Does the Type of Cable Really Matter in My VFD System?

Belden VFD Cable

The short answer is yes.

  1. Shielding on cables is what prevents interaction between systems.
  2. The wall thickness and material of insulation is how a cable combats voltage spikes.
  3. The type of insulation on your cable determines how it responds to thermal stress.

The type of shield on a cable is the cable's defense against noise. Belden's shielding system is designed to prevent noise from radiating from the VFD system and interfering with surrounding networking, instrumentation, wireless communication, and industrial devices.

Belden's VFD cable has XLP insulation which has much lower capacitance (has higher corona inception voltage) than THHN and generic control/tray cable which use PVC. This is particularly important in wet or damp environments as PVC is more susceptible to absorbing moisture -resulting in less than half the insulation capability of XLP.

Belden's VFD cable has thermoset insulation which won’t melt or drip like THHN and generic control/tray cable's insulation material (thermoplastic) will in higher temperatures.

Resources

Belden VFD Cable Cut Sheet

Benefits of Belden's VFD cable solutions, including a cable guide with style, part number and descriptions.