30
DPA 2 50 S 4 50 - 2 50 K W
O P ER AT I N G M A N UA L
The Maintenance Bypass Mode is performed by means of the Q1 MANUAL BYPASS SWITCH.
POSITION OF SWITCH
EFFECT
ON
Bypass-Switch Closed (Load supplied directly from bypass mains)
—
4.5-1
POSITION OF SWITCH
EFFECT
OFF
Bypass-Switch Open – Normal operating condition
(Load supplied by inverter)
—
4.5-2
—
4.5 Maintenance bypass
—
4.5.1: “Maintenance
bypass switch closed”
operating mode
NOTE
TO HAVE TO MOST ESSENTIAL SECURITY
LEVEL, WE RECOMMEND TO RUN THE UPS
ON NORMAL OPERATION MODE, MEANS
UPS MODE (MODE "ON-LINE”)
Once the critical load is feed by the bypass mains,
the UPS module can be isolated for maintenance
or testing
—
4.5.2: “Maintenance
bypass switch opened”
operating mode
