3 Installation
3.3 EMC installation
52 DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com
￫
Route mains and motor cables in the switch cabinet as close to
the ground potential as possible. This is because free moving
cables act as antennas.
￫
When laying HF cables (e.g. screened motor cables) or
suppressed cables (e.g. mains supply cables, control circuit and
signal cables) in parallel, a minimum clearance of 300 mm
should be ensured in order to prevent the radiation of electro-
magnetic energy. You should also use separate cable entries if
there is a great difference in voltage potentials. Any necessary
crossed cabling between the control signal and power cables
should always be implemented at right angles (90 degrees).
￫
Never lay control- or signal cables in the same duct as power
cables. Analog signal cables (measured, reference and correc-
tion values) must be screened.
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