ELR-51 / ELR-m51 ELR-52 / ELR-m52

ELR-51 / ELR-m51ELR-52 / ELR-m52EARTH LEAKAGE RELAY - FLUSH MOUNTING VERSION DIN 96x96 mmWITH SELF-POWER FOR SMALL NETWORKS INTERRUPTION, FAIL SAFE, ETC.GENERALITYThe ELR-5 are new series, which comes to enlarge the range of ELR’s.Mentioned relays bring some interesting variables, regarding to thenormal characteristics , already available in the precedent families.a. Working with Fail Safe. This is to say, the end relay is de-energized byleakage or lack of supply, but due to a particular time circuit on the endrelays, it avoids the tripping of the MCCB, when returning of the Aux,.Supply, working with shunt trip coils.b. Self- supply during 2 sec., In case of a lack of supply. This is animportant characteristic, since the relay is capable to overcome theproblems related to the classic Voltage holes, whilst the automatic reclosingoperations of the lines.c. Trial current during Test, depending on the tripping current set atthe relay. The trial current value is automatically set , between 100 and160% of the I∆N set on the relay. This allows a real simulation of theleakage current, to which the relay should trip, permitting the individualisationof eventual anomalies of internal circuits or connections.MODELSELR-51 / ELR-m51ELR-52 / ELR-m52OPTIONSFTbuilt-in filter of third harmonictropicalisation110 - 230 - 400 Vacd. Continuous control of the efficiency on the internal circuits, by trippingwhen whatever anomaly of the electrical parameters is detected.e. Continuous control on the Toroidal-Relay circuit. The interruption ofthe circuit makes the ELR to trip, since there is no longer protection onthe line.f. Insensitivity to the pulse currents with dc component.LEGEND345 861 Micro switch for time delay setting.2 Micro switch for tripping current setting.3 Push button for Test.1relè ELRm-5234 Push button for manual reset.5 Signalling lamp for Aux. Supply presence (Green LED)6 Signalling lamp for relay tripped (Red LED)247 Mechanical Signalling for relay tripped, (only for ELR-m51 ELR-m52)8Signalling lamp for overcoming the alarm threshold (Red LED),(only for ELR-52 ELR-m52)contrel7