VFD Cables VS. Traditional Cables for Drive Applications

Variable Frequency Drive (VFD) cables have been around since the early 1990s in order to help minimize operational issues with VFD systems. The advancements in Insulated Gate Bipolar Transistors and technology drives caused a significant increase in the high frequency information output from the drive inverters. That means that traditional power cables had issues handling these high frequency signals, which could lead to system problems.

This is why VFD cables are so important. They provide extra protection and are specifically designed for installation between a motor and a VFD. This reduces any downtime when using THHN or shielded tray cables. VFD cables are designed for higher stranding, robust insulation and overall better shielding.

Why should you choose VFD cables?

VFD cables are more reliable than traditional cables, and offer better protection and improved performance over traditional. Traditional cables cannot compare to the performance improvement and they lack a shielding system, which minimizes radiated and conducted noise. VFD cables offer industrial grade XLPE insulation, which is entirely more reliable than traditional.

Product Spotlight:

General Cable offers a wide range of VFD cables perfect for any setup. With the CVTC® and CCW® lines, General Cable offers the highest quality VFD cable solutions for many categories including factory automation, traditional power generation, marine, refining and petrochemical, specialty chemical and wastewater treatment applications. General Cable designs incorporate symmetrical grounding which minimizes ground voltages and induced ground currents that can lead to motor-bearing fluting and premature motor failure. VFD cables from General Cables undergo rigorous testing to ensure the most reliable power from the AC drive to AC motors. You can rest easy knowing your cables are performing at their best.

CVTC® VFD cables are designed and engineered to handle the challenges presented in VFD environments. They are used in a wide range of applications. CVTC is a low voltage power, shielded 600V, UL type TC-ER, unarmored and Method 4 color code.

Features (SPEC 4550):

  • Rated at 90°C wet or dry
  • Combination foil/brand shield provides maximum shield coverage required for VFD applications
  • Abrasion and chemical resistant
  • Stable electrical properties over a broad temperature range
  • Sunlight and weather resistant
  • Meets cold bend test at -25°C
  • Flexible strand conductors for all sizes to allow for ease of installation and long-term performance in light duty flexing applications

Applications include:

  • Free air, raceways or direct burial.
  • For use with AC motors controlled by pulse-width modulated inverter in VFD applications rated up to 1000V.
  • For use in aerial, conduit, open tray and underground duct/installations.
  • It is permitted for use in Class 1, Division 2 industrial hazardous locations per NEC.
  • Permitted for Exposed Run use in accordance with NEC.

CCW® VFD Low and Medium Voltage Power

General Cable’s CCW® Armored Power, 3/C VFD and 4/C cables are insulated conductors and grounding wires that are cabled together with non-hygroscopic fillers.

Features (SPEC 9600):

  • 3-conductor CCW power cables with three grounding wires are recommended for use with pulse-width AC drives.
  • CCW armor provides an impervious barrier to moisture, gas and liquids.
  • CCW armor provides EMI shielding performance.
  • Factory assembled and tested cable for use as an alternative to cable in conduit wiring systems.
  • Meets cold impact at -40°C.
  • 90°C continuous operating temperature, wet or dry.
  • 130°C emergency rating.
  • 250°C short circuit rating

Applications include:

  • 3-conductor CCW armored cables with 2 symmetrical grounding wires are the preferred wiring method for use with AC motors controlled by pulse-width modulated inverters in VFD applications.
  • CCW armored cabled offer an economical, rugged and reliable alternative to labor-intensive cable in conduit wiring methods.
  • For use in Class I, II and III, Divisions 1 and 2; and Class I, Zones 1 and 2 hazardous locations per NEC Articles 501, 503 and 505.
  • For use as services, feeders and branch circuits for power, lighting, control, and signal circuits in accordance with NEC articles 330 and 725.
  • Installed indoors or outdoors, wet or dry, buried, embedded, in a raceway, as aerial cable on a messenger, in cable trays, or as exposed runs secured to supports in accordance with NEC article 330.
  • Recognized for use on fixed or floating offshore petroleum facilities as recommended by the American Petroleum Institute.

Want to learn more about VFD cables? Give your French Gerleman Account Manager a call today or contact us.

Drive Applications General Cable VFD Cables