KACO Powador 16.0 TR3 - Manual (Page 45)

M a i n t e n a n c e / T r o u b l e s h o o t i n g
Page 46 Operating Instructions Powador 16.0 TR3, 18.0 TR3_EN
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.
• Line 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 irradiance,
a light hum may be audible due to the increased power.
• Under particular grid conditions, resonances may form
between the unit’s input fi lter and the grid, which may be
audible even when the inverter is switched off .
These noise emissions do not aff ect the operation of the
inverter. They do not lead to loss of effi ciency, 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
irradiance, the
inverter does not
feed in the maxi-
mum power into
the grid.
The device is too
hot and the power
is reduced.
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 unhindered convection cooling from
the exterior. Do not cover the cooling fi ns.
 Provide for suffi cient cooling of the unit.
 Do not cover the cooling fi ns.
B, E
Table 5: Troubleshooting
B = Action of the operator
E = The indicated work must only be carried out by an authorised electrician.
K = The indicated work must only be carried out by a service employee of KACO new energy GmbH.