Earth-leakage protection relay ELR-51AS

currentACDC

ELR-51AS Residual-current protection relay. Latch relays. Events log. RS485 Modbus. TRIP memory feature. Earth differential relay with associated toroidal sensor input, measures the leakage current in an electrical installation to detect levels that could be harmful. Ideal for protection or alarm, the product offers multiple settings. 2 relay outputs (bistable) each with 1 changeover contact. RS485 & egrave; available. The non-volatile memory maintains the trip status of the relay. Introduction Range ELR Product name ELR-51AS Product type Residual current protection relay Current sensors compatibility CT-1 earth leakage current sensor Technical characteristics Application Residual current protection relay Supply voltage 110-230 VAC 50/60Hz 24/48 VAC/DC (optional) Power consumption 6 VA Display type Backlight LCD (red TRIP) Backlight LCD (yellow ALARM) Type of measurement True RMS Earth fault current internal measurement Residual earth-leakage adjustment 0,030...5 A Residual earth-leakage time delay adjustment 20...500 ms Alarm threshold setting 50...90% Earth-leakage protection class Typo A super immunized Filter 3rd harmonic filter selectable Test function Local Remote test Output relays 2 independent (latch relay) 5 A (240 VAC) Configurable normally de-energised or energised MEMORY function Non-volatile memory retains the trip status of the relay. If tripped, and the supply voltage disappeared, the ELR-51AS will remain tripped at power on, with the trip relay energized and the TRIP LED on, until reset. Display indications Green LED (power ON) Red LED (TRIP) LED OK (System healthy) Communication port RS485 (optional) Communication protocol Modbus a 4,8...