Cutler-Hammer HWT-500, Инструкция по эксплуатации

Страница: 30 / 45

I.B. 35-557
30 of 45
CAN OR CHN MASTER RELAY REVERE CURRENT TRIP TEST
Before commencing work, refer to the Safety Information
Switch Positions
Network protector closed, breaker does not have to be in the automatic mode.
FUNCTION Switch – “RELAY” position
I & PV Switch – AI position
Supp VM Switch – CA position
PHASE switch –180 position
Single PH Test Switch – OFF
VARIAC – zero position
SUPPLY Switch – 216 or 480 position depending on network system voltage
By rotating the VARIAC you can increase the reverse current value to the desired reverse current
value. The green indicator lamp will illuminate when the CAN or CHN trip contact makes. The trip
adjustment on the type CAN or CHN relay is accomplished by turning the mechanical restraint cap.
NOTE – On network protectors equipped with the delayed-sensitive trip, type PYC16 relay, the time
delay relay is energized and the timing cycle starts when the CAN or CHN trip contact makes. Refer
to the time delay relay type PYC16 trip test.