Allen-Bradley PowerFlex 700S Quick Start Manual page 15

Shielded cable may also help reduce shaft voltage and induced bearing
currents for some applications. In addition, the increased impedance of
shielded cable may help extend the distance the motor can be located from
the drive without the addition of motor protective devices such as terminator
networks. Refer to Reflected Wave in Wiring and Grounding Guidelines for
PWM AC Drives, publication DRIVES-IN001.
Consideration should be given to all of the general specifications dictated by
the environment of the installation, including temperature, flexibility,
moisture characteristics and chemical resistance. In addition, a braided
shield should be included and specified by the cable manufacturer as having
coverage of at least 75%. An additional foil shield can greatly improve
noise containment.
A good example of recommended cable is Belden
gauge). This cable has 4 XLPE insulated conductors with a 100% coverage
foil and an 85% coverage copper braided shield (with drain wire)
surrounded by a PVC jacket.
Other types of shielded cable are available, but the selection of these types
may limit the allowable cable length. Particularly, some of the newer cables
twist 4 conductors of THHN wire and wrap them tightly with a foil shield.
This construction can greatly increase the cable charging current required
and reduce the overall drive performance. Unless specified in the individual
distance tables as tested with the drive, these cables are not recommended
and their performance against the lead length limits supplied is not known.
Table C Recommended Shielded Wire for Power Wiring
Location Rating/Type
Standard 600V, 90°C (194°F)
(Option 1) XHHW2/RHW-2
Anixter
B209500-B209507,
Belden ®
29501-29507, or
equivalent
Standard Tray rated 600V, 90° C
(Option 2) (194° F) RHH/RHW-2
Anixter OLF-7xxxxx or
equivalent
Class I & II; Tray rated 600V, 90° C
Division I & II (194° F) RHH/RHW-2
Anixter 7V-7xxxx-3G
or equivalent
®
Description
Four tinned copper conductors with XLPE insulation.
Copper braid/aluminum foil combination shield and tinned
copper drain wire.
PVC jacket.
Three tinned copper conductors with XLPE insulation.
5 mil single helical copper tape (25% overlap min.) with three
bare copper grounds in contact with shield.
PVC jacket.
Three bare copper conductors with XLPE insulation and
impervious corrugated continuously welded aluminum armor.
Black sunlight resistant PVC jacket overall.
Three copper grounds on #10 AWG and smaller.
15
295xx (xx indicates