Additional information
Task
Make sure that the main switch of the Auxiliary service
transformer is opened.
Contact your local grid and MV
authority.
Make sure that all the local regulations, applicable laws, and
standard are met.
Applicable for C module MV
switchgear
Turn the earthing switch on the grid side of the MV switchgear
to the “not earthed” position.
Contact your local grid and MV
authority. Only authorized personnel
are permitted to make the connections.
Ask the power grid owner to connect the station to the power
grid. Wait until the station is connected to the power grid
before proceeding.
Applicable for C module MV
switchgear.
Turn the disconnecting switch on the grid side of the MV
switchgear to Closed position.
Applicable for V module MV
switchgear
Turn the earthing switch on the MV Transformer side of the
MV switchgear to the “not earthed” position.
Applicable for V module MV
Switchgear
Turn the disconnecting switch on the MV transformer side
of the MV switchgear to the closed position.
Applicable for V module MV
switchgear
Close the main breaker of the MV transformer.
Make sure that the voltage level on the low voltage side of
the MV transformer is correct. Adjust the MV transformer tap
settings if needed.
See MV tansformer documentation
Run the MV transformer with no load for several hours.
See MV transformer documentation
Check the MV transformer for any malfunctions. Observe
the temperature, listen to audible changes, etc.
Connecting the AC cabinet
De-energize the MV transformer.
Also de-energize (open) all other
switches, disconnectors and breakers
of the Auxiliary service board.
Close the main switch of the Auxiliary service transformer.
Energize the MV transformer.
PVS-100:400V
Check that the incoming voltage level is equal to inverter
voltage AC output.
PVS-120: 480V
Close the Auxiliary service transformer primary breaker.
Must be 230/400 V ±10%
Check that the Auxiliary service transformer secondary
winding voltage level is 230/400 V.
Close the Auxiliary service transformer secondary breaker.
Maintain "Closed" condition for the
auxiliary service lines with load. Only
open switches/breakers with loads.
Close the auxiliary breakers one at a time. After closing each
breaker, check the voltage values.
Inverters must be de-energized.
Close the fuse base switches of the inverter inputs one at a
time. Check each fuse base for voltage values directly in the
inverter input, before opening the next fuse base.
See inverter manual.
See inverter manual.
Follow the inverter commissioning procedure.
If any other optional equipment is integrated into the MVCS such as UPS, communication
equipment and others, then check the equipment’s applicable documentation before executing
the start-up procedure.
Start-up and operation 51
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