5-4
Electrical installation
REFUspeed RS51
DOK-RD500*-RS51*******-IB02-EN-P
Information on protective grounding:
The cross-section of the
protective conductor to the cabinet must be at least 10mm
2
Cu
or a second protective conductor must be routed in parallel
(VDE 0160, Section 6.5.2) in accordance with DIN VDE 0160.
This is due to the discharge currents of the drive units (>3.5
mA) through the protective conductor (PE). The discharge cur-
rent of the drive converter can be up to 100 mA.
For higher connected powers, the minimum cross-section of
the protective conductor must be in an appropriate ratio to the
cross-section of the main phase conductor. Refer to 57100
Part 540 / VDE 0100 Part 540 Table 2. The line-side circuit of
the drive converter corresponds to circuit 7 (DIN VDE 0160-
5.5.3.4.2 Fig. 8).
An e.l.c.b. device (residual current-operated device) may not
be used as protective measure.
5.3
Cable cross-sections
The cable cross-sections refer to the rated drive converter current.
The associated protective conductor cross-section must be a minimum of
10 mm
2
(if power cables, with cable cross-sections >10 mm
2
are used,
then the protective conductor must have the same cross-section).
The following is assumed for the line supply feeder
cables / DC feeder cables:
•
The cross-sections are valid for one phase for multi-stranded conduc-
tors, and were defined in accordance with VDE0298.
•
Up to 35 mm², individual conductors in a cable duct.
•
Above 50 mm², freely routed in the cabinet without any contact to other
cables
The following is assumed for motor feeder cables:
•
The cross-sections are valid for shielded 4-core cables and were de-
fined in accordance with VDE0298.
•
Up to 35 mm², routed in the cable duct, without any cable bundling.
•
Above 50 mm², freely routed in the cabinet without any contact to other
cables.
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