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The Schaffner Group introduces the ecosine max series of passive harmonic filters

03 April 2020

Key passive power quality products for higher power ranges found in demanding drive applications.

Schaffner is pleased to announce its new ecosine max passive harmonic filter series. These new filters are designed reliably to mitigate excessive harmonics in most demanding applications.

The new ecosine max filter series FN3470/71, FN3480/81, FN3472/73 and FN3482/83 are based on Schaffner’s award-winning ecosine platform and are available with versions for 400 VAC and 480 VAC, and 50 Hz and 60 Hz networks.

They are a key passive power quality product for the higher power ranges (250KW-500KW) that can be found in demanding drive applications. The three-chokes versions FN3470/80/72/82 are designed to achieve <5% harmonic distortion current (THDi) at rated power, even when using drives without DC-link choke. 

The more economical two-chokes versions FN3471/81/73/83 are designed to achieve <5% total THDi at rated power if used with drives including at least 4% DC-link choke. They can also be applied to drives without DC-link choke reaching a THDi of 8%. 

Schaffner’s ecosine max is guarantees compliance with the requirements of IEEE-519 and other stringent national or international power quality standards. When using ecosine max filters, the electrical infrastructure is unburdened and its utilisation is much more efficient and reliable. In addition, the service life cycle of electrical equipment in the end system is extended and energy costs can be reduced. 

Schaffner is committed to customer satisfaction, innovation and continuous improvement and its power quality components always aim for the best tailored solutions, aligning product offerings with the international market requirements and customer expectations. Recognised as the industry standard filters for 6-pulse rectifiers and motor drives, the ecosine max filter series are designed to be the most compact open panel solutions that are ready to be integrated into standard or customised electrical cabinets. All ecosine max filters are CE-marked, UL listed and RoHS compliant.

All versions are offered either with a circuit breaker switch protecting the trap capacitor bank or with a trap disconnect jumper to allow any third-party circuit breaker switch to be installed. This protection ensures the operational safety of the device, even under all circumstances. 

Schaffner power quality is more than just products. The company provides solutions for power efficiency and reliability along with leading pre- and after-sales services. All ecosine max filter series, in common with all Schaffner active and passive harmonic filters, are already fully supported in Schaffner’s power quality simulator SchaffnerPQS3. 

For further information, please visit or get in touch with your local Schaffner sales point or Schaffner partner for individual support.

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