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ZY120 6-20kVA (11) User Manual EN rev.04.doc
1. The nominal DC voltage of external battery pack is 192VDC. Each battery pack consists of
16 pieces of 12V maintenance free batteries in series. To achieve longer backup time, it is
possible to connect multi-battery packs, but the principle of “same voltage, same type”
should be strictly followed.
2. For UPS 20K-KS, select the UL1015 6AWG(25mm
2
) wire or other insulated wire which
complies with UL Standard for the UPS battery wirings. The procedure of installing battery
bank should be complied with strictly. Otherwise you may encounter the hazardous of
electric shock.
1) A DC breaker must be connected between the battery pack and the UPS. The
capacity of breaker must be not less than the data specified in the general
specification.
2) Set the battery pack breaker in “OFF” position and connect the 16 pieces of batteries
in series.
3) You must connect the external battery cable to the battery first, if you connect the
cable to the UPS first, you may encounter the hazardous of electric shock. The
positive pole of the battery is connected to the UPS with red wire; the negative pole
of the battery is connected to the UPS with black wire; the green and yellow ribbon
wire is connected to the ground of the battery cabinet.
3. To complete the connection of the external battery cable into the UPS. Do not attempt to
connect any loads to the UPS now. You should connect the input power wire to the right
position first. And then set the breaker of the battery pack in the “ON” position. After that
set the input breaker in the “ON” position. The UPS begins to charge the battery packs at
the time.
5.4 Parallel operation
1. Brief introduction
As long as the UPS is equipped with parallel cables, up to 3 UPSs can be connected in
parallel to realize output power sharing and power redundancy.
2. Parallel installation
1) Users need to opt two standard 15-pin communication cables which length is
appropriate to be less than 3m. shown as fig.5:
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