Compact, 530Vac 3-line EMC Filters Handle up to 280A

TDK Corporation has expanded the B84243 series of EPCOS 3-line EMC filters to include 10 new types for currents of up to 280A. All 18 types in the series are designed for a rated voltage of 530Vac. The performance of this series of filters has been optimized for adherence to limit values in accordance with EN 61800−3:2004+A1:2011 for motor cable lengths of either up to 25m (C1) or 50m (C2).

The metal cases of the filters are designed with IP20 protection and, depending on the type, have compact dimensions of between 190 x 40 x 95 mm and 450 x 170 x 230 mm. Thanks to the highly saturation resistant chokes, parasitic asymmetric currents can be reliably controlled even in the case of longer motor cables.

A further advantage of the new B84243 series is the low leakage current that also permits operation in a 30mA RCD environment. For smaller, hand-operated equipment the leakage current must be below 3.5mA.

For this reason, the 3-A version (B84243A8003U000) has been designed for a leakage current of 1.9mA at 400Vac. One important safety aspect is the short discharge time to <60V within one second for the types rated at up to 44A.

Typical applications of the new filters are frequency converters for the drives of elevators, pumps, conveyor systems, and HVAC systems.

Main features and benefits

• Compact dimensions
• Adherence to limit values in accordance with EN 61800−3:2004+A1:2011
• Low leakage currents for operation within a 30mA RCD environment
• Short discharge time to <60V within one second for the types rated at up to 44A