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Product category: Industrial Drives/Controls
News Release from: Gambica | Subject: Motor Insulation Voltage Stresses report
Edited by the Engineeringtalk Editorial Team on 14 June 2000

New report explains motor stress with
inverters

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A 24-page technical report on 'Motor Insulation Voltage Stresses Under PWM Inverter Operation' has been produced by a joint working group of GAMBICA, the Association for Instrumentation, Control, Auto

A 24-page technical report on 'Motor Insulation Voltage Stresses Under PWM Inverter Operation' has been produced by a joint working group of GAMBICA, the Association for Instrumentation, Control, Automation and the REMA Rotating Electrical Machines Association Motor winding insulation experiences higher voltage stresses when used with an inverter than when connected directly to the ac mains supply

As well as operating principles of PWM inverters, this authoritative report details transmission line effects in the supply cables between inverter and motor and the impact of voltage peaks at the motor terminals.

Advice is given on the capability of motors to withstand inverter supplies up to 690V ac, and when preventative measures to control peak voltage and/or excessive capacitive currents should be taken.

Copies are available free through Brigid Blacker at GAMBICA.

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