Earth-leakage protection relay ELR-3B

currentACAC/DC

ELR-3B AC and/or DC leakage installations. Alarm or prealarm relay. Instantaneous display. In recent years the use of loads with power electronics has become widespread. Type B residual current protection is the only protection that safeguards people and loads against AC, DC and AC/DC leakages. Type A and AC residual current protection devices do not detect continuous residual currents, which are so common in loads such as variable speed drives, UPS's, EV chargers, photovoltaic installations, etc. Introduction Range ELR Product name ELR-3B Product type Residual current monitoring and protection relay Compatibilità gamma CTB-1 type B earth leakage transformer Technical characteristics Device application Variable speed drives Photovoltaic installations Electric vehicle charging Active Filters UPS Supply voltage 230 VAC 50/60 Hz Power consumption 6 VA Display indications Backlight LCD (red TRIP) Backlight LCD (yellow ALARM) Type of measurement TRMS Residual earth-leakage adjustment 0.1, 0.3, 0.5, 1, 3 A Residual earth-leakage time delay adjustment 0.1, 0.2, 0.3, 0.4, 0.5, 0.75, 1, 5, 10 s Protection AC type protection Type A protection Type B protection Test function Local Remote Output relays 2 (TRIP, Prealarm) 10 A (250 VAC) Configurable normally de-energised or energised Signalling Green LED (power ON) Red LED (TRIP) Red LED (Missing CT connection) Yellow LED (Prealarm) Mounting mode DIN rail 3 modules Standards IEC/EN 61010 IEC/EN 61000-6-2EN IEC/EN 61000-6-3 IEC/TR 60755 CEI EN 60947-2 Annex M Weight 260g Environment IP degree of protection IP41 front IP20 terminals Relative humidity 5...90% Operating temperature -10...+60 °C Storage temperature -20...+80 °C