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8 – Start-Up, Shutdown and Bypass
1
8-10 Manual Bypass Procedure (Parallel UPS)
•
If the UPS systems have external battery cabinets connected,
5
2
switch off the external battery cabinet circuit breaker switch
each battery pack.
3
•
6
In this mode, only the output circuit breaker switch
terminal block
B
contain hazardous voltage, allowing qualified
4
service personnel to perform maintenance or repair. Note:
Qualified service personnel may prefer to de-energize the UPS
systems completely, depending on local codes and the nature of the
maintenance or repair.
5
6
8-11 Switching from Manual Bypass to Normal Mode (Parallel UPS)
•
If the UPS systems have external battery cabinets connected,
1
switch on the external battery cabinet circuit breaker switch
each battery pack.
7
8
•
2
Switch on the bypass input circuit breaker switch
circuit breaker switch
B
9
•
Confirm that the LCD screens of both UPS systems read "ON
3
MANUAL BYPASS", then switch off the manual bypass circuit
10
breaker switch
A
of each UPS system. The LCD screen will read
"ON AUTO BYPASS".
•
4
Switch on the main input circuit breaker switch
system.
•
Press the ON button
5
A
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(until you hear a beep), then release the button. Press the ON
button for the second UPS system for 3 seconds (until you hear
a beep), then release the button. When the inverter of each UPS
system is operating normally, they will switch to online (normal)
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mode at the same time.
ON
I
13
Main
Input
A
Front Panel
4
200803004 93-2793 SU80k manual 4C.indd E26
200803004 93-2793 SU80k manual 4C.indd E26
All manuals and user guides at all-guides.com
A
and the
and the output
A
of each UPS system.
A
of each UPS
of the first UPS systems for 3 seconds
O
OFF
ON
ON
I
I
Back Panel
(continued)
(continued)
A
of
A
5
O
OFF
ON
I
Back Panel
6
A
of
A
1
O
OFF
Main
Input
Front Panel
2
O
OFF
Main
Input
Front Panel
3
5
26
B
O
OFF
A
ON
ON
ON
I
I
I
A
B
Back Panel
O
OFF
ON
ON
I
I
A
Back Panel
A
6/16/2008 1:43:50 PM
6/16/2008 1:43:50 PM
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