railPrime

• Canadian Pacific shareholders vote for KCS merger plan (12/9/2021)

• Experienced mechanical engineers

3/14/2016

Schaefer: Active Harmonic Filters and Advanced Display & Measurements

Schaefer Inc. has introduced a series of Active Harmonic Filters and Advanced Display & Measurements Functionally. Three- and four-wire Active Harmonic Filter modules/systems are designed to meet IEEE-519 (5 percent TDD) and Mil-Std-1399 (less than 3 percent THDi).

The Power Balance & Kxxx Series family are scalable and offer a cost-effective solution for improving power quality for wide range of heavy industrial and military applications.

Communication connections can be made via Ethernet TCP/IP, Ethercat system and ModBus. New advanced functions include resonance frequency detection and automatic protection, trace waveform display/capture (filter current, load current, grid current & voltage), and a new series of high IP/NEMA rated air and liquid cooled active harmonic filters (modules & systems).

According to Schaefer, product highlights include individual harmonic compensation adjustment, rebuilding distorted three phase currents/voltages, four-wire zero sequence current compensation, power factor (phase displacement) correction/adjustment, balancing 3 phase currents, and 60A to 1000s amps of compensation current.