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1. If the 15 kVA/20 kVA UPS parallel system does not share battery packs, the cable
connection methods for each UPS and battery pack in the parallel system are the same as
those in a single 15 kVA/20 kVA UPS system.
2. If the 15 kVA/20 kVA UPS parallel system shares battery packs, refer to the cable
connection methods shown in the following figure. A 15 kVA/20 kVA UPS with long backup
time requires serial connection of two battery packs in each group. A maximum of four
groups with eight battery packs can be connected in parallel. If the 15 kVA/20 kVA UPS
with long backup time connects to more than two battery packs, connect the battery packs
in parallel and then to the UPS battery input port. Connect battery packs 1 and 2 in series,
battery packs 3 and 4 in series, battery packs 5 and 6 in series, and battery packs 7 and 8 in
series. Connect battery packs 1, 3, 5, and 7 in parallel and battery packs 2, 4, 6, and 8 in
parallel.
3. For more information, see the
ESS-240V12-(9AhBPVBA, 7AhBPVBA) Quick Installation
Guide
.
External Battery Packs
Scenario 2
Battery pack 1 Battery pack 2
Battery pack 3 Battery pack 4
Battery pack 5 Battery pack 6
Battery pack 7 Battery pack 8
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