VAR8 and Variants - Product Description
Issue: 02 complete, approved
Page 36 of 54
5.3 Fault Relay
The unit features a fault relay, for indicating system
health to external equipment. The relay is normally
energised to indicate system health, and de-
energised in the event of system fault. If power is
removed then a fault is indicated.
Figure 12 Fault Relay Wiring
FAULT RELAY
(SHOWN DE-ENERGISED)
CLOSED WHEN HEALTHY
(RELAY ENERGISED)
NC NO
COM
RELAY NC
RELAY NO
RELAY COM
CLOSED WHEN FAULTY
(RELAY DE-ENERGISED)
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