7 Commissioning
Before starting work on an opened switchboard it is imperative that the complete
switchboard is dead and the following 5 safety regulations are always met:
DANGER!
Safety precautions:
• Disconnect from the power supply (if available for the WIC1)•
• Secure against reconnection•
• Verify if the equipment is dead•
• Connect to ground and short-circuit all phases•
• Cover or safeguard all live adjacent parts•
DANGER!
The secondary circuit of a current transformer must never be opened during operation.
The prevailing high voltages are dangerous to life.
WARNING!
Even when the auxiliary voltage, or the protective device, is switched oó°Šž, it is likely that
there are still hazardous voltages at the component connections.
All locally applicable national and international installation and safety regulations for
working at electrical power installations must always to be followed (e.g. VDE, EN, DIN,
IEC).
It is strongly recommended to fasten a permanent label somewhere in the low-voltage
cell (e. g. as a banneret 󰊟xed to the CT cables) with information about the CT type.
After the site has been put into operation the medium-voltage parts must no longer be
accessed, so that there is no way anymore to ó°ŠŸnd out the CT type.
187WIC1WIC1-1.0-EN-MAN
7 Commissioning
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