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  • BS 4999-72:1972

BS 4999-72:1972

Specification for general requirements for rotating electrical machines-Built-in thermal protection for electric motors rated at 660 volts a.c. and below

BSI Group, 02/14/1972

Publisher: BS

File Format: PDF

$125.00$251.46


Published:14/02/1972

Note:This product is unavailable in Ukraine, Russia, Belarus

Classifies types of protection, specifies winding temperatures for steady overload and stalled conditions. Recommends thermistor reference temperatures. Characteristics for thermostats, thermistors and thermistor control units with appropriate tests. Thermistors are of positive temperature coefficient. An appendix gives typical characteristic curve.

All current amendments available at time of purchase are included with the purchase of this document.

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