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3.2.3 RETURN TO NORMAL SOURCE SIDE
Manually actuate switch to return Window “A” to the “ON” position.
3.3 VOLTAGE
CHECKS
3.3.1 UTILITY VOLTAGE CHECKS
1. Turn ON the UTILITY power supply to the transfer switch with
whatever means provided (such as the UTILITY maim line circuit
breaker).
PROCEED WITH CAUTION. THE TRANSFER
SWITCH IS NOW ELECTRICALLY HOT.
CONTACT WITH LIVE TERMINALS RESULTS
IN EXTREMELY HAZARDOUS AND POSSIBLY
FATAL ELECTRICAL SHOCK.
2. With an accurate AC voltmeter, check for correct voltage.
Measure across ATS terminal lugs N1 and N2; N1 to NEUTRAL
and N2 to NEUTRAL.
FAILURE TO TURN OFF THE UTILITY SUPPLY
BEFORE WORKING ON THE UTILITY CON-
NECTIONS OF THE ATS WILL RESULT IN
EXTREMELY DANGEROUS AND POSSIBLY
FATAL ELECTRICAL SHOCK.
3.
When certain that UTILITY supply voltage is correct and compat-
ible with transfer switch ratings, turn OFF the UTILITY supply to
the transfer switch.
3.3.2 GENERATOR VOLTAGE CHECKS
1. On the generator panel, select the MANUAL mode of operation.
The generator should crank and start.
2. Let the generator stabilize and warm up at no-load for at least
five minutes.
3. Set the generator's main circuit breaker (CB1) to its ON or
CLOSED position.
PROCEED WITH CAUTION. GENERATOR
OUTPUT VOLTAGE IS NOW BEING DELIVERED
TO TRANSFER SWITCH TERMINALS.
CONTACT WITH LIVE TERMINALS RESULTS
IN EXTREMELY DANGEROUS AND POSSIBLY
FATAL ELECTRICAL SHOCK.
4. With an accurate AC voltmeter and frequency meter, check the
no-load, voltage and frequency.
Measure across ATS terminal lugs E1 to E2; E1 to NEUTRAL
and E2 to NEUTRAL.
a. Frequency
..........................................60-62
Hz
b. Terminals E1 to E2 .............................240-246 VAC
c. Terminals E1 to NEUTRAL ..................120-123 VAC
d. Terminals E2 to NEUTRAL ..................120-123 VAC
Operation
Figure 3.1 — Actuating Transfer Switch
Содержание RTSR600A3
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