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Compact EMC filters meet latest industrial motor drive needs
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EMC filters designed to meet the most demanding industrial motor drive applications have been developed by world-leading specialist, Schaffner Limited. The compact new filters target the limits given by Amendment A11 of the power drive product family Standard EN61800-3. |
Amendment A11 to the EMC product standard EN61800-3 for variable speed electrical power drives brought about a number of changes and more precise definitions as compared to the standard published in 1997. Since conformance with the EMC legislation is a decisive selection criterion for most users of frequency converters, drive manufacturers are urged to interference suppress their products in accordance with the pre-scribed limiting values. To simplify this task, Schaffner offers the optimised FN3270, which, in addition to full compliance with the limit, also provides improved connection technology, simplified handling, decreased space requirements and generally enhanced practical usability.
With a more compact construction than any predecessor, the lightweight FN3270 filters combine the industry’s smallest footprint with optimum performance. Installation and electrical connection is both quick and easy. All filters from 10A to 100A are equipped with solid safety terminals, providing sufficient clamping range for the large conductor cross sections common in industrial applications. For the first time ever, all filters from 150A to 1000A with bus bar connectors can be retrofitted with optional protective Plexiglas covers. Available as accessory items, the non-conductive covers protect installers, fitters and inspectors from accidental contact with life conductors while retaining a view of the connection for inspection at any time.
User-friendly selection and deployment lie at the heart of these innovative components. To ensure rated value over-specification is avoided, the range is broken down into 14 different current types, in convenient increments from 10A to 1000A. The filters allow a maximum operating voltage of 3x520VAC and can be operated fully loaded in 50°C environments.
Comprehensive details of the new filters and how they relate to EN61800-3 are available on request from the company in the form of an in-depth Application Note entitled Motor Drives - EMC Filters in Industrial Applications and in the individual product datasheet.
For more information on the full range of Schaffner products available from Anglia please call +44 (0)1945 474747 or email info@anglia.com