Faults - Kaco Powador Operating Instructions Manual

M a i nten ance /Trou bl es hoo ti ng
Shutting down the inverter
5. Switch off the grid voltage by turning off the external circuit breakers.
6. Disconnect the PV generator using the DC isolator switch.
DANGER! The DC cables are still live.
" Ensure that there is no voltage present on the grid connection terminals.
9.4

Faults

9.4.1 Procedure
DANGER
Lethal voltages are still present in the terminals and cables of the inverter even after the
inverter has been switched off and disconnected.
Severe injuries or death may occur if the cables and terminals in the inverter are touched.
" When a fault occurs, notify an appropriately authorised and qualified electrician or KACO new
energy GmbH Service.
" The operator can only carry out actions marked with a B.
" In case of power failure, wait for the system to automatically restart.
" Notify your electrician if there is an extended power failure.
9.4.2 Troubleshooting
B = Action of the operator
E = The indicated work may only be carried out by an authorised electrician.
K = The indicated work may only be carried out by a service employee of KACO new energy GmbH.
Fault
Cause of fault
The display Grid voltage not
is blank and available
the LEDs do not
light up.
The inverter stops Faulty grid
feeding into the separation relay in
grid shortly after the inverter.
being switched
on, even though
there is sunlight
present.
Grid-feed is
The inverter
interrupted due to
is active but
a grid fault.
does not feed
into the grid.
The display
indicates a line
failure.
Table 5: Troubleshooting
Operating Instructions Powador 30.0-72.0 TL3_EN
Explanation/remedy
" Check whether the DC and AC voltages are within
the permitted limits (see Technical Data).
" Notify KACO Service.
If the grid separation relay is defective, the inverter will
recognise this during the self-test.
" Ensure that there is sufficient PV generator power.
" If the grid separation relay is defective, have it replaced by
KACO Service.
" Notify KACO Service.
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).
By
E
E
E
E
E
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