SMA WB 3000-21 Installation User Manual
Page 65
SMA Solar Technology AG
11 Troubleshooting
Installation Manual
WB3-5TL-21-IA-en-10
65
3401 to
3402
DC overvoltage
Disconnect generator
Overvoltage at DC input. The inverter may be destroyed.
When this message is signaled, it is accompanied by
rapid flashing of the backlight.
Corrective measures:
• IMMEDIATELY DISCONNECT the inverter from
voltage sources (see Section 9).
• Check the DC voltage to ensure it is below the
maximum input voltage of the inverter. If the DC
voltage is below the maximum input voltage of the
inverter, reconnect the DC connectors to the
inverter.
• If the DC voltage is above the maximum input
voltage of the inverter, ensure that the small wind
turbine system and the relevant DC overvoltage
protection are correctly rated or contact the small
wind turbine system installer.
• If this message is repeated frequently, contact the
SMA Service Line.
3501
Insulation failure
Check generator
The inverter has detected a ground fault in the small wind
turbine system.
Corrective measures:
• Check the small wind turbine system for ground
3601
High discharge curr.
Check generator
The leakage currents of the inverter and the small wind
turbine system are too high. A ground fault, a residual
current or a malfunction is present.
The inverter interrupts feed-in operation immediately after
exceeding a limiting value. When the fault is eliminated,
the inverter automatically reconnects to the power
distribution grid.
Corrective measures:
• Check the small wind turbine system for ground
Event
number
Display message
Cause and corrective measures