Bypass Mode - Vertiv Liebert ITA2 Installer/User Manual

1.3.3 Bypass Mode

Bypass mode supplies power to the load from the bypass source if an overload or fault occurs during
normal operation. On the front-panel display, the run indicator (green) is On, the alarm indicator
(yellow) is On, and the buzzer beeps once each second. The LCD "Current" screen displays "On Bypass."
Figure 1.6 Bypass-mode Operation
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
8
Description
Bypass input
Maintenance-byass breaker (MBB)
Bypass-input breaker (BIB)
Static switch
Rectifier input
Rectifier-input breaker (RIB)
Rectifier
Battery charger
Battery
Inverter
Automatic inverter switch
Maintenance-isolation breaker (MIB)
UPS output
Vertiv | Liebert® ITA2™ Installer/User Guide