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Safety Instructions 5
1
Safety Instructions
Contents
The safety instructions necessary to the installation, operation and
maintenance of harmonic filter units are described in this chapter. Ignoring
these safety instructions may result in personal injury or damage to filters,
drives, motors or other drive equipment. Please read this chapter carefully
before operating the filter.
Safety of installation and maintenance
 General safety instructions
Warning! All electrical installation and maintenance of harmonic filters
shall be performed by qualified electrical engineers.
The harmonic filter and its connecting devices shall be grounded.
Never try any operation on the harmonic filter that has been powered on.
After the power supply is cut off, the capacitor of the intermediate circuit
shall be discharged for 5 minutes before operating the frequency converter,
motor or motor cable. Before starting the operation, a voltage multimeter
shall be used to check whether the incoming and outgoing terminals of
harmonic filter have been discharged.