Residual Current Device - Danfoss FC 300 Design Manual

6. How to Install

6.10.1. Residual Current Device

You can use RCD relays, multiple protective grounding or grounding as extra protection, provided
that local safety regulations are complied with.
If a ground fault appears, a DC content may develop in the faulty current.
If RCD relays are used, you must observe local regulations. Relays must be suitable for protection
of 3-phase equipment with a bridge rectifier and for a brief discharge on power-up see section
Ground Leakage Current
6
142
for further information.
MG.33.B9.22 - VLT ® is a registered Danfoss trademark.
FC 300 Design Guide