KACO Powador 10.0 - 20.0 TL3 - Manual (Page 46)

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Maintenance/Troubleshooting
Page 46 Operating Instructions Powador 12.0 TL3-20.0 TL3
Fault Cause of fault Explanation/remedy By
The inverter is
active but does
not feed into the
grid. The display
indicates a line
failure.
Grid-feed is
interrupted due to
a grid fault.
Due to a grid fault (grid impedance too high, over/undervoltage,
over/underfrequency), the inverter stopped the feed-in process
and disconnected from the grid for safety reasons.
" Change the line parameters within the permitted
operating limits (see the “Start-Up” section).
E
The grid fuse
trips.
The grid fuse
capacity is too low.
In cases of high solar radiation, the inverter exceeds its rated
current for a short period, depending on the PV generator.
" Select the capacity of the inverter’s pre-fuse to be
somewhat higher than the maximum feed-in current
(see the “Installation” section).
E
" Contact the grid operator if the grid failure continues to
occur.
E
The grid fuse
trips.
Damage to
the inverter’s
hardware.
If the line fuse trips immediately when the inverter goes
into feed-in mode (after the start-up period is complete),
the inverter’s hardware is probably damaged.
" Contact KACO Service to test the hardware.
E
The inverter
displays an
impossible daily
peak value.
Faults in the grid. The inverter continues to operate as normal without losses
to the yield, even when an erroneous daily peak value is
displayed. The value is reset overnight.
" To reset the value immediately, switch the inverter off by
disconnecting it from the grid and switching off the DC,
then switch it back on.
E
Daily yields do
not correspond to
the yields on the
feed-in meter.
Tolerances of
the measuring
elements in the
inverter.
The measuring elements of the inverter have been selected
to ensure maximum yields. Due to these tolerances, the daily
yields shown may deviate from the values on the feed-in meter
by up to 15%.
" No action -
The inverter is
active but is not
feeding into
the grid. Display:
“Waiting for
feed-in”
• Generator
voltage too low
• Grid voltage or
PV generator
voltage unstable.
• The PV generator voltage or power is not sufficient for
feed-in (solar radiation is too low).
• The inverter checks the grid parameters before the feed-in
process begins. The length of time it takes to switch back on
again differs by country according to applicable standards
and regulations and can take several minutes.
• The starting voltage may have been set incorrectly.
" Adjust starting voltage in the Parameter menu if required. E