Power Supply User Guide

Stop/Start UPS and Operating the External Service Bypass
990-4055
User Guide APC Silcon 120-160kW 400V UPS 11
NOTICE!
If battery has been disconnected, please refer to section 2.4.1 UPS start-up.
Action
1. Set the input switch (Q001) to position 1
2. Wait 5 sec. Open the front door of the UPS and
press the green ON key
3. Press on the keyboard
4. Press or on the keyboard until
5. Press on the keyboard
6. Press on the keyboard
7. Check light indication on the bypass panel
8. Set the output switch (Q002) to position 1
9. Set the bypass switch (Q003) to position 0
10. Press on the keyboard
11. Press or on the keyboard until
12. Press on the keyboard
13. Press on the keyboard
14. Press on the keyboard
15. Press on the keyboard
Display shows
Bypass operation
: NO
Bypass operation
: NO
Normal operation
load power 0%
Normal operation
load power 0%
**System OFF**
Bypass operation
: YES
Bypass operation
: YES
Lamp indication on
Bypass Panel
Green light (H002)
above the output switch
handle (Q002) lights up
Green light (H003)
above the bypass switch
handle (Q003) lights up
Only the light (H003)
above the bypass switch
handle (Q003) is now on
Display shows
All lights on the bypass
panel switched off