To supply solutions to monitoring requirements of "Non -Standard" high voltage AC and DC networks, APCS have released two new Signal Powered modules ( "Signal Power" means that the unit takes it power directly from the network being monitored).
Voltage Presence relay VPR271
Designed for monitoring of 3-phase systems up to 800V phase/phase. The VPR271 has two fail safe relay outputs, AL1 and AL2.
AL1 is energised with any one phase present
AL2 will de-energise if any one of the three phases fail If all three phases are present (healthy status) both relays are energised.
Each phase is indicated by front mounted LED. >- High Voltage Relay HVR272
The function of the HVR272 is to monitor AC and DC voltage networks up to 700VDC
Two relays are energised by the voltage to be monitored.
The trip point and dead band can be adjusted by multi-turn trim potentiometers mounted on front.
Trip status is indicated by front mounted LED
