Residual Current Device - Danfoss FC 300 Design Manual

FC 300 Design Guide
How to Install

Residual Current Device

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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 for further information.
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MG.33.B6.22 - VLT is a registered Danfoss trademark