IB01602016E
For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2014
Page
17
O & M Manual for the RLC1
Automatic Transfer Switch
SECTION 5: FUNCTIONAL TESTING
5.1 Preliminary Checks
Step 1:
Check all loads connected to the ATS to ensure that they
are ready to be energized.
5.2 Energize the Switch
Step 1:
Close the upstream utility power source breaker or switch
to connect the ATS to the utility power source voltage.
Step 2:
If the ATS unit is not already in the UTILITY position, the
solenoid will engage and the contactor will automatically
switch to the UTILITY position.
Step 3:
Using a voltmeter, measure the line-to-line and the line-to-
neutral voltages across the utility line terminals to ensure
the utility voltage is correct.
Step 4:
Position the generator control selector switch, located on
the standby generator, to the AUTOSTART position. (It
may also be labeled REMOTE START.)
Step 5:
Close the upstream generator power source breaker or
switch to connect the ATS to the generator power supply
source.
5.3 Operational Checks
Step 1:
Open the upstream utility breaker
originally closed in Step 1 of Section 5.2.
Step 2:
After a time delay, the standby generator engine will
start.
Step 3:
The ATS Time Delay Normal (Utility) to Emergency (Gen-
erator) (TDNE) will begin to time after the generator
engine begins to run. After time out, the solenoid will
engage and the contactor will automatically switch from
the UTILITY to the GENERATOR position.
Step 4:
Using a voltmeter, measure the line-to-line and line-to-
neutral voltages across the generator line terminals to
ensure that the generator emergency voltage is correct.
If necessary, make adjustments to the voltage regulator
on the generator according to the manufacturer’s recom-
mendations to correct any voltage deviations. The ATS
will only respond to the correct voltage from the genera-
tor power source.
Step 5:
Close the utility breaker described in Step 1 of
Section 5.2.
Step 6:
The ATS Time Delay Emergency (Generator) to Normal
(Utility) (TDEN) timer will begin timing, and the solenoid
will engage and automatically switch from the GENERA-
TOR to the UTILITY position and the generator will shut
down.
5.4 Manual Operation
WARNING
YOU ARE READY TO ENERGIZE THE EQUIPMENT. VOLTAGES
WITHIN THE ENCLOSURE ARE CAPABLE OF CAUSING SEVERE PER-
SONAL INJURY OR DEATH. USE EXTREME CAUTION TO AVOID
CONTACT WITH ENERGIZED EQUIPMENT.
WARNING
CONTACT WITH ENERGIZED COMPONENTS WILL CAUSE ELECTRI-
CAL SHOCK CAPABLE OF PRODUCING SEVERE PERSONAL INJURY
OR DEATH. USE EXTREME CAUTION TO AVOID CONTACT WITH
ENERGIZED COMPONENTS WHEN USING A METER FOR VOLTAGE
CHECKS.
NOTICE
THIS WILL SIMULATE AN INTERRUPTION OF THE UTILITY POWER
SOURCE.
WARNING
DO NOT ATTEMPT TO MANUALLY OPERATE THE ATS WITH THE
UTILITY OR GENERATOR AVAILABLE.
WARNING
HIGH VOLTAGES ARE PRESENT IN AND AROUND TRANSFER
SWITCH EQUIPMENT. BEFORE ATTEMPTING TO MANUALLY
TRANSFER, DISCONNECT THE LINE POWER FROM THE EQUIPMENT
BEING SERVICED BY OPENING AND LOCKING OUT, IF POSSIBLE,
THE NEXT HIGHEST DISCONNECT DEVICE. FAILURE TO FOLLOW
THIS PROCEDURE COULD CAUSE SEVERE PERSONAL INJURY AND/
OR DEATH.
ALWAYS TURN THE UTILITY POWER OFF AND TURN THE GENERA-
TOR (IF A GENERATOR) CONTROL SELECTOR SWITCH TO THE
“OFF” POSITION BEFORE ATTEMPTING A MANUAL TRANSFER.
