Power consumption 300 to 370 W / VA (3AY1410) Fig. 23 20 Closing solenoid (52) 9229 0025 176 02018-01-18 Description First shunt release (-Y1) In the case of the first shunt release (-Y1), the electrically fed tripping pulse is passed to the "OPEN" latch by means of a directly acting magnet armature, thus opening the vacuum circuit-breaker. The first shunt release (-Y1) 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 may deviate from the rated 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 overvoltage 60 V. Power consumption 300 W / VA (3AY1410) Fig. 24 First shunt release (51.1) Position switch 3AX4206-0A Position switch (-S21) switches the motor off after charging 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) 9229 0025 176 02018-01-18 21 Description Auxiliary switch (-S1) Auxiliary switch (-S1) is available for delivery in two versions: With 6 normally open contacts or 12 normally closed contacts each. Contacts available on the customer's premises - see circuit diagram supplied. Fig. 26 Auxiliary switch (31) Power consumption Rated insulation voltage: Insulation group: Continuous current: Closing capacity: 250 V AC/DC C as per VDE 0110 10 A 50 A Breaking capacity 22 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 9229 0025 176 02018-01-18 Description Circuit-breaker tripping signal (-S6) 3AX4206-0A The position switch (-S6) makes contact briefly when the vacuum circuit-breaker is opened by means of an electrical release. This contact can be used for a signal. Fig. 27 Circuit-breaker tripping signal (54.6) A further shunt release, current transformer-operated release or undervoltage release can be installed as a second or third release. 2nd shunt release 3AX1101 Fig. 28 Second shunt release (51.2) Fig. 29 Second shunt release (51.2) 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 armature to the "OPEN" latch by release of an energy storage mechanism, thus opening the vacuum circuit-breaker. This opening solenoid is not designed for continuous operation. Necessary varistors and rectifiers are integrated in the release. Power consumption 9229 0025 176 02018-01-18 10 W / VA 23 Description C.t.-operated release (-Y4), (-Y5) 3AX1102, (-Y6) 3AX1104 Fig. 30 C.t.-operated release (51.3) Fig. 31 C.t.-operated release (51.3) The c.t.-operated releases (-Y4), (-Y5) or (-Y6) consist of an energy store, an unlatching fixture and an electromagnetic system. If the tripping current is exceeded (90 % of the transformer-operated release's rated current), the stored energy mechanism 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 6 VA at 90 % of the current transformeroperated release's rated current and with open armature. Power consumption 24 10 W / VA 9229 0025 176 02018-01-18 Description Undervoltage release (-Y7) 3AX1103 Note The undervoltage release (-Y7) may only be operated with the supplied series resistor (-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). 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 normally closed contact in the tripping circuit, but can also be done with the aid of a normally 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 A 20 W / VA B (-R1) Resistor (-S1) Auxiliary switch (-Y7) Undervoltage release Fig. 32 Undervoltage release (51.7), in dependence on voltage 1 or 2 resistors 9229 0025 176 02018-01-18 Fig. 33 Typical circuit for connection of the undervoltage release (-Y7) 25 Description Heater (-R01) for condensation water protection (optional) The heater limits condensation and corrosion of the vacuum 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. The surface temperature of the heating is approx. 180 C. Power consumption 26 50 W, rated voltage 230 V AC, optionally 110 V AC 9229 0025 176 02018-01-18 Description . 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. 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 interlock. This also applies to vacuum circuit-breakers on switchgear trucks, in withdrawable sections or with disconnectors. Conditions The vacuum circuit-breaker must only be closed in operating or disconnected position. The operating or disconnected position is the position of the vacuum circuitbreaker 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 switchgear counter-contacts is attained 100 %. Operating position The circuit-breaker is inserted fully into the switchgear and the vacuum circuit-breaker contacts overlap completely with the switchgear counter-contacts. Mechanical interlock (optional) A sensing and actuation component (b) on the system side detects the operating position (CLOSED/OPEN) of the vacuum circuit-breaker. CLOSED switch position If the vacuum circuit-breaker is closed, actuation of the system's sensing and actuation component (b) is prevented. A mechanical system in the switchgear truck or withdrawable section reliably blocks movements of the circuit-breaker on the switchgear 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 mechanical interlock and reliably blocks closing of the vacuum circuit-breaker. 9229 0025 176 02018-01-18 27 Description . 35 0.3 mm Z Fig. 35 a b Mechanical interlock Stroke in the OPEN switch position (min. 5 mm, max. 10 mm) 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 included in the dimension drawing supplied. 28 9229 0025 176 02018-01-18 Description Key-operated interlock 3AX1437 (optional) If the vacuum circuit-breaker is equipped with a key-operated 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 circuitbreaker is locked with the key-operated interlock and must be unlocked for test switching operations and commissioning. Fig. 36 Key-operated interlock (59.3) Electrical closing lock-out (-F1) 3AX1415 (optional) 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 available and mechanically locks both manual closing and electrical closing if auxiliary voltage is not available (position switch -S5). Note: For mechanical or electrical circuits the electrical closing lock-out 3AX1415 must be connected to the control voltage, otherwise no closing is possible. Fig. 37 Electrical closing lock-out (59.5) 9229 0025 176 02018-01-18 29 Description Rating plate Q 600806 Kontr 14 1 0001-II-10_de 13 12 11 10 8/9 Fig. 38 Type No. Ur Isc Ud/Up 3AE50123-2 S 3AE50123-2 17.5 kV 50/60 Hz 31.5 kA 42/95 kV Year of manufacture 2017 Ir 1250 A tk 3s m 80 kg 2 3 4 5 Rated operating sequence: O - 0.3 s - CO - 3 min - CO 6 7 Class as per IEC 62271-100 E2, C2, M2 Made in Germany Example - rating plate 1 Manufacturer 2 Year of manufacture 3 Rated normal current Ir 4 Rated duration of short circuit tk 5 Weight 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 Technical data Rated voltage* Ur kV Rated normal current Ir A Rated lightning impulse withstand voltage (peak value) Up kV 60 75 (95**) 95 125 Rated power frequency withstand voltage (effective value) Ud kV 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 A, B, C A, B, C 7.2 12 800 - 2500*** Rated operating sequence A 17.5 24 800 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 Fig. 39 Technical data (excerpt from the catalogue) Dimensions and weights The dimensions of the vacuum circuit-breaker can be taken from the relevant dimension 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. 30 9229 0025 176 02018-01-18 Description Ambient conditions Occasional condensation may occur under these ambient conditions. Vacuum circuit-breakers SION(R) are suitable for use in the following climate classes according to IEC 60721, part 3-3: Class * Climatic ambient conditions: 3K41) Fig. 40 * * * Biological ambient conditions: Mechanical ambient conditions: Chemically active substances: 3B1 3M2 * Mechanically active substances: 3S23) 3C22) 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 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: U U0 * K a U Rated withstand voltage U under standard reference atmosphere U0 Required rated withstand voltage for the installation location Ka Altitude 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 voltage (between phases, phase-ground, applied longitudinally) Example For a required rated withstand voltage of 75 kV at an altitude of 2500 m, an insulation level of at least 90 kV under standard reference atmosphere conditions is required: Fig. 41 Altitude correction factor Ka 9229 0025 176 02018-01-18 90 kV 75 kV * e1 * (2500 - 1000)/8150 75 kV * 1.2 31 Description Operating times 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) 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 Fig. 42 > 10 ms 2 ms 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 extinction 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 contact 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. 32 9229 0025 176 02018-01-18 Description 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 Extended auxiliary switch "OPEN" release -Y1 -Y2 -Y4, -Y5 -Y6 -Y7 Fig. 43 Sample circuit diagram 64-pole plug connector (part 1) of the vacuum circuit-breaker -F1 Electrical closing lock-out (optional, only) -S4 Position switch ("Closing spring charged" signal) HA Manual opening -S6 Position switch (for circuit-breaker tripping signal) HE Manual closing -X0 Low-voltage interface -K1 Auxiliary contactor (anti-pumping device) -Y1 First shunt release -M1 Motor -Y2 Second shunt release P Energy storage mechanism -Y4 Current transformer-operated release -R1 Resistor -Y5, -Y7 Current transformer-operated release -S1 Auxiliary switch -Y6 Current transformer-operated release -S12 Position switch (prevents electrical switching if there is -Y7 Undervoltage release a mechanical interlock) -Y9 Closing solenoid -S21 Position switch (switches off the motor after charging) -S3 Position switch (opens when closing spring is charged) 9229 0025 176 02018-01-18 33 Description The unassigned auxiliary switch terminals are wired up with the 64-pole plug bottom as shown. Normal auxiliary switch a) Extended auxiliary switch b) 9862-75 No wiring required if Fig. 44 a) Second shunt release (-Y2) available b) Undervoltage release (-Y7) available Example - auxiliary switch terminals System wiring Tripping via Tripping via NO con- NC contact tact Circuit-breaker wiring 9862-74 System wiring Fig. 45 34 Sample switching operation for connection of the undervoltage release (-Y7) 9229 0025 176 02018-01-18 Mounting 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-energized 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 falling and cause injury to persons. * Observe weight. * Use means of transport suited to the requirements and load-carrying capacity. * 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). 9229 0025 176 02018-01-18 35 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(R) 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(R) from closing if the cover has been removed and the mechanical interlock has been actuated. 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(R) can only be installed perpendicular (to the vacuum interrupters) as a withdrawable part and as an indoor fixed mounting. Fig. 46 36 Installation position 9229 0025 176 02018-01-18 Mounting Removing and mounting the covers Remove the covers to mount the fixing lugs. Removing and mounting the cover Fig. 47 Removing the cover Fig. 48 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. * 9229 0025 176 02018-01-18 Mounting the cover 37 Mounting Removing and mounting the cover 4 0.4 Nm Fig. 49 Removing the cover Fig. 50 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 contact 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. * 38 Mounting the cover 9229 0025 176 02018-01-18 Mounting 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-tapping screws (Torx screwdriver, size 20) and a tightening torque of 3 0.3 Nm. 3 0.3 Nm Fig. 51 Wiring of connector strip, see page 46. Example - mounting the PG fitting 9229 0025 176 02018-01-18 39 Mounting 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. Fig. 52 Up to 17.5 kV, mounting separating shells * * * Fig. 54 * 40 Up to 17.5 kV, engaging separating shells Slide separating shells (47) onto previously mounted threaded rods of main conductors (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. 24 kV, mounting separating shells * Fig. 53 Fig. 55 24 kV, engaging separating shells 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. 9229 0025 176 02018-01-18 Mounting Fig. 56 Mounting separating shells * * * Fig. 57 Engaging separating shells 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 48 4 Nm 48 4 Nm Fig. 58 Mounting for fixed-mounted circuit-breaker from below Fig. 59 Mounting for fixed-mounted circuit-breaker from below 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 9229 0025 176 02018-01-18 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 41 Mounting threads only). Fixing to the withdrawable part For fixing to the withdrawable part, remove the cover prior to mounting (see "Removing and mounting the covers", page 37) and fix the cable harness in the operating mechanism (see "Connecting the low voltage", page 46). Fig. 60 Example with withdrawable part 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. Fig. 61 Mounting the fixing straps * * 42 Fig. 62 Mounting the fixing straps 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. 9229 0025 176 02018-01-18 Mounting 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. 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. The IP plate can also be mounted for vacuum circuit-breakers with withdrawable parts. Fig. 63 Installing a continuous IP plate (optional) * * * * 9229 0025 176 02018-01-18 Fig. 64 Mounting IP plates on both sides (optional, only for 31.5 kA and distance between pole centres 150/160 mm) 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. 43 Mounting 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 injuries. A shaft cover can be mounted on both sides to cover and prevent contact with the circuit-breaker shaft. * * Fig. 65 44 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. Mounting the shaft cover (optional) 9229 0025 176 02018-01-18 Mounting Earthing Note If the vacuum circuit-breaker SION(R) 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 circuitbreaker in this case. Connecting to earthing Connect the vacuum circuit-breaker on the earthing terminal (70) to the high-voltage protective earthing as specified (DIN EN 50341). 105 Nm Fig. 66 Connecting the earthing conductor 105 Nm Fig. 68 105 Nm Fig. 67 Connecting the earthing conductor * 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 operating mechanism box under the bolt head. Fix M12 hexagonal bolt with the fixing elements to the earthing terminal (70) with 105 Nm. Connect earthing conductor (only 31.5 kA and distance between pole centres 150/160 mm) 9229 0025 176 02018-01-18 45 Mounting 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 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) Wiring of connector strip with PG fitting * 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 46 Wiring the 20-pole connector strip (33.1) 9229 0025 176 02018-01-18 Mounting Connecting the control 20-pole connector strip lines for -X1 CLOSED signal potential (-Y9; 24 V to 240 V) (customer Faston crimp receptacle with insulating sleeve in the accessory pack) -M1 -Y1 -Y2/-Y4/-Y6/-Y7* -Y7* -S4 -S6* Internally wired -Y9 Reference potential "Close" Internally wired -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 potential of the CLOSED signal (-Y9; 24 V to 240 V) Heater* * only if ordered Fig. 71 Wiring the connector strip (-X1.3) and (-X1.4) at the customer site Connecting the low-voltage for the withdrawable part Fig. 72 Laying the cable harness Laying the cable harness (see Fig. 72) * * Laying the cable harness (see Fig. 73) * * 9229 0025 176 02018-01-18 Fig. 73 Laying the cable harness 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. 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. 47 Mounting Fig. 74 Mounting the plug for the withdrawable part Mounting the plug * * Fig. 75 Mounting the plug for the withdrawable part 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. * * * A Fig. 76 48 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 mechanism of the vacuum circuit-breaker). Mount the cover again in the reverse order (see "Removing and mounting the covers" page 37). B Removing the transport block 9229 0025 176 02018-01-18 Mounting Electrical connection of the main conductors DANGER High-voltage - danger to life Checking the vacuum circuit-breaker in the panel with applied high voltage is allowed 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. The conductor bars can be purchased from the Siemens Service Center. Preparing contact surfaces 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 cleaning tools. Silver-plated parts must not be bolted to aluminium bars! Fig. 77 Cleaning the connecting surfaces 9229 0025 176 02018-01-18 Fig. 78 Cleaning the connecting surfaces of the conductor bars 49 Mounting 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 Rated voltage Ur kV 7.2 - 17.5 24 Rated short-circuit breaking current Isc kA 16 - 31.5 16 - 25 Rated normal current Ir A 800 - 2500 800 1250 M12 M16 (for 1600 A) Terminal thread Upper terminal (A) mm Lower terminal (B) mm Fig. 79 20 1 20 1, 2000 A 28 1 20 1 Screw-in depths Connecting the main conductor 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. 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. Fig. 80 Screw-in depths in the upper and lower terminals Fig. 81 Mounting the conductor bars (flat). Example for 1 250 A 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 suit50 9229 0025 176 02018-01-18 Mounting able screwdriver or socket spanner. Securing with a spiral spring pin Tightening torque for - M12: 40 4 Nm - M16: 100 10 Nm Tightening torques apply to greased threads only. The conductor bars can be secured against twisting with a spiral spring pin according to ISO 8748 or a spring pin according to ISO 8752 -- 4 x X*) mm -- N -- C. A drill hole O 4H11 must be provided in the conductor bar (see Fig 81, horizontal arrow). 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 Fig. 82 Cleaning and mounting threaded rods (22.1) for contact arms (22) * * * * * 9229 0025 176 02018-01-18 Fig. 83 Cleaning and mounting contact arms (22) 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. 51 Mounting Fig. 84 Fitting the contact arms (22) * * * Fig. 86 52 For contact arms with O 40 mm, inserting the contact arm adapter (22.2) on the rear 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 O 40 mm, insert contact 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 spanner - Remove screw with washers and nut. Fixing contact systems with contact arm adapter to contact arms with O 40 mm * Fig. 85 Fig. 87 Fixing contact systems to contact arms with O 60 mm Grease contact systems for contact arms with O 60 mm (without contact arm 9229 0025 176 02018-01-18 Mounting * * * 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 9229 0025 176 02018-01-18 53 Mounting Inserting the vacuum circuit-breaker SION(R) with withdrawable part Fig. 89 Example - inserting into guide rails * Fig. 90 Example - inserting and locking 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(R) on the withdrawable part 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. 54 9229 0025 176 02018-01-18 Mounting Fig. 91 * * Example - moving in guide rails Insert the handle of withdrawable part 3AX1430-2C into the coupling of the withdrawable 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 following positions of the vacuum circuit-breaker with withdrawable part are sensed during movement: 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 provided on the withdrawable part, which is automatically extended 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 9229 0025 176 02018-01-18 55 Mounting Blank page 56 9229 0025 176 02018-01-18 Operation Operation 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 personnel 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. Commissioning Before commissioning, check the following points to ensure that the vacuum circuitbreaker is functioning faultlessly at operating temperature: 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. 9229 0025 176 02018-01-18 57 Operation 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 representative or Siemens Service and, if necessary, send back the vacuum circuit-breaker. Position indicator and spring state indicator when charging the closing spring, closing and opening Input Position indicator Charging with hand crank, with motor operating mechanism Closing "CLOSE" pushbutton, Remote tripping Opening "OPEN" pushbutton, Remote tripping Spring state indicator * * Spring only charged if motor voltage is applied Fig. 93 Operating element indicators First closing operation 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. If all functions have been checked and are OK, switch on the high voltage while observing all of the safety regulations and operational requirements. 58 9229 0025 176 02018-01-18 Operation Charging the closing spring 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 circuitbreaker must be charged only using the original hand crank. 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: Discharged Fig. 94 Charged Charging the closing spring with the hand crank The adapter of the hand crank is designed in such a way that the hand crank becomes uncoupled when the motor supply voltage returns. 9229 0025 176 02018-01-18 59 Operation Closing Provided there is no lock-out due to a mechanical interlock, send the closing command via the CLOSE pushbutton or the corresponding command element until the vacuum circuit-breaker is closed and shows and signals the CLOSED switch position. Change of the position indicator: OPEN CLOSE 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: Charged Discharged Charged Opening The opening spring is charged during the closing operation. To open, send the opening command via the OPEN pushbutton or the corresponding command element until the vacuum circuit-breaker is open, and shows and signals the OPEN switch position. Change of the switch position indicator after electrical opening: CLOSE OPEN 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 pushbuttons manually one after the other. This ensures that the vacuum circuit-breaker is open and the closing spring is discharged. 60 9229 0025 176 02018-01-18 Maintenance Maintenance Maintenance and servicing 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 The vacuum circuit-breaker SION(R) is maintenance-free under normal operating conditions (up to rated current). We do, however, recommend you to carry out regular visual inspections. The highest permissible mechanical operating cycle number is * 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 pushbuttons 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 insulating parts and possibly the outer parts of the circuit-breaker at shorter intervals. Cleaning 9229 0025 176 02018-01-18 61 Maintenance 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 detergent 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. CAUTION Risk of injury! The vacuum circuit-breaker should be taken out of the switchgear or switch cabinet 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 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) 3AX1133-4A e. g. Atlantic white, Atlantic Mineralolwerk GmbH Fig. 95 Comment Pasty consistency, flash point 210 C, low acid 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. 62 9229 0025 176 02018-01-18 Maintenance 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 Siemens. * 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 submitted to the responsible Siemens representative. Disposal Metal Electronics Materials The materials of the vacuum circuit-breaker should be recycled. Disposal of the vacuum circuit-breaker with minimum environmental impact is possible on the basis of existing legal regulations. 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. Electronic scrap must be disposed of in accordance with applicable regulations. 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 Hazardous substances Further information If the packaging is no longer needed, it can be fully recycled. When delivered by Siemens, the product does not contain any hazardous substances within the scope of the Hazardous Substances Ordnance applicable to the territory of the Federal Republic of Germany. For operation outside the Federal Republic of Germany, the applicable local laws and regulations must be complied with. Contact your Siemens Service Centre if you require further information. Service Global customer service 9229 0025 176 02018-01-18 Contact person for service work (24 h): * Telephone: +49 180/524 7000 * Fax: +49 180/524 2471 * On the internet at the following web address: www.siemens.com/energy-support * By email: support.energy@siemens.com 63 Maintenance Blank page 64 9229 0025 176 02018-01-18 Index Index A Accessories available for order ............................. Altitude correction factor ....................................... Ambient conditions ................................................ Anti-pumping device ............................................. Areas of application .............................................. Auxiliary contactor (-K1) ........................ 16- 17, Auxiliary switch (-S1) ............................ 16- 18, High-voltage protective earthing ............................ 45 62 31 31 18 11 20 22 B Basic equipment ................................................... 18 Bushing ................................................................. 53 C C.t.-operated release (-Y4) ........................................................ 18, (-Y5) ........................................................ 18, (-Y6) ........................................................ 18, Cable harness ....................................................... Circuit-breaker tripping signal (-S6) ...... 16- 18, Climate classes ..................................................... CLOSE pushbutton ............................................... Closing lock-out (-F1), electrical ................... 17- Closing solenoid (-Y9) ........................... 16- 18, Closing spring ............................... 16- 17, 59- Conductor bar ....................................................... Connecting bar ...................................................... Connecting surface, pole ...................................... Connector strip (-X1.2) and (-X1.4) .................................. 16- 20-pole ............................................................ Connector strips (-X1.3) and (-X1.4) for PG fitting ..................... Contact arm .................................................. 51- Contact arm adapter ............................................. Contact system ..................................... 14, 52- Cover .................................................... 13- 15, mounting ......................................................... removing ......................................................... 24 24 24 47 23 31 15 18 20 60 50 50 50 18 46 47 52 52 53 37 37 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 9229 0025 176 02018-01-18 I Installation altitudes ............................................... Installation position ................................................ Interlock, mechanical .................................... 18, Interlocks ............................................................... IP plate ......................................................... 18, Isolator .......................................................... 13- 31 36 27 27 43 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 .................................. Manual opening, mechanical ................................. Mating contact ....................................................... Motor (-M1) ................................................... 16- Motor short-circuit protection ................................. Moving ................................................................... 18 18 53 19 19 55 O OPEN pushbutton .................................................. Opening spring ...................................................... Operating mechanism ........................................... Operating position ................................................. Operating times ..................................................... Operations counter ....................................... 15- 15 60 15 27 32 18 P PG fitting ....................................................... 18, Plug (-X01) and (-X02) ................................... 16- (-X1) ....................................................... 16- withdrawable part ............................................ Plugs (-Q0) ................................................................ (-Q1) ................................................................ (-X1.3) and (-X1.4) for PG fitting ..................... Pole assembly ....................................................... Pole contact plate ......................................... 13- Pole head ..................................................... 13- Pole shell .............................................. 13- 14, Position indicator CLOSED-OPEN ............... 15- Position switch ....................................................... (-S12) ..................................................... 16- (-S21) ............................................. 16- 18, (-S3) ............................................... 16- 18, (-S4) ............................................... 16- 18, (-S5) ....................................................... 17- (-S6) ............................................... 16- 17, 39 17 18 48 47 48 47 14 14 14 40 17 21 18 21 21 21 18 23 R Rated duration of short circuit ................................ 30 65 Index Rated frequency .................................................... Rated lightning impulse withstand voltage ............ Rated normal current .................................... 30, Rated operating sequence .................................... Rated power frequency withstand voltage ............ Rated short-circuit breaking current .............. 30, Rated voltage ................................................ 30, Rating plate ........................................... 13- 14, Resistor (-R1) ........................................ 16- 17, S Separating shell .................................... 13- 14, mounting ......................................................... Shaft cover .................................................... 18, Shunt release (-Y1), first release ........................... 16- 18, (-Y2), second release ..................... 16- 18, Spiral spring pin .................................................... Spring pin .............................................................. Spring state indicator .................................... 15- Standards .............................................................. 30 30 50 30 30 50 50 30 25 40 40 44 21 23 51 51 17 12 T Terminal thread ..................................................... 50 Threaded rod ......................................................... 51 Type designation ................................................... 30 U Undervoltage release (-Y7) ................... 18, 25, 48 V Vacuum interrupter ........................................ 13- contact stroke ................................................. contact system ................................................ service life ....................................................... 14 14 14 62 W Withdrawable part ................................. 14, 42, 54 Withdrawable part handle ..................................... 55 66 9229 0025 176 02018-01-18 Central legend Central legend 10 Withdrawable part 57.1 Opening for hand crank 20 Operating mechanism 57.2 Hand crank coupling 20.1 Cover 58 Operations counter 21 Rating plate 59.2 Mechanical interlock or sensing (optional) 22 Contact arm 59.3 Key-operated interlock (optional) 22.1 Threaded bolt 59.4 22.2 Contact arm adapter Heater (-R01), for condensation water protection (optional) 23 Break contact 59.5 Electrical closing lock-out (-F1), (optional) 23.1 Contact system 59.6 31 Auxiliary switch (-S1) Resistor (-R1), for undervoltage release (-Y7), (optional) 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 mechanism 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 9229 0025 176 02018-01-18 67 Published by Siemens AG Energy Management Division Medium Voltages & Systems Schaltwerk Berlin Nonnendammallee 104 13629 Berlin Germany