1
5
8
3
6
10
2
9
4
7
11
12
13
1
5
A
A
2
3
4
Main
Input
O
OFF
ON
I
ON
I
ON
I
Front Panel
Back Panel
Q2
Q4
Main
Input
O
OFF
ON
I
ON
I
O
OFF
Front Panel
Back Panel
Q3
Main
Input
ON
I
ON
I
O
OFF
ON
I
Front Panel
Back Panel
Q1
27
8 – Start-Up, Shutdown and Bypass
(continued)
8-11 Switching from Manual Bypass to Normal Mode (Parallel UPS)
If the UPS systems have external battery cabinets connected,
•
switch on the external battery cabinet circuit breaker switch
A
of
each battery pack.
Switch on the bypass input circuit breaker switch
•
Q2
and the
output circuit breaker switch
Q4
of each UPS system.
Confirm that the LCD screens of both UPS systems read “ON
•
MANUAL BYPASS”, then switch off the manual bypass circuit
breaker switch
Q3
of each UPS system. The LCD screen will read
“ON AUTO BYPASS”.
Switch on the main input circuit breaker switch
•
Q1
of each UPS
system.
Press the ON button
•
A
of the first UPS systems for 3 seconds
(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)
mode at the same time.
1
2
3
4
5
