Maintenance
8
8.1
Disposal of waste electronic equipment
Disposal of waste electronic equipment
Waste electronic equipment must not be disposed of as unsorted municipal waste, e.g.
household waste. When disposing of waste electronic equipment, the current local national/
international regulations must be observed.
CAUTION
Maintenance
Disregarding the following measures may result in severe operation failures, bursting and fire.
• Check tightness of the connections/terminals periodically, two weeks after installation at
the latest, and then once every month.
• Clean the terminals / bushings periodically to avoid short circuits due dust or other
contamination.
• Check the short circuit protection fuses.
• Take current reading twice a year and compare with nominal current. Use a harmonic
analyzer or true effective RMS-meter.
• In case of a current above the nominal current check your application for modifications.
• If a significant increase in the amount of non-linear loads is detected, a consultant has to be
called in for a harmonic study.
• In cases of the presence of harmonics, the installation of a de-tuned capacitor bank
(reactors) must be considered.
• Check the discharge resistors / reactors and in case of doubt check their function:
1. Power the capacitor up and down.
2. After 60 seconds the voltage between the terminals must decline to less than 75 V. Please
note that for specific types discharge time is 180 seconds.
• Check the temperature of energized capacitors. In case of excessive temperature of
individual capacitors, it is recommended to replace this capacitor, as this could be an
indication for loss factor increase which is a sign for reaching end of life.
Note
Please note again that these "Installation and Maintenance Instructions" apply to typical
specifications. Refer to our product specifications, or request our approval for your specification
before installing a capacitor.
Installation and maintenance instructions for Power Factor Correction (PFC) capacitors
Installation Manual, 05/2022, L1V30884033A
29
