Active Harmonic Filtering for 200/250/300 Amp Applications

Schaffner EMC introduces the ECOsine® Active 200/250/300A- a harmonic filter which provides harmonic compensation in real-time for demanding industrial and commercial environments.  With a capacity of 300A, operating at 480VAC (+/- 10%), the connection-ready 200/250/300A (3-wire) cabinet models include forced air cooling and internal liquid cooling for the power electronics.  They are capable of supporting large production facilities.  Freestanding enclosure design and IP54 (NEMA 12 indoor) protection ensure fast and easy servicing, and a designed service life of up to 100,000 hours ensures long service intervals.  They are ideal for manufacturing environments with nonlinear loads, such as variable frequency-motor drives, Uninterruptible Power Supplies (UPS), chillers and other HVAC equipment, data centers and banking/heavy computing, and more.

This proven equipment uses digital technology to monitor and dynamically correct harmonics up to the 50th order in less than 300µs eliminating disturbances before they can cause problems.  ECOsine® Active Filters compensate for individual disturbance patterns in a targeted manner and automatically adapts to changing network loads.

Up to 5 units can be installed in parallel to attain optimal results, for a maximum of 1500A harmonic compensation. Filters also provide reactive current support and load balancing.  Proven ECOsine® Active 200/250/300A Filters are equally suited for new installations and retrofits.

Harmonics – A Silent But Deadly Problem

Harmonics are generated by nonlinear components in electrical systems, which distort the sine wave.  Increasing usage of power electronics causes a corresponding increase in voltage distortion, or harmonics.  Electrical components like, variable frequency drives, Uninterruptible Power Supplies, and inverters, all introduce harmonics of differing orders into the electrical system.  When harmonics are present they can manifest themselves with short-term and long-term consequences.  High harmonic distortion can cause failures or malfunctions of electrical devices.  Harmonics also cause a temperature rise in the electrical network and in equipment, resulting in losses and shorter service life.  An active harmonic filter, like the ECOsine® Active 200/250/300A, cancels and injects current to correct the sine wave, before the harmonics can cause any damage to the electrical system or equipment.

Schaffner EMC, with US operations headquartered in Edison, NJ, is part of The Schaffner Group – a worldwide leader in the fields of electro-magnetic compatibility (EMC), power quality (PQ) and engineered transformers.  From a global innovation and development center in Luterbach, Switzerland, the company develops leading edge products which are manufactured in facilities worldwide.  Their PQ product line includes active and passive harmonic filters, along with sine wave filters, which allow the efficient and reliable operation of electrical and electronic equipment and systems.  For additional information visit www.schaffnerusa.com, write to them at Schaffner EMC Inc., 52 Mayfield Avenue, Edison, NJ, 08837, or call (800) 367-5566 ext 276.