BS 4999-111:1987
Withdrawn
Date published:
General requirements for rotating electrical machines, Specification for built-in thermal protection for electric motors rated at 660 volts a.c. and below
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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BS 4999-111:1987
Get this standard
Prices exclude GST
PDF
( Single user document)
$149.57 NZD
HardCopy
$182.61 NZD