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25. Turn Unit 2’s output switch ON (vertical position).
a. Verify that output current in each phase is less than 10A.
b. Verify that DC voltages are not more than ±445V.
26. For each remaining unit (Unit 3 through Unit N):
a. Turn the unit’s output switch ON (vertical position).
b. Verify that output current in each phase is less than 10A.
c. Verify that DC voltages are not more than ±445V.
27. Switch off all units using the key on each unit’s control panel.
Turn off all the circuit breakers.
Replace the back covers of each unit.
28. Operate the units.
29. Activate the load and verify that load is being shared properly between all units (the difference
between currents should be less than 20A).
30. Check the system in Mains Power failure mode:
Turn off the ac input (inverter) circuit breaker on all units and verify that all units are working
properly and that current is being shared properly.
31. Return the ac input (inverter) circuit breakers to the ON position. Verify that the system is working
properly.
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