Danfoss VLT CDS 803 - Page 64

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The ground leakage current is made up of several contributions and depends on various system configurations, including:
RFI filtering.
Motor cable length.
Motor cable shielding.
Drive power.
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a
b
Motor cable length
Leakage current
Illustration 44: Influence of the Cable Length and Power Size on Leakage Current, Power Size a > Power Size B
The leakage current also depends on the line distortion.
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THDv=0%
THDv=5%
Leakage current
Illustration 45: Influence of Line Distortion on Leakage Current
If the leakage current exceeds 3.5 mA, compliance with EN/IEC 61800-5-1 (power drive system product standard) requires special
care.
AJ330233902305en-000201 / 130R059664 | Danfoss A/S © 2021.05
Electrical Installation
Considerations
VLT® Compressor Drive CDS 803
Design Guide