UPS System Installation
4-14
Eaton 9EHD UPS (80-200 kVA, 380/400/415V) Installation and Operation Manual
Figure 4-15. Parallel UPS system connections
Figure 4-14. Parallel UPS Control Wiring
1A
1C
1B
1B
2A
2C
2B
2B
3B
3B
4B
4B
3A
3C
4A
4C
UPS 1
UPS 1
UPS 2
UPS 2
UPS 3
UPS 3
UPS 4
UPS 4
Outputs from
UPSs
Outputs from
UPSs
Bypass inputs
to UPSs
REC inputs
to UPSs
Battery
Battery
Battery
Battery
Battery
Battery
Battery
Battery
UPS 1
UPS 2
UPS 3
UPS 4
IN
OUT
IN
OUT
IN
OUT
IN
OUT
CAN BUS
CAN BUS
CAN BUS
CAN BUS
CN3
CN6
CN3
CN6
CN3
CN6
CN3
CN6
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
2
RJ-45 CABLE
RJ-45 CABLE
RJ-45 CABLE
TERMINATING
JUMPER
TERMINATING
JUMPER
BUILDING
ALARM CN9
BUILDING
ALARM CN9
BUILDING
ALARM CN9
BUILDING
ALARM CN9
PULLCHAIN
CN4
PULLCHAIN
CN4
PULLCHAIN
CN4
PULLCHAIN
CN4
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
NO
NC
COM
M
O
B
1
M
O
B
2
M
O
B
3
M
O
B
4
TIE CABINET
CUSTOMER
TERMINAL
BLOCK
CONNECTIONS
3
2
4
25
9
8
10
26
15 14
16
27
21 20
22
28
1
6
5
7
12
11
13
18
17
19
24
23
TWISTED
PAIRS
Summary of Contents for 9EHD Series
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