BS 5797:1986

National foreword
Committees responsible
Section one - General
1 Scope
2 General notes on the methods
Section two - Method A
3 Outline of method
4 Apparatus
5 Reagents
6 Preparation of the apparatus
7 Procedure
8 Calculation of the results
9 Number of tests
10 Report
11 Precision
Section three - Method B
12 Outline of method
13 Apparatus
14 Reagents
15 Preparation of apparatus
16 Procedure
17 Calculation of the results
18 Number of tests
19 Report
20 Precision
Figures

Two procedures for measuring the tendency of gas to be evolved or absorbed when an oil is subjected to sufficiently high electrical stress to cause an electrical discharge.

This standard describes two procedures each using different apparatus to measure the tendency of insulating liquids to evolve or absorb gas when subjected, in cells having specific geometries, to electrical stress of sufficient intensity to cause an electric discharge through a gas phase in which a gas-oil interface is located.

The methods described in this standard are suitable for purchase specifications, general selection of insulating liquids, product development and quality assurance.

WARNING! Attention is called to national regulations associated with the use of high voltage, hydrogen and solvents.