Appendix A Trouble-free Use of Inverters (Notes on Electrical Noise)
Appendix-5
A.3 Measure
As the noise prevention is strengthened, the more effective it is. However, with the use of appropriate measures,
noise problems may be resolved easily. It is necessary to implement economical noise prevention according to the
noise level and the equipment conditions.
[ 1 ] Noise prevention prior to installation
Before installing an inverter in your control panel or installing an inverter panel, you need to consider noise
prevention. Once noise problems occur, it will cost additional materials and time for solving them.
Noise prevention prior to installation includes:
(1) Separate the main circuit from the control circuit.
(2) Accommodate the main circuit wiring in a metal pipe (conduit pipe).
(3) Use shielded wire or twisted shielded wire in the control circuit.
(4) Perform reliable grounding work and wiring.
These noise prevention measures can avoid most noise problems.
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