Motor drive output filters protect motor windings

Standard dv/dt filter series for 690/600V AC motor applications from Schaffner protect against excessive voltage peaks and inadmissible voltage pulse rise times generated by the inverter PWM output voltage. The FN 5060 HV dv/dt filters are designed according to the company’s patented concept which enables dv/dt filter damping performance without using resistors or capacitors. This simplifies the installation, saves mounting space and is a reliable long life solution, says the company.

The filters offer minimum power loss, low voltage drop to help maximise the system efficiency.

Applications can be found in chemical, cement, metal, oil and gas and, mining as well as applications in buildings and infrastructure environments (pumps, fans, HVAC).

AS well a controlling pumps and fans with short motor cables, the FN 5060 filters are also recommended for applications with frequent braking, danger of flash-over voltage and motors running at high temperature

New and existing motors and installations will benefit from a longer life time and a continuous long lasting operation, if the dv/dt filters are used with variable speed drives, says the company.

The standard 690/600V AC filter series are available with current ratings from 16 to 1,200A. Higher or other ratings can be engineered and delivered on demand.

All models are CE, UL, CSA and ENEC-approved and RoHS-compliant.

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