Blog > Automation > Going the Distance: SineWave Filter Applications
12/20/22 | Scott Savage, Rexel Technical Consultant
This post is part III of our In and Out Trilogy:
Read Part I here
Read Part II here
Imagine the motor of your operation is so far away you need a vehicle to measure the distance. You are concerned about the cost of the wire and the voltage drop from one end to the other. You want to size the wire to handle the current, but not oversize the motor, which will drive the cost up. You are so careful with the details – type of cable, length, and sizing.
The motor is rated for MG1 and is the best you can get for voltage spiking, the cabling is VFD cable, and you are feeling this application. You have made all the right decisions and have slain the dragon – or have you?
You have heard of all the sales pitches on “gadgets” and “extras” – All those scare tactics of long lead lengths and motors. Everyone wants to sell you that extra gadget that all the technical nerds are going to question you on – “why did you fall for that?” – and are the same critics who will denounce your design when the motors are failing thousands of feet away. Some will say “even I knew better than that” after googling the topic and acting like an expert. Let’s eliminate both scenarios and you can have them google this blog.
The SineWave filter can be added at any time with no worries. Just have available space, time, and money. When you have more than 1,000 feet of motor cable you must add the filter. The waveform is exactly what you would get from the utility on the output of the drive.
TRANSCOIL MOTOR SHIELD
Shown above are two manufacturers – Transcoil (TCI) and MTE Corporation. Both specialize in power-quality products and make SineWave filters.
Motor failures can cause a tremendous financial burden to replace due to long motor leads and incorrect wire type choices. SineWave filters address both these issues and should be considered an excellent solution to slaying the dragon that is scorching the first turns on your motor windings. Spend your money wisely and be safe – prevent unnecessary long-line repairs.
Questions? Need assistance? Contact us today!