BSI BS 4999-111:1987

Withdrawn Revision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

Best Price Guarantee Feb 27, 1987 English 12 Pages

This Document Has Been Superseded

A newer publication replaces it: BSI BS EN 60034-11


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BSI 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

PUBLISH DATE 1987
PAGES 12
BSI BS 4999-111:1987

WITHDRAWN, 2/9/2005

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 a typical characteristic curve.

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