Kaco Powador 10.0 - 20.0 TL3 User Manual download pdf (Page 46)

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Maintenance/Troubleshooting

Page  Operating Instructions Powador . TL-. TL

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).

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).

" Contact the grid operator if the grid failure continues to

occur.

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.

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 o by

disconnecting it from the grid and switching o the DC,

then switch it back on.

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 sucient 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 diers 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.

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Kaco Powador 10.0 - 20.0 TL3 User Manual Page 46

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