Epcos' SineFormer series of EMC output filters has been extended by a range designed for applications up to a rated voltage of 760 V. The new B84143V*R290 spectrum of filters is available in current stages of 95 A, 180 A and 320 A. Depending on their type, they are operated at clock frequencies from 2,5 kHz.
The technology means that shielded motor leads are unnecessary and bearing currents significantly reduced. Compared with the use of shielded lines, savings in system costs already begin from a lead length of less than 100 m.
Because the filters differ from their conventional sine-wave counterparts by dispensing with shielded lines, breakeven can already be reached from about 25 m. To this consideration must be added the significant technical benefits of this technology such as an IP20 package, noise reduction and no feedback to the DC link circuit.
Typical applications are crane installations, pumps, HVAC, retrofitting of existing equipment for converter operation, and all applications using long shielded motor leads.
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