Danfoss VLT CDS 803 Manual page 64

VLT® Compressor Drive CDS 803
Design Guide
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.
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.
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.
64 | Danfoss A/S © 2021.05
THDv=0%
THDv=5%
a
b
Motor cable length
AJ330233902305en-000201 / 130R0596
Electrical Installation
Considerations