Why Do I Need to Use VFD (Variable Frequency Drive) Cable?

Using a VFD-rated cable is critical to mitigate these effects and ensure system reliability.

Benefits of Using VFD Cable

Reduces Electrical Noise (EMI/RFI): Prevents interference with nearby equipment, sensors, and communication lines.
Protects Motor and Drive: Manages voltage reflections and bearing currents to extend equipment lifespan.
mproves System Reliability: Minimizes drive trips, data loss, and erratic motor behavior.
Regulatory Compliance: Helps meet EMC and industrial safety standards.

Risks of Not Using VFD Cable

Electromagnetic Interference (EMI): Can disrupt PLCs, sensors, and communication systems.
Motor or Drive Damage: Voltage spikes and poor grounding may cause insulation failure or bearing pitting.
Operational Instability: Increased downtime from nuisance tripping and communication faults.
Non-Compliance: May result in failure to meet required electrical and safety standards.

Difference Between VFD Cable and Standard Hook-Up Cable

	VFD Cable	Standard Hook-Up Cable
Shielding	Includes foil and/or braided shields to contain electromagnetic interference (EMI)	Typically unshielded or minimally shielded
Insulation	Designed to withstand higher voltage spikes and heat	Rated for lower frequency and temperature conditions
Conductor Design	Twisted conductors with symmetrical grounding to reduce noise coupling	Parallel conductors that increase EMI radiation
Grounding	Built-in ground conductors or copper tape shields integrated into the cable	May rely on external or inadequate grounding paths

So how do you choose the right one? Check out our blog post and knowledge base article on "How to Select the Proper VFD Cable".

A Variable Frequency Drive (VFD) controls the speed and torque of electric motors by varying the frequency and voltage supplied. However, the high-frequency switching in VFDs generates electrical noise, voltage spikes, and reflected waves that can damage components or interfere with nearby systems.