Danfoss VLT AutomationDrive FC 360 Design Guide

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THDv= 0%
THDv= 5%
Leakage current
Figure 29: Line Distortion Influences Leakage Current
If the leakage current exceeds 3.5 mA, compliance with EN/IEC61800-5-1 (power drive system product standard) requires special care.
Reinforce grounding with the following protective earth connection requirements:
l Ground wire (terminal 95) of at least 10 mm
2
(8 AWG) cross-section.
l 2 separate ground wires both complying with the dimensioning rules.
See EN/IEC61800-5-1 and EN 50178 for further information.
Using RCDs
Where residual current devices (RCDs), also known as Ground Leakage Circuit Breakers, are used, comply with the following:
l Use RCDs of type B only as they can detect AC and DC currents.
l Use RCDs with a delay to prevent faults due to transient ground currents.
l Dimension RCDs according to the system configuration and environmental considerations.
The leakage current includes several frequencies originating from both the mains frequency and the switching frequency. Whether the
switching frequency is detected depends on the type of RCD used.
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Design Guide | VLT® AutomationDrive FC 360

Danfoss VLT AutomationDrive FC 360 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 360
Category	DC Drives
Language	English