Cutler-Hammer HWT-500, Инструкция по эксплуатации

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I.B. 35-557
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CAL OR CHL PHASING RELAY OVERVOLTAGE CLOSE TEST
Before commencing work, refer to the Safety Information.
CAUTION
IF YOU REQUIRE RELAY CONTACT INDICATION THROUGH THE TEST SET’S RED AND
GREEN INDICATING LAMPS YOU MUST ISOLATE THE TYPE CAL OR CHL “COMMON AND
CLOSE” LEADS. THESE LEADS ARE TYPICALLY IDENTIFIED ON A TYPE MG-8 OR MG-9 AS:
COMMON, AS WIRE #6 AND CLOSE, AS WIRE #6A. REMOVE THESE LEADS FROM THE
RELAY TERMINAL STRIP.
THE HWT-500 LEAD MARKED “COMM” IS PLACED ON THE RELAY TERMINAL WHERE WIRE #6
WAS ATTACHED; LEAD MARKED “RED” IS PLACED ON THE RELAY TERMINAL WHERE WIRE
#6A WAS ATTACHED.
DO NOT USE THE LEADS MARKED “COMM-RED-GREEN” ON ENERGIZED CIRCUITS.
ENERGIZING THESE LEADS MAY DAMAGE THE TEST SET.
Switch Positions
Network protector open, breaker does not have to be in the automatic mode.
FUNCTION Switch – “RELAY” position
I & PV Switch – PVA position
Supp VM Switch – CA position
PHASE switch –60 position
Single PH Test Switch – OFF
VARIAC – zero position
PHASE volt switch – ON position
SUPPLY Switch – 216 or 480 position depending on network system voltage
By rotating the VARIAC you can increase the overvoltage phasing value to the desired overvoltage
close value. The CAL or CHL setting may be changed from zero to 1.0 volts leading by varying the
tension on the control spring. This adjustment is made through the control spring adjustment shaft.
Adjustment should be made until the red indicator light is illuminated. It is important not to decrease
the spring tension to the point where the contacts will not positively close when the relay is de-
energized.
The standard factory close characteristic setting angle for the CAL or CHL is –5 degrees.