C o n e r g y IP G s t r in g in v e r t e r s e r ie s
In st ru c t io n m an u al
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7 T r o u b le s h o o t in g
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Tr o u b le s h o o t in g
The Conergy IPG string inverter series inverter works
automatically and without maintenance. However, should
malfunctions arise, these will be indicated by the LED
indicators and/or the Conergy SunReader (see
www.sunreader.de).
The inverter may switch off temporarily in the following
cases:
Grid failure
The Conergy IPG string inverter series inverter monitors the
single-phase power feed to the grid by means of the phase-
shifting process. If the inverter detects a frequency change in
the public power grid, it interrupts the power feed to the grid.
It switches off. The inverter waits 2 minutes before switching
back on after a grid failure.
DC overvoltage
If the DC input voltage exceeds the limit value of 800 V
DC
,
the inverter interrupts the power feed to the grid. It switches
off.
Overheating
The Conergy IPG string inverter series inverter is designed to
operate at an ambient temperature of up to 60°C. If this
temperature is exceeded, the inverter interrupts the power
feed to the grid and switches off. Once the temperature sinks
back to below the limit value of 60°C, the inverter
automatically switches back on after 4 minutes.
Fault current
monitoring
The fault current monitoring system automatically switches
the inverter off when a fault arises. Once the fault is rectified,
the inverter automatically switches on again after 4 minutes.
