Earth-leakage protection relay ELR Series

currentDIN railflush-mount

Aktif Residual Current Protection Relays are devices that give the command to open to the circuit breaker when the leakage currents that may occur in the electrical networks are observed and approached to the limits that will threaten the system and human health. There are earth leakages in the networks due to reasons such as insufficient infrastructure, equipment failures, manufacturing errors in the systems. The earth leakages are detected from the vectorial difference of the current values coming from the phases and returning from the neutral. In order to prevent this electrical problem from causing loss of life and property, we offer a solution with our relays used together with RCR and ELR series self-toroid or external toroid (Toroidal Residual Current Transformers, Collector and Multiplexer Toroidal Current Transformers). Our Aktif RCR and ELR series residual current protection relays can limit these earth leakages in a wide range of 30 mA to 30 A. General Features; • Flush mounted and DIN rail mounted types • Options with low-pass filter unaffacted by harmonics (ELR-3C-F) • Type A and Type B (ELR-3A) versions • Options with screen (ELR-D2-V) and without screen • Real-time monitoring (ELR-D2-V) • Configurable pre-alarm indication and fail-safe operation • Wide range of sensitivities from 30mA to 3A • Delay time setting • Versions with RS485 communication (ELR-D2-V, and ELR-4C Series) • Versions with 4 completely independent channels (ELR-4C Series)