First Time Power-Up and Start-Up
4
4-2 | UR11
6. Observe the existence of faults/alarms at the relay outputs and LEDs. In case of any fault or alarm, verify
the possible causes and solve the problem.
7. Check the input current of each rectifier unit with a current meter. The current must be smaller than 5 % the
ND rated current as the rectifier is under no load.
8. De-energize the panel. Then connect the inverters without load. Check the inverter connections and if the
current and voltage are according to the UR11.
9. Command the panel, perform the DC link pre-charge and close the main contactor/circuit breaker.
10. Enable inverters output and check the input current of each phase of the UR11: the maximum current
unbalance of each phase must be 5 %.
