The Allen-Bradley PowerFlex 755TL drives from NHP expand the portfolio of the PowerFlex 753 and 755 AC drives, offering low harmonic solutions along with precise motor control. The drive is designed to mitigate harmonics using active front-end technology and an internal harmonic filter.
Harmonic distortion created by an electrical piece of equipment will have negative impacts, such as motors running at higher temperatures, leading to increased repair and replacement costs; circuit breakers tripping erratically; interference in communications; and improper operation of sensitive control equipment. Beyond the facility, harmonic power distortion may cause problems for commercial or residential neighbours on the electrical grid. As a result, the user may be required to conform to standards for low harmonic distortion at a point of common coupling (PCC).
The drive is designed to meet and exceed local standards like IEEE 519 in terms of maximum allowable percentage of the total harmonic distortion (THD). In addition, the device can correct power factor to reduce energy-related expenses. The combination of lower harmonics and power factor correction reduces the need to oversize one’s electrical power equipment.