Voltage control relay
-
17.5 mm MUS/MUSF 80 AC/DC Part number 84872141
Control relays monitoring their own power supply
Over/undervoltage control
Selectable latching (memory) function
Over/undervoltage control
Adjustable time delays
Control in 50 Hz, 60 Hz or DC
True RMS measurement
LED status indication
Type
Functions
Controlled ranges
84872140
MUS 12 DC
Under/Overvoltage control
9→15VDC
CONTACT US
MUS 12 DC
Under/Overvoltage control in window mode
9→15VDC
84872141
MUS/MUSF 80 AC/DC
Under/Overvoltage control
20→80VAC/DC
84872151
MUS/MUSF 80 AC/DC
Under/Overvoltage control in window mode
20→80VAC/DC
84872142
MUS/MUSF 260 AC/DC
Under/Overvoltage control
65→260VAC/DC
84872152
MUS/MUSF 260 AC/DC
Under/Overvoltage control in window mode
65→260VAC/DC
Supply
Polarity with DC voltage
AC supply voltage frequency
50 / 60 Hz
±
10%
Galvanic isolation of power supply/measurement
No
Immunity from micro power cuts
10 ms
Inputs and measuring circuit
Max. measuring cycle time
250 ms/True RMS measurement
Display precision
±
10% of full scale
Repetition accuracy with constant parameters
±
0,5%
Measuring error with voltage drift
< 1% across the whole range
Measuring error with temperature drift
±
0,05% / °C
Timing
Delay on thresold crossing
0,1→10sec(0,+10%)
Repetition accuracy with constant parameters
±
0,5%
Reset time
1,5 s
Delay on pick
-up
500 ms in AC / 1 s in DC
Output
Type of output
1 single pole changeover relay
Type of contacts
No cadmium
Maximum breaking voltage
250 V AC/DC
Max. breaking current
5 A AC/DC
Min. breaking current
10 mA / 5 V DC
Electrical life (number of operations)
1 x 105
Breaking capacity (resistive)
1250 VA AC
Maximum rate
360 operations/hour at full load
Operating categories acc. to IEC 60947
-5-1
AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14
Mechanical life (operations)
30 x 106
Insulation
Nominal insulation voltage IEC 60664
-1
250 V
Insulation coordination (IEC 60664
-1 / 60255-5)
Overvoltage category III: degree of pollution 3
Rated impulse withstand voltage IEC 60664
-1/60255-5
4 KV (1,2 / 50
μ
s)
Dielectric strength IEC 60664
-1/60255-5
2 KV AC 50 Hz 1 min
Insulation resistance IEC 60664
-1 / 60255-5
> 500 M
Ω
/
500 V DC
General characteristics
Display power supply
Green LED
Display relay
Yellow LED
Casing
17,5 mm
Mounting
On 35 mm symmetrical DIN rail, IEC/EN 60715
Mounting position
All positions
Material: enclosure plastic type VO to UL94 standard
Incandescent wire test according to IEC 60695-2-
11 & NF EN 60695
-2-11
Protection (IEC 60529)
Terminal block: IP 20
Casing: IP 30
Connecting capacity IEC 60947
-1
Rigid: 1 x 4
2 - 2 x 2.52
mm
2
www.crouzet.com
14/10/2010
The under or overvoltage threshold value is set by a graduated potentiometer by reading the Un scale to be monitored directly.
The hysteresis is set by a graduated potentiometer from 5 to 20% of the preset threshold. The hysteresis value cannot be higher than the extremes of the measurement range.
In overvoltage mode, if the controlled voltage exceeds the preset threshold for longer than the time set on the front face (0.1 to 10 s), the output relay opens and LED R is extinguished. During the
time delay, this LED flashes.
Once the voltage falls below the threshold value minus the hysteresis, the relay closes instantaneously.
In undervoltage mode, if the controlled voltage falls below the preset threshold for longer than the time set on the front face (0.1 to 10 s), the output relay opens and LED R is extinguished. During
the time delay, this LED flashes.
1 x 11 AWG - 2 x 14 AWG
Flexible with ferrules: 1 x 2.52 - 2 x 1.52
mm
2
1 x 14 AWG - 2 x 16 AWG
Max. tightening torques
IEC 60947
-1
0,6→1Nm/5,3→8,8Lbf.In
Operating temperature IEC 60068
-2
-
20→+50°C
Storage temperature IEC 60068
-2
-
40→70°C
Humidity IEC 60068
-2-30
2 x 24 hr cycle 95% RH max. without condensation 55°C
Vibrations according to IEC/EN60068
-2-6
10→150Hz,A=0.035mm
Shocks IEC 60068
-2-6
5 g
Standards
Marking
CE (LVD) 73/23/EEC
-
EMC 89/336/EEC
Product standard
NF EN 60255
-
6 / IEC 60255
-
6 / UL 508 / CSA C22.2 N°14
Electromagnetic compatibility
Immunity EN 61000
-6-
2/IEC 61000
-6-2
Emission EN 61000
-6-
4/EN 61000
-6-3
IEC 61000
-6-
4/IEC 61000
-6-3
Emission EN 55022 class B
Certifications
UL, CSA, GL
Conformity with environmental directives
RoHS, WEEE
Supply
Nominal voltage (V)
24→48VAC/DC
Power consumption at Un
3.9 VA in AC/1.6 W in DC
Operating range
15→100VAC/DC
Range of adjustment
20→80VAC/DC
Inputs and measuring circuit
Hysteresis
5→20%ofthreshold(MUS)
3% (fixed) of threshold (MUSF)
General characteristics
Weight
80 g
Description
Code
Removable sealable cover for 17.5 mm casing
84800000
Dimension Diagram : MUS
-
MUSF
: MUS
-
Under/overvoltage
- without latching
www.crouzet.com
14/10/2010
Once the voltage rises above the threshold value plus the hysteresis, the relay closes instantaneously.
If "with memory" mode has been selected, the relay opens and stays in this position when threshold crossing is detected. The power supply must be disconnected to reset the product.
MUSF relays operate in window mode: they check that the controlled voltage stays between a minimum and maximum threshold.
The under and overvoltage threshold values are set by two graduated potentiometers by reading the Un scale to be monitored directly.
The hysteresis is fixed, value: 3 % of the preset thresholds.
If the controlled voltage exceeds the preset upper threshold, or falls below the preset lower threshold for longer than the time set on the front face (0.1 to 10 s), the output relay opens and LED R is
extinguished. During the time delay, this LED flashes.
Once the voltage returns to below the upper threshold value minus the hysteresis, or above the lower threshold value plus the hysteresis, the relay closes instantaneously.
When the unit is powered up with a measured fault, the relay stays open.
N
o
Legend
1
Threshold
2
Hysteresis
3
Overvoltage function relay
4
Undervoltage underload function relay
5
Controlled signal
6
Delay on threshold crossing (Tt)
: MUS
- Under and overvoltage - with latching
N
o
Legend
1
Threshold
2
Hysteresis
3
Overvoltage function relay
4
Undervoltage function relay
5
Controlled signal
Delay on threshold crossing (Tt)
: MUSF
- Under and overvoltage controller in window mode
N
o
Legend
1
High threshold
2
Low threshold
3
Hysteresis
4
Controlled signal
5
Delay on threshold crossing (Tt)
6
Relay
: MUS
-
MUSF
www.crouzet.com
14/10/2010
N
o
Legend
1
1 A fast-blow fuse or cut-out
Special adaptations
Customisable colours and labels
Fixed threshold in the generic measurement range
Fixed or adjustable time delay
Adjustable hysteresis
Adaptations dedicated to MUS 12 DC, MUS 80 AC, MUS 260 AC:
Possible to delete settings
Adjustable fixed hysteresis
www.crouzet.com
14/10/2010
