MUS/MUSF80

KEY FEATURES

  • 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 \⎓
  • True RMS measurement
  • LED status indication
FunctionsControlled rangesCode
Under/Overvoltage control20 →80 V ∿/⎓84872141
Under/Overvoltage control in window mode20 →80 V ∿/⎓84872151

Specifications


Supply voltage Un 24 →48 V ∿/⎓
Operating range 15 →100 V ∿/⎓
∿ supply voltage frequency 50 / 60 Hz ± 10 %
Power consumption at Un 3.9 VA in ∿/1.6 W in ⎓

Threshold adjustment 20 →80 V ∿/⎓
Hysteresis 5 →20 % of threshold (MUS) 3 % (fixed) of threshold (MUSF)

Weight 80 g

Polarity with ⎓ voltage
Galvanic isolation of power supply/measurement No
Immunity from micro power cuts 10 ms

Frequency of measured signal 0 Hz, 50... 60 Hz
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

Delay on thresold crossing Tt 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 ∿ / 1 s in ⎓

Type of output 1 single pole changeover relay
Type of contacts No cadmium
Maximum breaking voltage 250 V ∿/⎓
Max. breaking current 5 A ∿/⎓
Min. breaking current 10 mA / 5 V ⎓
Electrical life (number of operations) 1 x 105
Breaking capacity (resistive) 1250 VA ∿
Maximum rate 360 operations/hour at full load
Operating categories acc. to IEC/EN 60947-5-1 AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14
Mechanical life (operations) 30 x 106

Nominal insulation voltage IEC/EN 60664-1 250 V
Insulation coordination (IEC/EN 60664-1) Overvoltage category III : degree of pollution 3
Rated impulse withstand voltage (IEC/EN 60664-1) 4 KV (1,2 / 50 μs)
Dielectric strength (IEC/EN 60664-1) 2 KV ∿ 50 Hz 1 min
Insulation resistance (IEC/EN 60664-1) > 500 MΩ / 500 V ⎓

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/EN 60529) Terminal block : IP 20 Casing : IP 30
Connecting capacity IEC/EN 60947-1 Rigid : 1 x 42 - 2 x 2.52 mm2 1 x 11 AWG - 2 x 14 AWG Flexible with ferrules : 1 x 2.52 - 2 x 1.52 mm2 1 x 14 AWG - 2 x 16 AWG
Max. tightening torques IEC/EN 60947-1 0,6 →1 Nm / 5,3 →8,8 Lbf.In
Operating temperature IEC/EN 60068-2 -20 →+50 °C
Storage temperature IEC/EN 60068-2 -40 →70 °C
Humidity IEC/EN 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/EN 60068-2-6 5 g

Product standard IEC/EN 6025561
Electromagnetic compatibility (EMC) IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4
Certifications UL, CSA, GL
Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC
Conformity with environmental directives RoHS, WEEE

Technical sketches

MUS - Under/overvoltage - without latching

MUS - Under/overvoltage - without latching
Legend
1-
Threshold
2-
Hysteresis
3-
Overvoltage function relay
4-
Undervoltage underload function relay
5-
Controlled signal
6-
Delay on threshold crossing (Tt)
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. Once the voltage rises above the threshold value plus the hysteresis, the relay closes instantaneously.

MUS - Under and overvoltage - with latching

MUS - Under and overvoltage - with latching
Legend
1-
Threshold
2-
Hysteresis
3-
Overvoltage function relay
4-
Undervoltage function relay
5-
Controlled signal
5-
Delay on threshold crossing (Tt)
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 - Under and overvoltage controller in window mode

MUSF - Under and overvoltage controller in window mode
Legend
1-
High threshold
2-
Low threshold
3-
Hysteresis
4-
Controlled signal
5-
Delay on threshold crossing (Tt)
6-
Relay
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.

MUS - MUSF

MUS - MUSF

MUS - MUSF

MUS - MUSF
Legend
1-
1 A fast-blow fuse or cut-out
PH RMC2 MUS 80ACDC
PH RMC2 MUSF 80ACDC

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