ASTM D1169电绝缘液体电阻率(电阻系数)的标准测试方法

ASTM D1169 Standard Test Method for Specific Resistance (Resistivity) of Electrical Insulating Liquids
ASTM D1169电绝缘液体电阻率(电阻系数)的标准测试方法

The resistivity of a liquid is a measure of its electrical insulating properties under conditions comparable to those of the test. High resistivity reflects low content of free ions and ion-forming particles, and normally indicates a low concentration of conductive contaminants.

1. Scope
1.1 This test method covers the determination of specific resistance (resistivity) applied to new electrical insulating liquids, as well as to liquids in service, or subsequent to service, in cables, transformers, circuit breakers, and other electrical apparatus.
1.2 This test method covers a procedure for making referee tests with dc potential.
1.3 When it is desired to make routine determinations requiring less accuracy, certain modifications to this test method are permitted as described in Sections 19-26.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See 17.6 for a specific warning statement.
 
2. Referenced Documents (purchase separately)
ASTM Standards
ASTM D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
ASTM D257 Test Methods for DC Resistance or Conductance of Insulating Materials
ASTM D923 Practices for Sampling Electrical Insulating Liquids
ASTM D924 Test Method for Dissipation Factor (or Power Factor) and Relative Permittivity (Dielectric Constant) of Electrical Insulating Liquids
Index Terms
resistivity; specific resistance; Electrical insulating liquids; Electrical resistance/resistivity--insulating materials; Specific resistance (resistivity);

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 來源：防火網　發布時間：12/9/2013 點擊次數：1106