UPS for 400 Vac Grid, Installation Guide, doc. rel. 3.0
89
The switches are now positioned as shown in Table 12 below.
Table 12: Position of the CBs in maintenance Bypass mode
Battery box input
(on battery box)
Rectifier ac input
(CB 2)
Bypass ac input
(CB 3)
UPS AC output
(CB 5)
Maintenance bypass
(CB 6)
OFF
OFF
OFF
OFF
ON
Verify 0V across all terminals in the system.
The system is now in maintenance Bypass mode and can now be safely
serviced.