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3 conductor with 3 ground wires, continuous corrugated and welded, impervious aluminum sheath, PVC jacket
CORFLEX® VFD cables are designed to improve the operating performance of variable frequency drive systems. The 600 volt CORFLEX® VFD cables provide excellent shielding from high frequency noise that can interfere with data and control signals. Nexans CORFLEX® sheath provides a long term low resistance path to ground to protect the drive system. Cable grounds provide the best cancellation and lowest net injected ground current into the drive system protecting against common mode currents which impair the drive unit electronic performance and shorten the drive life span. Cable grounds also ensure a balanced, low resistance path to ground to reduce the chance of motor failure due to bearing currents. The CORFLEX® VFD cable design has been shown to be the best of eight cable constructions studied for use between a VFD and the motor. This information can be found in an IEEE paper called "Evaluation of Motor Power Cables for PWM AC Drives" published in 1996.
Construction
Conductor:
Bare, annealed copper conforming to ASTM B3 and Class B stranded in accordance with ASTM B8.
Insulation:
Crosslinked polyethylene type XHHW-2 per UL 44.
Assembly:
Conductors are cabled in concentric layers with three grounding wires, interstices are filled with suitable non-hygroscopic fillers, as required. A binder tape of synthetic material assembles the core in an essentially round configuration.
Armor:
Continuous corrugated and welded, impervious aluminum sheath with no more than 0.2% trace copper providing complete protection against liquid and gas ingress. It also provides excellent mechanical protection, additional electrostatic shielding, and serves as an easy means of grounding equipment.
Jacket:
Overall black polyvinyl chloride jacket per UL 1569, 90°C temperature rating; low gas emission; limited flame spread and excellent corrosion resistance.
Conductor Identification:
Sizes 14 AWG to 2 AWG: Method #1-E2 per ICEA S-73-532
Sizes 1 AWG to 500 kcmil: Method #4 per ICEA S-73-532
Bending Radius:
Fixed position: 7 x cable overall diameter
During pulling: 12 x cable overall diameter
Specifications
- Meets UL 44, XHHW-2 600V conductors
- Meets UL 1569 requirements for Type MC, Metal Clad cables
- Meets UL 2225 for Hazardous Locations
- Designated Type MC as per NEC 2008 and NEC 2011 Article 330
- Meets CSA C22.2 No. 123-08 for Aluminum Sheathed Cables
- Meets CSA C22.2 No. 174-M1984 for Hazardous Locations
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