Close To Normal Source Side; Voltage Checks - Generac Power Systems HTS Owner's Manual

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Figure 4-5. Closure to Emergency
Source Side
4.2.2.3—Close to Normal Source Side
Before proceeding, verify the position of the switch by
observing window "A" and window "B". If window "A"
reads ON the ATS is closed in the utility position, with the
load connected to the normal source. It is not necessary
to manually close in the utility position. See Figure 4-6.
If window "A" reads OFF and window "B" reads ON it will
be necessary to trip the ATS to the neutral position. See
the Trip to Neutral Position section.
With handle attached to the actuating shaft. Move man-
ual handle upward as indicated by arrow in illustration
until it stops. do not force. Confirm main contacts close to
utility source when window "A" is ON and window "B" is
OFF. Remove handle from switch.
See Figure 4-6. Attach manual handle to shaft "M."
1.
Actuate handle in direction indicated until it stops.
2.
Confirm closure to normal source by "ON" in Win-
3.
dow "A," "OFF" in Window "B."
Detach the manual handle.
4.
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Figure 4-6. Closure to Normal Source Side
Automatic Transfer Switch Owner's Manual
4.3 — Voltage Checks
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IMPORTANT: Any voltage measurements should be per-
formed with a meter that meets UL3111 safety standards,
and meets or exceeds overvoltage class CAT III.
Before performing voltage checks, verify the following:
Disconnect all loads from transfer switch until all
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voltage checks and phase rotation checks have
been completed.
Set the Maintenance Disconnect switch (inside
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transfer switch enclosure) to MANUAL.
Check the transfer switch data label for rated volt-
3.
age. Verify voltage is compatible with normal and
standby power source voltages.
Perform voltage checks as follows:
Inside the transfer switch enclosure, set the Main-
1.
tenance Disconnect switch to MANUAL.
If generator is so equipped, set the AUTO/OFF/
2.
MANUAL switch to OFF.
Check that the word "ON" is visible in Window "A,"
3.
the word "OFF" in Window "B." See "Manual Oper-
ation" on page 13 for location of "A" and "B" win-
dows.
IMPORTANT: Before proceeding, manually connect the
load to normal power supply. Window "A" must indicate
"ON," Window "B" must indicate "OFF" before proceeding.
Locate the battery disconnect connector on the
4.
outside of the transfer switch controller. Plug the
two connectors together.
NOTE: If both utility and generator sources are unavailable for
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more than 24 hours, disconnect battery by unplugging battery
disconnect leads.
Turn ON the normal (utility) power supply to the
5.
transfer switch, with whatever means provided
(such as the main line circuit breaker).
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With utility voltage available to the transfer switch,
6.
check that the switch - position utility LED on the
enclosure door is ON. If the switch - position utility
LED is OFF, turn off the utility power supply to the
Operation
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