KACO Powador 30.0 - 60.0 TL3 - Manual (Page 47)

Maintenance/Troubleshooting
Operating Instructions for Powador 30.0-72.0 TL3_EN Page 47
EN
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 result if the cables and terminals in the inverter are touched.
 When a fault occurs, notify an appropriately authorised and qualifi ed 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 Explanation/remedy By
The display is
blank and the
LEDs do not light
up. Grid voltage not
available  Check whether the DC and AC voltages are within the per-
mitted limits (see Technical Data).
E
 Notify KACO Service. E
The inverter stops
feeding into the
grid shortly after
being switched
on, even though
there is sunlight
present. Faulty grid sepa-
ration relay in the
inverter. 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. E
 If the grid separation relay is defective, have it replaced by
KACO Service.
 Notify KACO Service.
E
The inverter is
active but is not
feeding into the
grid. The display
indicates a line
failure.
Grid-feed is inter-
rupted due to a
grid fault. 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 operating
limits (see the “Start-Up” section).
E
Table 5: Troubleshooting