posted by William R. Stott
Published: April 06, 2009
Schaffner has introduced its digital ECOsine Active Harmonics Filters that provide real-time mitigation of harmonics and immediate compensation for voltage dips and reactive power surges. ECOsine Active filters continuously measure and analyze disturbances in the power network and provide an exactly opposite compensation current. In doing so, the filters actively adapt to changing network topologies and respond in less than half a millisecond, before damage from the disturbances can occur.
The improved power quality provided by the new filters minimizes the risk of downtime and process interruptions, saving energy and money. In addition to the global or selective mitigation of harmonic currents up to the 50th order, ECOsine Active filters are able to perform targeted power factor correction. This highly dynamic process provides the required reactive power within microseconds, faster than traditional automatic capacitor banks.
ECOsine Active filters are compatible with the stringent international harmonics standard IEEE 519 as well as with local utility codes. In addition, their electrical infrastructure is unburdened, preventing potential overheating of transformers, motors or cables and reducing premature wear of electrical equipment.
The filters are available in 3-phase/3-wire as well as 3-phase/4-wire configurations for 480V and 400V grids respectively and with rated compensation currents from 30A to 300A. All 3-wire filters are UL listed.
The IP20 50A and 100A filters are suited for panel integration, where they can be installed right by the non-linear load. The IP54 rating of the 300A unit provides protection against dust and environmental influences, perfect for harsh industrial applications.
ECOsine Active filters are designed for building technology and HVAC installations; data, UPS and banking centers; water/wastewater treatment facilities as well as heavy industry and welding applications.
The ECOsine Active filters are an expansion to Schaffner's ECOsine filter series, introduced in May 2008 with the company's ECOsine Passive harmonics filters.
For more information:
Schaffner EMC Inc.
52 Mayfield Ave
Edison, NJ 08837
Phone: (732) 225-9533
Fax: (732) 225-4789