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  • BS 4999-111:1987

BS 4999-111:1987

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

BSI Group, 02/27/1987

Publisher: BS

File Format: PDF

$44.00$88.90


Published:27/02/1987

Pages:12

File Size:1 file , 440 KB

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.

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