Options/Accessories
990-4045a
Installation Guide APC Silcon 240-320kW 400V UPS 45
6.1.3 Operating The External Service Bypass Switch
Action
1. Press on the keyboard
2. Press or on the keyboard until
3. Press on the keyboard
4. Press on the keyboard
5. Check lamp indication on the Service Bypass Panel
6. Turn the external bypass switch (Q003)
to position ”1“
7. Turn the output switch (Q002) to position ”0“
8. Open the front door and press both the green
”ON“ and the red ”OFF“ keys simultaneously
The acoustic alarm sounds for 30 sec.*
9. Turn the input switch to position ”0“
The red alarm LED below the display lights
and the acoustic alarm sounds for 30 sec.
* The acoustic alarm can be reset by the key
Bypass operation
:NO
Bypass operation
:YES
Display shows
Lamp indication
on Service Bypass Panel
The Green lamp (H003)
above the bypass switch
handle (Q003) lights
The Green lamp (H002)
above the output switch
handle (Q002) lights
Only the lamp (H002)
above the output switch
handle (Q002) lights now
** System OFF **
Display shows
EMERGENCY (UPS not alive)
1. Turn the input switch (Q001) to position ”0“.
2. Turn the output switch (Q002) to position ”0“.
3. Change any released system input fuse(s).
4. Turn the bypass switch (Q003) to position ”1“.