7 – Operating Modes
1
7-5 Online Mode (Parallel UPS)
Parallel redundancy (1+1) provides UPS system redundancy or
2
increased total capacity. Under parallel redundancy, the total load is
shared by two UPS systems. If one of the UPS systems malfunctions,
the total connected equipment load is supported by the remaining UPS
system. If the total load exceeds the capacity of the remaining UPS
system, it will switch to auto bypass mode.
3
4
5
7-6 Battery Backup Mode (Parallel UPS)
6
Similar to on battery backup mode for a single UPS system
7-2), except the total connected equipment load is shared by the parallel
(1+1) UPS systems.
7
8
9
10
7-7 Auto Bypass Mode (Parallel UPS)
Similar to auto bypass mode for a single UPS system
except with parallel (1+1) UPS systems.
11
12
13
200803004 93-2793 SU80k manual 4C.indd E18
200803004 93-2793 SU80k manual 4C.indd E18
(continued)
MAIN
MAIN
(Section
MAIN
MAIN
(Section
7-3),
MAIN
MAIN
18
CB3
CB2
CB1
XFMR
STS
CB5
CB3
CB2
CB1
XFMR
STS
CB5
CB3
CB2
CB1
XFMR
STS
CB5
CB3
CB2
CB1
XFMR
STS
CB5
CB3
CB2
CB1
XFMR
STS
CB5
CB3
CB2
CB1
XFMR
STS
CB5
CB4
XFMR
UPS1
LOAD
CB4
XFMR
UPS2
CB4
XFMR
UPS1
LOAD
CB4
XFMR
UPS2
CB4
XFMR
UPS1
LOAD
CB4
XFMR
UPS2
6/16/2008 1:43:27 PM
6/16/2008 1:43:27 PM