48 Start-up and operation
Start-up procedure for the UPS (optional)
Refer to UPS documentation and the electrical diagrams of the AC cabinet (3AES-SH-
4600-14-SP01) that are delivered with the unit.
Start-up procedure:
1. Make sure that all of the AC cabinet breakers are in the OFF or open position.
2. Make sure that there is no voltage in the AC cabinet. Obey the safety rules.
3. Obey the instructions in the UPS documentation.
Turn the earthing switch at the grid side of the
switchgear to the “not earthed” position.
Ask the power grid owner to connect the
station to the power grid. Wait until the station
has been connected to the power grid before
proceeding.
Only authorized personnel are permitted to make the
connection.
Turn the disconnecting switch at the grid side
of the switchgear to the closed position.
Turn the earthing switch at the transformer
side of the switchgear to the “not earthed”
position.
Turn the disconnecting switch at the
transformer side of the switchgear to the
closed position.
Close the main breaker of the transformer.
Make sure that the voltage level on the low
voltage side of the transformer is correct.
Adjust the transformer tap settings if needed.
WARNING! Make sure that the
transformer is de-energized before you
adjust the tap settings.
Run the transformer with no load for several
hours before you do the tasks under the
subsection Connecting the inverters to the AC
supply.
Refer to the transformer documentation.
Observe the transformer for any malfunctions.
Monitor the temperature, listen to audible
changes, etc.
Refer to the transformer documentation.
Connecting the inverters to the AC supply
Close the AC disconnectors [-1Q4 and -2Q4]
of the both inverters.
Do the rest of the inverter commissioning
tasks according to the procedure.
PVS980 commissioning and maintenance manual
(3AXD50000046782 [EN])
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