Contrel ELR-4C Instruction Manual

Contrel ELR-4C is an Earth leakage relay with 4 inputs that enables multicanal measurement, with a detection type A, which means that the device is sensitive to both sinusoidal alternating residual currents as well as pulsating direct residual currents. The device is a modular type, with 3 modules for DIN rail. It has a green LED to indicate power and a backlit LCD display (green, yellow, red) and 4 LEDs for trip indication. The ELR-4C comes with an external residual current transformer (CT-1 series), hence it can measure True RMS (TRMS) with 3rd harmonic filtering, and display the values of the differential current, the maximum values, THD, and crest factor.

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Contrel ELR-4C Instruction Manual | Manualzz

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