26/02/2014 www.crouzet.com EWS / EWS2 phase sequence and loss of phase EWS2 Part number 84873004 Space savings, accurate measurement and optimized functions all improve the efficiency of your electrical installation. Control: You simply install your EWS phase control relay and without any adjustment you can monitor the loss or inversion of one of the phases. Safety: The EWs range enables you to choose the level of safety for your installation by using versions with 1, 2 or 3 output changeovers. Self-powered: Simple to install, EWS control relays use the controlled mains supply for their own power supply voltage. Part numbers Output relay Type 84 873 004 EWS2 2 changeovers Specifications Operating range 200500VAC Operating range 3 AC 230...440 V Frequency 50 / 60Hz +/- 1Hz Maximum consumption 25 VA Output relay 1 or 2 changeovers Type of contacts No cadmium Nominal rating 8 A Maximum breaking voltage 250 V AC Max. voltage 440 V AC Nominal breaking capacity 2000 VA Min. breaking current 10mA / 5 V 5 Electrical life (number of operations) AC 12: 10 at 8A/250 VAC Maximum rate (at full load) 360 operations / hour 7 Mechanical life (operations) 2 x 10 Pick-up delay T1 200 ms Turn-off delay T2 300 ms in the event of phase failure 2 Connection capacity - without ferrule 2 x 2,5 mm 2 1 x 4 mm 2 Connection capacity - with ferrule 2 x 1,5 mm Max. tightening torque 1 Nm (screw M3 / IEC/EN 60947-1) o -20+50 Operating temperature range ( C) 0 -30+70 Storage temperature ( C) Housing material Self-extinguishing Protection (IEC/EN 60529) - Casing IP40 Protection (IEC/EN 60529) - Term. block IP20 Dielectric strength (IEC/EN 60255-5) 2,5 KV / 1 mn / 1mA / 50Hz Insulation coordination (IEC/EN 60664-1) Overvoltage category III, degree of pollution 3 Weight (g) 110 Principles Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected26/02/2014 www.crouzet.com o Legend N Phase L1 Phase L2 Phase L3 Relay Dimensions (mm) EWS / EWS2 Connections EWS2 Connections EWS Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected