Safety precautions
NT 10000...NT 12000 9
WARNING
High leakage currents. Be sure to make an earthing connection before connec-
ting the power supply circuit (AC system).
2.3 Basic safety measures
Electrical work on the Solar Inverter must be conducted by a qualified electrici-
an while observing the VDE regulations, national and other regulations!
The Solar Inverter may only be opened by persons who are authorised by Sun-
ways AG.
When circuit breakers are tripped, the cause of the fault must be determined
and eliminated before returning the unit to operation.
Check electrical equipment regularly.
Retighten any loose connections.
Replace damaged lines/cables immediately.
2.4 Safety concept
The following parameters are monitored and displayed continuously and simul-
taneously by the inverter controller:
DC overvoltage
Overvoltage L1, L2, L3
Undervoltage L1, L2, L3
Over-/underfrequency L1, L2, L3
Surge error (brief overvoltage L1, L2, L3)
DC share in AC current
AFI residual current
Overtemperature of heat sink
When a malfunction occurs, feeding is immediately interrupted and the Solar
Inverter disconnects from the grid by triggering the mains relay.
The potential-free alarm relay is activated.
If a residual current occurs on the DC side, only the affected power unit switches
off. The same applies in th event of an insulation fault: Only the power unit in
which the fault occurred switches off. The other power units continue operating
normally.
Warning! High leakage current,
earth connection essential before
connecting supply.
To Next Page
Loading...
