02/11/2015 www.crouzet.com Din Rail Mount 17.5 mm Phase Sequence & Phase Failure EMWS Part number 84903020 Control of 3-phase networks: phase sequence, total phase failure Multi-voltage from 3 x 208 to 3 x 480 V AC Controls its own supply voltage True RMS measurement LED status indication Part numbers Function Nominal voltage (V) Output Type 84903020 EMWS Phase sequence, phase failure 3x2083x480VAC 1 single pole changeover relay Specifications Supply AC supply voltage frequency 50 / 60Hz 10% Galvanic isolation of power supply/measurement No Immunity from micro power cuts 60 ms Inputs and measuring circuit Frequency of measured signal 5060Hz 10% Output Type of contacts No cadmium Max. breaking current EMWS - MWS2: 5 A AC/DC MWS: 8 A AC 250 V AC - 8 A DC 30 V DC Maximum rate 360 operations/hour at full load Operating categories acc. to IEC/EN 60947-5-1 AC12, AC13, AC14, AC15, DC12, DC13 Insulation 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 s) Dielectric strength (IEC/EN 60664-1) 2 kV AC 50Hz 1 min. General characteristics 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+50C Storage temperature IEC/EN 60068-2 -40+70C Humidity IEC/EN 60068-2-30 2 x 24 hr cycle 95% RH max. without condensation 55C Vibrations according to IEC/EN60068-2-6 10150Hz,A=0.035mm Shocks IEC/EN 60068-2-6 5 g Standards 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 Supply Supply voltage Un 3x2083x480VAC* Voltage supply tolerance -13% / +10% Operating range 183528VAC Maximum power consumption 20 VA Inputs and measuring circuit Measurement ranges 183528VAC Guaranteed phase failure detection threshold < 100 VAC Voltage threshold hysteresis > 80 VAC (voltage must be > 180 VAC) Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected02/11/2015 www.crouzet.com Display precision 10 V Maximum regeneration (phase failure) < 100 VAC Timing Alarm on delay time max. 100 ms Delay on pick-up 100 ms Output Type of output 1 single pole changeover relay Maximum breaking voltage 250 VAC/DC Max. breaking current NO: 5A 250 VAC / 5 A 30 VDC NC: 3A 250 VAC / 3 A 30 VDC Min. breaking current 10mA / 12 VDC Breaking capacity (V resistive) NO: 1,250 VA / 150 W NC: 750 VA / 90 W 5 Mechanical life (operations) 10 cycles NO 4 7.10 cycles NC Insulation Nominal insulation voltage 300 V (correspond un rseau 277/480 avec neutre ou 480 sans neutre) Insulation resistance (IEC/EN 60664-1) > 500 M/ 250 VDC / 1min General characteristicsFaul indication Yellow LED turns off Weight 63 g 72 g with unitary packing & manual operation Connecting capacity IEC/EN 60947-1 Rigid: 2 1x0.54mm (AWG20AWG11) 2 2x0,52.5mm (AWG20AWG14 Flexible with ferrules: 2 1x0,52.5mm (AWG20AWG14) 2 2x0,51.5mm (AWG20AWG16) Max. tightening torques IEC/EN 60947-1 0,60,8N.m /5,37,08 Lbf.In Vibrations according to IEC/EN60068-2-6 10150Hz,A=0.35mmpeaktopeak20xcycles,1octave/min Comments Principles Operating principle EMWS: Phase controller The relay monitors its own supply voltage. The relay controls: - correct sequencing of the three phases, - total failure of one of the three phases. When the phase sequence and voltages are correct (> 183 VAC), the output relay is closed and the yellow LED is lit. In the event of a phase sequence or total phase failure fault (detected when one of the voltages drops below 100 V), the relay opens instantly and its LED is extinguished. When the unit is powered up with a measured fault, the relay stays open. Td: Power on delay Tr: Response time after a fault has occurred R: output relay Dimensions (mm) EMWS Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected