MWA

KEY FEATURES

  • Control of 3-phase networks : phase sequence, phase failure, imbalance (asymmetry), over and undervoltage (MWU)
  • Range includes mono-function product and multi-function product
  • Multi-voltage from 3 x 208 to 3 x 480 V ∿
  • Controls its own supply voltage
  • True RMS measurement
  • LED status indication
FunctionsNominal voltage (V)OutputCode
Phase sequence, phase failure imbalance (asymmetry)3 x 208 →3 x 480 V ∿1 single pole changeover relay84873024

Specifications


Supply voltage Un 3 x 208 →3 x 480 V ∿ *
Voltage supply tolerance -12 % / +10 %
Operating range 183 →528 V ∿
∿ supply voltage frequency 50 / 60 Hz ±10 %
Galvanic isolation of power supply/measurement No
Power consumption at Un 22 VA in 400 V∿, 50 Hz
Immunity from micro power cuts 10 ms

Measurement ranges 183 →528 V ∿
Selection of phase-phase nominal voltage Un 208 - 220 - 380 - 400 - 415 - 440 - 480 V
Frequency of measured signal 50 →60 Hz ± 10 %
Max. measuring cycle time 150 ms/True RMS measurement
Voltage threshold adjustment 2 →20 % of selected Un (-2 to -12 % across the 3 x 208 V ∿ range / -2 to -17 % across the 3 x 220 V ∿ range / 2 to 10 % across the 3 x 480 V ∿ range)
Voltage threshold hysteresis 2 % of fixed Un
Asymmetry threshold hysteresis 2 % of fixed Un
Asymmetry threshold adjustment 5 to 15 % of selected Un
Display precision ± 3 % of the displayed value
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
Maximum regeneration (phase failure) 70 %

Delay on thresold crossing 0.1 to 10 s 0 +10 %
Repetition accuracy with constant parameters ± 3 %
Reset time 1500 ms
Delay on pick-up ≤ 650 ms
Alarm on delay time max. < 200 ms

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 60664-1 400 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 AC 50 Hz 1 min
Insulation resistance (IEC/EN 60664-1) > 500 MΩ / 500 V ⎓

Display power supply Green LED
Display relay Yellow LED - This LED flashes during the threshold delay
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 : IP20 Casing : IP30
Weight 80 g
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 Nm →1 / 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 50178
Electromagnetic compatibility (EMC) IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4
Certifications CE, UL, CSA, GL
Conformity with environmental directives RoHS

* 3-phase mains with earth

Technical sketches

MWA - Failure, phase sequence and asymmetry

MWA - Failure, phase sequence and asymmetry
Legend
1-
Phase L1
2-
Phase L2
3-
Phase L3
4-
Asymmetry threshold
5-
Hysteresis
6-
Relay
7-
Delay on threshold crossing (Tt)

MWG - MWA - MWU - MWUA

MWG - MWA - MWU - MWUA

MWG - MWA - MWU - MWUA

MWG - MWA - MWU - MWUA
Legend
1-
100 mA fast-blow fuse
PH RMC2 MWA

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