High power AC line reactors cut weight

February 19, 2019 // By Nick Flaherty
High power AC line reactors cut weight
Schaffner has launched its latest series of high power AC line reactors with impedance down to 2% and half the weight of previous units.

The RWK 3044 and RWK 3062 are designed for 400 VAC and 690 V AC power networks, and provide impedance of 4% and 2%, respectively.

AC line reactors are an economical solution to reduce harmonic currents, limit inrush currents and to protect variable frequency drives (VFD). An overall improvement of the true power factor and the quality of the input current waveform can be achieved by their implementation. By incorporating RWK 3044 and RWK 3062 line reactors severe damaging phenomena such as commutation notches are reduced to comply with the recommended notch depth and notch area as per IEEE519-2014 (C.1). This enables higher utilisation of the electrical infrastructure, extends the service life cycle of electrical equipment and reduces energy costs.

The RWK 3044 AC line reactors are rated from 380 VAC to 415 VAC, with current ratings from 2 A to 1000 A, while the RWK 3062 series are rated from 500 VAC to 690 VAC with current rating from 1.5 A to 870 A. They are available as open frame product (IP 00) and can be operated at an ambient temperature of 45°C without derating and up to 100°C with derating. All RWK 3044 and RWK 3062 reactors are CE-marked and RoHS compliant. The new reactors are easy to install and maintain and are fully supported in Schaffner’s power quality simulator Schaffner PQS3 for a quick and accurate performance check.


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