EMWS

KEY FEATURES

  • Control of 3-phase networks : phase sequence, total phase failure
  • Multi-voltage from 3 x 208 to 3 x 480 V ∿
  • Controls its own supply voltage
  • True RMS measurement
  • LED status indication
FunctionNominal voltage (V)OutputCode
Phase sequence, phase failure3 x 208 →3 x 480 V ∿1 single pole changeover relay84903020

Specifications


Supply voltage Un 3 x 208 →3 x 480 V∿ *
Voltage supply tolerance -13 % / +10 %
Operating range 183 →528 V∿
Maximum power consumption 20 VA

Measurement ranges 183 →528 V∿
Guaranteed phase failure detection threshold < 100 V∿
Voltage threshold hysteresis > 80 V∿ (voltage must be > 180 V∿)
Display precision ± 10 V
Maximum regeneration (phase failure) < 100 V∿

Alarm on delay time max. 100 ms
Delay on pick-up 100 ms

Type of output 1 single pole changeover relay
Maximum breaking voltage 250 V∿/⎓
Max. breaking current NO : 5A 250 V∿ / 5 A 30 V⎓ NC : 3A 250 V∿ / 3 A 30 V⎓
Min. breaking current 10 mA / 12 V⎓
Breaking capacity (V resistive) NO : 1,250 VA / 150 W NC : 750 VA / 90 W
Mechanical life (operations) 105 cycles NO 7.104 cycles NC

Nominal insulation voltage 300 V (correspond à un réseau 277/480 avec neutre ou 480 sans neutre)
Insulation resistance (IEC/EN 60664-1) > 500 MΩ / 250 V⎓ / 1min

"Fault" indication Yellow LED turns off
Weight 63 g 72 g with unitary packing & manual operation
Connecting capacity IEC/EN 60947-1 Rigid : 1 x 0.5 →4 mm2 (AWG 20 →AWG 11) 2 x 0,5 →2.5 mm2 (AWG 20 →AWG 14 Flexible with ferrules : 1 x 0,5 →2.5 mm2 (AWG 20 →AWG 14) 2 x 0,5 →1.5 mm2 (AWG 20 →AWG 16)
Max. tightening torques IEC/EN 60947-1 0,6 →0,8 N.m / 5,3 →7,08 Lbf.In
Vibrations according to IEC/EN60068-2-6 10 →150  Hz, A = 0.35 mm peak to peak 20 x cycles, 1octave / min

* 3-phase mains with earth

∿ supply voltage frequency 50 / 60 Hz ± 10 %
Galvanic isolation of power supply/measurement No
Immunity from micro power cuts 60 ms

Frequency of measured signal 50 →60 Hz ± 10 %

Type of contacts No cadmium
Max. breaking current EMWS - MWS2 : 5 A ∿/⎓ MWS : 8 A ∿ 250 V ∿ - 8 A ⎓ 30 V ⎓
Maximum rate 360 operations/hour at full load
Operating categories acc. to IEC/EN 60947-5-1 AC12, AC13, AC14, AC15, DC12, DC13

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.

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/EN 60695-2-11
Protection (IEC/EN 60529) Terminal block : IP20 Casing : IP30
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 MWS, MWS2 : CE, UL, CSA EMWS : CE, UL (cULus)
Conformity with environmental directives RoHS

Technical sketches

EMWS - Phase failure and sequence

EMWS - Phase failure and sequence

EMWS

EMWS

EMWS

EMWS
Legend
1-
2 x F1 100 mA fast-blow fuse
PH RMC2 MWS

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