BS 903-C4:1983

Superseded

View Superseded by

Physical testing of rubber Determination of electric strength

Available format(s)

Hardcopy , PDF

Superseded date

15-05-1995

Language(s)

English

Published date

30-09-1983

Publisher

British Standards Institution

Covers test pieces, electrodes, test assemblies, electrical apparatus, conditions, procedures, expression of results, and test report, for vulcanized rubber and plastics.

This Part of this British Standard gives two methods of determining the short-time electric strength (breakdown voltage) of insulating vulcanized rubber (including ebonite) and of solid plastics materials using a voltage with a nominal frequency of 50 Hz.

One method of determining electric strength is by rapidly increasing the voltage until breakdown occurs and the other is by a steady increase in the applied voltage step-by-step at 20 S intervals.

Test pieces and electrode systems are specified to provide tests on a variety of materials and forms of material. Tests are carried out normal and parallel to the planes of sheet materials and tubes and parallel to the axes of rods.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.

Committee	PRI/22
DevelopmentNote	Also numbered BS 2782: Part 2: Methods 220 and 221: 1983. Replaces methods 201A to 201G of BS 2782: 1970
DocumentType	Standard
Pages	16
PublisherName	British Standards Institution
Status	Superseded
SupersededBy	BS 2918-2:1994

BS 2782-0:1982	Methods of testing plastics Introduction
IEC 60243:1967	Recommended methods of test for electric strength of solid insulating materials at power frequencies
ISO 291:2008	Plastics Standard atmospheres for conditioning and testing