SINGLE INPUT: Mains Input DUAL INPUT: Mains Input and Bypass Input
Figure 10 Battery mode
4.1.3. Maintenance mode (Manual bypass)
A manual bypass switch is available to ensure continuity of supply to the critical load when
the UPS is out of order or in repair and this manual bypass switch bears for equivalent rated
load.
SINGLE INPUT: Mains Input DUAL INPUT: Mains Input and Bypass Input
Figure 11 Maintenance mode (Manual bypass)
4.1.4. Bypass mode
In case the inverter is out of order, or if overload occurs, the static bypass will be activated to
transfer the load from the inverter supply to bypass supply without interruption to the critical
load. If the inverter output is not synchronized with the bypass AC source, the static switch
will perform a transfer of the load from the inverter to the bypass with power interruption to
the critical AC load. This is to avoid paralleling of unsynchronized AC sources. This
interruption is programmable but typically set to be less than an electrical cycle e.g., less
than 15ms (50Hz) or less than 13.33ms (60Hz).
To Next Page
Loading...