4 4
Ultron HPH Series UPS
6.5.3 Parallel Units Wiring
NOTE:
Prior to wiring, please read
6.5.1 Precautions Prior to Wiring
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Single Input (Parallel Units)
When there is only one AC power source, parallel unit's wiring procedures are as follows.
1
Please follow steps
1
a
5
stated in section
Single Input (Single Unit)
.
2
Connect the main AC source/ output/ external battery cabinet cables to the wiring
terminal block (please refer to
Figures 6-9~6-11/ 6-15
).
NOTE:
Regarding
Figure 6-9~6-11
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TN system and a 3-pole protective device is installed between the UPS and the
utility AC power. If your utility AC power is the TT system, please install a 4-pole
protective device between the UPS and the utility AC power.
3
Use the provided parallel cable to connect the parallel ports on the parallel units.
Please see
Figure 5-2
for parallel port location.
4
Please refer to
Chapter 5 : Communication Interfaces
to set the parallel switch in
the
ON
or
OFF
position.
5
Ground the parallel UPSs.
WARNING:
1. When UPSs are paralleled, the length of each unit’s input cables/ output
cables must be equal. This ensures that the parallel UPSs can equally share
the equipment loads in bypass mode.
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otherwise, parallel functions will fail.
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1, 2 or 3) through LCD. Otherwise, UPSs can not be started.
Содержание HPH-100K
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