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Schaffner is offering digital Ecosine active harmonics filters (AHFs) that provide real-time mitigation of harmonics and immediate compensation for voltage dips and reactive power surges.

Ecosine active filters continuously measure and analyse 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 filters minimises the risk of downtime and process interruptions.

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 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 three-phase/three-wire as well as three-phase/four-wire configurations for 480V and 400V grids respectively and with rated compensation currents from 30A to 300A.

All three-wire filters are UL listed.

The IP20 50A and 100A filters are suitable 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.

The compact packaging of Ecosine active filters makes them suitable for use where space is limited.

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