Figure 4-20: Principle Of Paralleled Ups Systems (300/600 Kw) - Eaton 93PR Installation And Operation Manual

CUSTO MER
TERMINAL
BLOCK
CONNECTIONS
Bypass inputs
1A
to UPSs
2A
3A
4A

Figure 4-20: Principle of Paralleled UPS Systems (300/600 kW)

74
Parallel CAN
Parallel Connector Parallel Connector
UP S 1 UPS 2
BUILDING
BUILDING
PULLCHAIN
ALARM ALARM
1 1 2 2 1 2 1 2
3 2 4 25 9 8 10
1 6 7
M M
NO NC NO NC NO NC
O O
COM B COM COM B
1 5 2
UPS paralleling wiring diagram – with parallel tie cabinet
Parallel CAN
Parallel Connector Parallel Connector
UP S 1 UPS 2
PULLCHAIN
PULLCHAIN
1 2 1
UPS paralleling wiring diagram – without parallel tie cabinet
UPS 1
Battery
UPS 2
Battery
UPS 3
Outputs from
1B UPSs
2B
Battery
UPS 4
3B
4B
Battery
Parallel UPS system connections
Parallel CAN Parallel CAN
Parallel Connector
UPS 3
BUILDING
PULLCHAIN PULLCHAIN
ALARM
1 2 1 2 1 2
26 15 14 16 27 21 20
1 2 13 18
M
NO NC NO NC NO NC
O
COM COM B COM COM
11 3 17
TIE CABINET
Parallel CAN Parallel CAN
Parallel Connector
UPS 3
PULLCHAIN
2 1 2
REC inputs
1C
to UPSs
2C
3C
4C
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Parallel Connector
UPS4
BUILDING
PULLCHAIN
ALARM
1 2 1 2
TWISTED
PAIRS
22 28
19 24
M
NO NC NO NC
O
B COM
4 23
Parallel Connector
UPS4
PULLCHAIN
1 2
UPS 1
Battery
UPS 2
Battery
UPS 3
1C
2C
Battery
UPS 4
3C
4C
Battery
Outputs from
UPSs