AC Power Cables Increase Efficiency of VFDs

Asserting that power cables play an important role in the safe and reliable operation of AC drive systems, the company has announced the Topflex-EMV-3 Plus cable, which has three control conductors up to 150 mm2 (350MCM) and three ground wires. The company also states that AC motor drive technology has reduced the size and increased the efficiency of variable frequency drives (VFD). Problems caused by this new technology include high voltage spikes and electromagnetic interference (EMI). In the new cable, EMI protection is accomplished by a dual shield of aluminum foil, surrounded by a tinned copper shield. Applications are typically in the automobile, food, packaging and printing industries. HI-TECH CONTROLS, INC., Englewood, CO. (800) 677-8942.