KACO Powador 10.0 - 20.0 TL3 - Manual (Page 47)

EN
Maintenance/Troubleshooting
Operating Instructions Powador 12.0 TL3-20.0 TL3 Page 47
Fault Cause of fault Explanation/remedy By
Noise emission
from the inverter.
Particular ambient
conditions.
When there are certain ambient conditions, the units may emit
audible noises.
• Grid interference or grid failure caused by particular loads
(motors, machines, etc.) which are either connected to
the same point on the grid or located in the vicinity of the
inverter.
• In cases of volatile weather conditions (frequent switching
between sunny and cloudy conditions) or strong solar
radiation, a light hum may be audible due to the increased
power.
• Under certain grid conditions, resonances may form
between the unit’s input filter and the grid, which may be
audible even when the inverter is switched off.
These noise emissions do not affect the operation of
the inverter. They do not lead to loss of efficiency, failure,
damage or to a shortening of the unit’s service life.
People with very sensitive hearing (particularly children) are
able to hear the high-frequency hum caused by the inverter’s
operating frequency of approximately 17 kHz.
" No action
In spite of high
radiation levels,
the inverter does
not feed the
maximum power
into the grid.
The device is too
hot and the system
limits the power.
Because the temperatures inside the unit are too high,
the inverter reduces its power to prevent damage to the unit.
Note the technical data. Ensure that the convection cooling is
not impeded from the exterior. Do not cover the cooling fins.
" Ensure sufficient cooling of the unit.
" Do not cover the cooling fins.
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