Recommended Installation Of Motor Cables - Danfoss iC7 Series Design Manual

Design Guide | iC7 Series Liquid-cooled System Modules
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Grounding bar of the control cable
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Grounding conductor
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Motor cables
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The grounding clamp, 360° grounding

Recommended Installation of Motor Cables

7.6
If the power units are connected in parallel without output filters or only with a common-mode filter, the recommended common
coupling point of motor cables is at the motor terminals. It is also possible to use an alternative installation method where the common
coupling point of the motor cables is near the drives. In this case, to avoid current imbalance, the installation must be symmetrical and
the tolerance of cable length (impedance) to common coupling point is maximum 5%. If the cable connections are not symmetrical, use
a dU/dt filter or a sine-wave filter.
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Figure 63: Recommended Installation
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Inverter module
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Figure 64: Alternative Installation Method
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Inverter module
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Control cable
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Mains cables
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Strain relief
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M
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Common coupling point at the motor terminals
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AJ475942178716en-000101 / 172K2848A