Faults - Kaco Powador 2002 Operating Manual

Maintenance/Troubleshooting
Authorised electrician
Shutting down the inverter
1. Switch off the grid voltage by turning off the external circuit breakers.
2. Disconnect the PV generator using the DC disconnect.
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 authorised electrician approved by the supply grid operator 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 is Grid voltage not
blank and the available
LEDs are not light-
ing up.
The inverter stops Faulty grid sepa-
feeding into the ration relay in the
grid shortly after inverter.
being switched
on, even though
there is sunlight
present.
Grid-feed is inter-
The inverter is
rupted due to a
active but does
grid fault.
not feed into the
grid. The display
indicates a line
failure.
Table 6: Troubleshooting
Operating Instructions for Powador 2002-6002_EN
Explanation/remedy
 Check whether the DC and AC voltages are within the per-
mitted limits (see Technical Data).
 Notify KACO Service.
If the grid separation relay is defective, the inverter will recog-
nise this during the self-test.
 Ensure that there is suffi cient 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/undervolt-
age, over/underfrequency), the inverter stopped the feed-in
process and disconnected from the grid for safety reasons.
 Change the line parameters within the permitted operat-
ing limits (see the "Start-Up" section).
By
E
E
E
E
E
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