Sine wave filter targets 600VAC and 690VAC drives
The sine wave output filter Series FN5040HV offered in an open compact frame design smoothes the rectangular PWM output voltage of modern drives and provide the motor with a sine wave voltage with low residual ripple under 5%. This largely reduces premature ageing or destruction of the AC motor due to high dv/dt, over-voltages, bearing currents or overheating due to extra losses. Expensive downtime, premature service and maintenance costs can be reduced too. The sine wave filters FN5040HV are available in 14 current ratings between 13 and 1320A and are specified for typical network supplies of 3x690VAC and 3x600VAC for up to 1200kW drives power. Higher power rated drives are preferably operated at lower switching frequencies to minimise power losses. Schaffner’s sine wave filters are designed to operate at 1.5kHz for drives over 355kW. The sine wave filter is designed according to UL standard requirements and planned to be certified.
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