American Power Conversion 480kW400V User Manual
Page 15
Stop/Start UPS and Operating the External Service Bypass
990-4058
User Guide APC Silcon 480kW 400V UPS
15
Action
1. Check that the output switch (Q004) is set to position 0
2. Check that all output switches (Q002) are set to position 1
3. Set input switches (Q001) to position 1
4. Wait 10 secs.
Open the UPS front door and
press the green ON button on all systems
5. Press
on the keyboard
6. Press
or on the keyboard until
7. Press
on the keyboard
8. Press
on the keyboard
All systems switch to bypass operation
Note!
If Q002s are in position 0 off, only programmed
systems will switch to bypass
9. Set the output switch (Q004) to position 1
10. Turn the bypass switch (Q003) to position 0
The following can be carried out on any UPS
11. Press
on the keyboard
12. Press
or
on the keyboard until
13. Press
on the keyboard
14. Press
on the keyboard
All the systems will transfer to normal
operation
Display shows
Bypass operation
: NO
Bypass operation
: NO
Bypass operation
: YES
Bypass operation
**System OFF**
Bypass operation
: YES
Lamp indication on
Bypass Panel
H002 and H004 light up
Green light (H003) above
bypass switch lights up
The green lamps (H002)
and (H004) are switched
off, but (H003) is lit
until normal operation.
Display shows
No lamps on the bypass
panel are lit
Normal operation
load power 0%
Normal operation
load power 0%