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Protect PV.630 Installation and Start-up
20 of 21 80000047963 BAL
6.3 Connection of DC Voltage
GCB Generator connection box
Grid Power utility mains (supplying mains)
DOU Display and operation unit
After connecting the DC voltage:
Switch off GCBs (external).
Check that there is no voltage.
Insert all F41 fuses (DC/AC control cabinet).
Check the polarity in the system's DC/AC control cabinet.
Check the polarity of the DC at every GCB.
Connect all GCBs.
Switch on the system via the DOU.
The INV contactor K7 switches on automatically after a few sec-
onds and power is fed into the power utility mains.
If the INV contactor K7 does not switch on, check the following:
“Field rotation fault” fault message
Check the INV control cabinet and DC/AC control cabinet connec-
tion lines to ensure they have a clockwise rotating field.
Isolate the system to do this.
Other fault indications
See “Monitoring Systems, Messages and Faults” in the operat-
ing instructions.