Drive Series Transformers

Phase shifting isolation transformers and autotransformers designed to produce cancellation of the characteristic harmonics of 3-phase rectifiers to produce effective 12-pulse 18-pulse, and 24 pulse schemes.Designed to replace standard drive isolation transformers, the Drive Tamer™ is built to not only withstand the harsh harmonic environment produced by Variable Frequency Drives (VFD), but to also induce cancellation of harmonics upstream and thereby reduce voltage distortion throughout the distribution system.
By alternating 0° phase shifting models with 30° models, 5th and 7th harmonics are cancelled upstream. Where 3 loads are being serviced +20° , 0° , -20° models can reduce 5th, 7th, 11th and 13th harmonics, thereby dramatically reducing the voltage distortion these harmonics produce.