1-6 General Installation Information
PowerFlex® 700L Liquid-Cooled Drive User Manual
Publication 20L-UM001D-EN-P
Armored Cable
Cable with continuous aluminum armor is often recommended in drive
system applications or specific industries. It offers most of the advantages
of standard shielded cable and also combines considerable mechanical
strength and resistance to moisture. It can be installed in concealed and
exposed manners and removes the requirement for conduit (EMT) in the
installation. It can also be directly buried or embedded in concrete.
Because noise containment can be affected by incidental grounding of the
armor to building steel when the cable is mounted, it is recommended the
armor cable have an overall PVC jacket. See Chapter 2, “Wire Types” in
Wiring and Grounding Guidelines for Pulse Width Modulated (PWM) AC
Drives (publication DRIVES-IN001) for details.
Interlocked armor is acceptable for shorter cable runs, but continuous
welded armor is preferred.
Best performance is achieved with three spaced ground conductors, but
acceptable performance below 200 HP is provided via a single ground
conductor.
Table 1.B Recommended Shielded/Armored Wire
Cable Trays and Conduit
If cable trays or large conduits are to be used, refer to guidelines presented
in Wiring and Grounding Guidelines for Pulse Width Modulated (PWM) AC
Drives (publication DRIVES-IN001).
Location Rating/Type Description
Standard
(Option 1)
1000V, 90°C (194°F)
XHHW2/RHW-2 Anixter
B29528-B29532, Belden
29528-29532, or
equivalent
• Four tinned copper conductors with XLPE insulation.
• Copper braid/aluminum foil combination shield and
tinned copper drain wire.
• PVC jacket.
Standard
(Option 2)
Tray rated 1000V, 90°C
(194°F) RHH/RHW-2
Anixter OLFLEX-76xxx03
or equivalent
• Three tinned copper conductors with XLPE insulation.
• corrugated copper tape with three bare copper
grounds in contact with shield.
• PVC jacket.
Class I & II;
Division I & II
Tray rated 1000V, 90°C
(194°F) RHH/RHW-2
Anixter 7VFD-xxxx or
equivalent
• Three bare copper conductors with XLPE insulation
and impervious corrugated continuously welded
aluminum armor.
• Black sunlight resistant PVC jacket overall.
• Three copper grounds.
!
ATTENTION: To avoid a possible shock hazard caused by
induced voltages, unused wires in the conduit must be grounded
at both ends. For the same reason, if a drive sharing a conduit is
being serviced or installed, all drives using this conduit should be
disabled. This will help minimize the possible shock hazard from
“cross coupled” motor leads.
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