2-
3
2-4 Bypass Mode (Single Installation)
CB1
CB2
CB3
CB4
CB5
LOAD
MAIN
RESERVE
STS
Fig. 2-4 Bypass Mode Block Diagram
Under maintenance or repair service condition, you will need to cut off the UPS power but
not the power to your equipment. Make sure the reserve power exists first, then manually
switch UPS into bypass mode. At this time, there is no power inside UPS. The servic
e
engineer can do the maintenance or repair job safely but keep your equipment supplied.
(Refer to Fig. 2-4)