BS 4542:1970

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Method for determination of loss tangent and permittivity of electrical insulating materials in sheet form (Lynch method)

Published By	Publication Date	Number of Pages
BSI	1970	12

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Categories: 29.035.01 - Insulating materials in general, BSI

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Description

This British Standard describes the Lynch method for the determination of the loss tangent and the permittivity of insulating materials at frequencies of 1 kHz to 100 kHz at normal room temperatures. It gives details of the apparatus and of the procedure to be followed.

The frequency range can be extended downward to 50 Hz unless the surface resistivity of the specimen is low (e.g. 10¹⁰ Ω). It can be extended upward to 1 MHz by taking the precautions suggested in Clause 6 and in Appendix A.

Accuracy and range, description of the apparatus, the form of specimen, procedures to be followed and the necessary calculation for determination over a frequency range of 1 kHz to 100 kHz. Precautions are given for extending the range to 1 MHz. Supplements the Hartshorn and Ward method of BS 2067.

Additional information

Status	Under Review
Pages	12
Publication Date	1970-01-30
ISBN	0 580 05985 5
Related National Standard Of	IEC 60250:1969
Standard Number	BS 4542:1970
Title	Method for determination of loss tangent and permittivity of electrical insulating materials in sheet form (Lynch method)
Descriptors	Sheet materials, Test equipment, Electrical insulating materials, Dielectric measurement, Solid electrical insulating materials, Test specimens, Permittivity measurement, Electrical testing
Publisher	BSI
Committee	GEL/15
ICS Codes	29.035.01 - Insulating materials in general

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BS 4542:1970

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