Relay in 3-phase main monitors correct phase sequence and failure of any phase. Green LED is permanently ON and indicates presence of power supply voltage. In case of phase failure or exceeding voltage level red LED fl ashes and relay breaks. When changing to faulty state, time delay applies. Time delay setting is set by a potentiometer on front panel of the device. In case of incorrect phase sequence red LED shines permanently and relay is open. In case supply voltage falls below 60% Un (OFF lower level) relay immediately opens with no delay and faulty state is indicated by red LED.
HRN-55 - thanks to supply form all phases, this relay is able to stay operational also if one phase is out.
HRN-55N - supply L1-N, means that relay monitor also failure in neutral wire.
Replacement for HRN-51 and HRN -51N
Fixed delay T1 (500ms) and adjustable delay T2 (0.5…10s)
Faulty state is indicated by LED and output contact of relay is OFF.
Output contact: 1 x changeover 16A / 250V AC1
1-MODULE, DIN rail mounting
Replaced HRN51N/HRN-51N
