DriveRx Cable for VFD Systems

Variable Speed Drive Cables

In today’s competitive business environment, choices that offer reliability, durability, performance, and cost savings are more important than
ever. For industry, these factors and the energy savings associated with the use of variable frequency drives (VFDs) offer considerable economic and technical benefits. A key component in their optimal performance is the choice of the appropriately designed and sized wire and cable system, which goes a long way to ensure the reliable operation of VFDs in often harsh electrical and mechanical environments.

What is a Variable Speed Drive?

Basically, a variable speed drive is a piece of equipment that regulates the speed and rotational force, or torque output, of an electric motor.
By controlling the AC frequency with a variable frequency drive, the actual motor speed can be controlled and varied as necessary. This ability
to control the motor results in improved energy efficiency and improved motor performance, especially for speed control during start-up and reversing.

The background and technology

Presently, there are millions of motors in use in industry all over the world. They are essential in virtually any industrial process today. They are used for irrigation, sewage plants, in sawmills and paper plants, mining, food production, assembly lines, ski-lifts, conveyors and ventilation systems, to name just a few.

And, in the past, when it came to controlling motors, it was as simple as switching them off and on, causing them to consume the maximum
level of energy and endure the most stress. While this and other simplistic solutions still frequently occur (such as when using two-speed
motors) this is not the best approach for energy efficiency and associated costs savings.

Its been estimated that 65 – 70 percent of industrial electrical energy is consumed by motors. To maximize the return on this amount, the
adaption of variable speed drives has allowed industry to save greatly on energy consumption. Of course, the companion benefits to that are reduced CO2 emissions, reduced maintenance costs, and greater motor reliability and performance.

In the following paper from Nexans Canada, you will learn how Variable Frequency Drives (VFDs) are advanced control devices and are also known as adjustable speed, variable speed, pulse width modulated, and vector drives. VFDs are the modern way to control the speed of AC motors, and are the most popular new and replacement drives for use in virtually all industrial and commercial applications. The new drive technology brings challenges as well as benefits. Nexans DriveRx® cable was developed specifically to connect the motor to the drive.
The new VFD cable is specially designed to avoid some of the problems experienced in these modern drive systems.

> Cable Study

> Canadian Copper Magazine No. 157 Article