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8-4 Battery Start-Up Procedure (Single UPS—SUS)
Note: The battery must be at least partially charged for this operation to succeed.
• With the external battery cabinet connected, switch on the circuit
breaker of the external battery cabinet.
• Confirm that the main input circuit breaker switch
Q1
, bypass
input circuit breaker switch
Q2
, manual bypass circuit breaker
switch
Q3
and output circuit breaker switch
Q4
are all off.
• Press the ON button
A
for 3 seconds (until you hear a beep), then
release the button. The inverter will activate and use stored DC
battery power to supply AC power to the output circuit breaker.
The “BATTERY” LED
B
will illuminate.
Warning: The output voltage and frequency must be set to the
desired values PRIOR to applying UPS inverter output to the
connected load (See Section 10-5-1).
• After confirming output voltage and frequency are correct, turn on
output circuit breaker
Q4
to supply battery-derived power to the
connected equipment.
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8 – Start-Up, Shutdown and Bypass (continued)
8-5 Manual Bypass Procedure (Single UPS—SUS)
Warning: Placing the UPS system in manual bypass will disable the inverter and power all loads from the manual bypass source path, but
the UPS system will still be energized. Before performing maintenance or repair on the UPS system, shut down and de-energize the UPS
system completely by following the steps in Section 8-5. Although connected equipment loads will be powered through the bypass power
path, they will not receive battery backup in the event of a utility power failure or out limits event.
To transfer the connected equipment load to Manual Bypass from NORMAL mode:
• With the UPS in NORMAL mode (green LED
A
ON, LCD
displays “Load Protected – On Line Mode”), stop the inverter by
pressing and holding the red OFF (“O”) button
B
until the UPS
beeps, then release the button and answer “YES” to the question
“Transfer to Bypass Mode?”. The UPS should transfer to Bypass.
• Confirm the UPS is in BYPASS mode (amber Bypass LED
C
is
ON; LCD displays “Load Unprotected – On Auto Bypass”). Do
not proceed if it is not in BYPASS mode.
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12-212-93-3141.indb 22 12/28/2012 11:17:32 AM