7
80A/250VAC, and switches of 15KVA should withstand more than 100A/250VAC, and switches of 20KVA
should withstand more than125A/250VAC.
●Output wiring length requirements: when the distance between the load and each UPS is less than 20
meters, the length difference of cables to the load should be less than 20%; when the distance between the
load and each UPS is more than 20 meters, the length difference of cables to the load should be less than
10%.
>
Installation procedure:
① Install parallel wires. Two UPS to form an UPS parallel system , in order to ensure the reliability of the
parallel system, there is only one way to wire two UPS, use two parallel wires to connect two UPS like the
diagram showing below, connection looks like a circle. If three or more than three UPS are needed, the
connection is similar, you can refer to the diagram as below. How many UPS unit, how many parallel wires
you need.
DO NOT OPEN EXCEPT
QUALIFIED TECHNICIAN
DO NOT OPEN EXCEPT
QUALIFIED TECHNICIAN
US
B
EPO
R
S
2
32
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
ON
US
B
EPO
R
S
2
32
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
ON
US
B
INTELLIGENT SLOT
PARALLEL PORT
EPO
R
S
2
32
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
US
B
INTELLIGENT SLOT
PARALLEL PORT
EPO
R
S
2
32
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
Parallel system of two UPS wiring
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
U
SB
E
PO
R
S
232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
U
SB
E
PO
R
S
232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
U
SB
E
PO
R
S
232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
U
SB
INTELLIGENT SLOT
PARALLEL PORT
E
PO
R
S
232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
U
SB
INTELLIGENT SLOT
PARALLEL PORT
E
PO
R
S
232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
U
SB
INTELLIGENT SLOT
PARALLEL PORT
E
PO
R
S
232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LEAKAGE CURRENT
EARTH CONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
DO NOT OPEN EXCEPT
QUALIFIED TECHNICIAN
DO NOT OPEN EXCEPT
QUALIFIED TECHNICIAN
DO NOT OPEN EXCEPT
QUALIFIED TECHNICIAN
Parallel system of three UPS wiring
Caution
: For three UPS parallel system or more than three unites system type, please remove the short
pin CN3 on the parallel card as following pictures, Only keep the first unit and the last unit shot pin(CN3)
connected and remove the rest ones. Open the UPS cover, find the parallel card, it’s installed on the rear
panel. Take off the short pin CN3, then screw the cover back. It’s advisable to contact to local dealer to
operate, if you have to operate by yourself, please be sure that you have cut off all the electrical connection,
be careful the electric shocks from the UPS inside.