Eaton PowerXL DC1 20 Series Installation Manual page 75

Variable frequency drives
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Route mains and motor cables in the control cabinet as close to
the ground potential as possible. This is because free moving
cables act as antennas.
If routed in parallel, cables carrying high frequencies (e.g.,
screened motor cables) and clean cables (e.g., mains supply
cable, control and signal cables) should be installed at a distance
of at least 100 mm from each other in order to avoid
electromagnetic interference. You should also use separate
cable entries if there is a great difference in voltage potentials.
If control cables and power cables need to cross, they should
always do so at a right angle (90°).
≧ 100 mm
(≧ 3.94")
Figure 34:
Cable routing
Do not route the control and signal cables ② in the same
conduit as the power cables ①.
Analog signal cables (measured values, setpoints, and
correction values) must be routed inside screened conduit.
b
b
a
Figure 35:
Separate routing
a Power cable: mains voltage, motor connection
b Control and signal lines, fieldbus connections
DC1...20... and DC1...OE1 Variable Frequency Drives 02/20 MN040059EN www.eaton.com
a
3 Installation
3.5 EMC installation
71

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