PowerWalker VFI 30000TP 3_3 BE - Manual (Page 59)

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9 Parallel systems
Parallel is only connected to identical ports for the UPS of same models and kVA rating.
1) Follow installation instructions for general installation requirements.
2)Ventilation spacing between machines should allow for service access.
3) Input wiring for each set of UPS should follow the requirements for that of single unit.
Each UPS input should be connected to the same input patch board.
4) Each UPS output wire should be connected to the output patch board, from which wires
are distributed for load as illustrated in following figure.
Remark 1: common battery pack is applicable in parallel machine mode;
Remark 2: each battery pack should be of the same model from the same manufacturer;
Remark 3: requirement of output wiring length:
When the lead from the output terminal of each set of UPS to the output patch board is less
than 20m, wire difference should be less than 20%;
When the lead from the output terminal of each set of UPS to the output patch board is lon-
ger than 20m, wire difference should be less than 10%.
Note!