38
B
YPASS OPERATION CHECK
1. Connect an output load so that each unit indicates an output power greater than 5%.
2. Run the bypass command: from the main menu go to the COMMANDS section and then to LOAD ON BYPASS.
3. Wait a few seconds and verify that all UPSs switch onto the bypass line.
4. Verify through the display that power distribution between the various units is within ±5%.
During bypass operation the load distribution between the UPSs depends on the length of the cables only, so the rules
on the length of connections as indicated in the connections section must be followed.
If the imbalance between the various units is greater, the total power of the system has to be derated. For example if the imbalance
in bypass is 20% the maximum usable power of the system will be 90% of the rated total.
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