Options/Accessories
The following can be carried out on any UPS
13. Press | on the keyboard | |
14 Press | or | on the keyboard until |
15. Press | on the keyboard | |
16.Press 
on the keyboard
All the systems will transfer to normal operation.
Display shows
Bypass operation
:YES
Bypass operation :NO
Normal operation load power xx%
No lamps on the bypass panel lights any longer
6.2.4 Isolating One UPS for Service/Maintenance
In a redundant system, one UPS may be isolated for service/maintenance without affecting other UPSs.
1.Check that remaining UPS(s) is capable of carrying the load in the event that one UPS is isolated
2.Switch off system to be isolated for maintenance purposes by pushing green “ON” and red “OFF” buttons simultaneously
3.To disconnect battery, mains and output, open battery MCCB/fuse and set input switch (Q001) and output switch (Q002) to position “0”
With Q002 in position “0”, UPS will be operational and may be tested as a single system without affecting other parallel UPS(s).
54 | Installation Guide APC Silcon 480kW 400V UPS |