1. Scope
1.1 This test method describes testing of new electrical insulating liquids as well as liquids in service or subsequent to service in cables, transformers, oil circuit breakers, andother electrical apparatus.
1.2 This test method provides a procedure for making referee tests at a commercial frequency of between 45 and 65Hz.
1.3 Where it is desired to make routine determinations requiring less accuracy, certain modifications to this test method are permitted as described in Sections 16 to 24.
1.4 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 to determine the applicability of regulatory limitations prior to use. Specific warnings are given in 11.3.3.
1.5 Mercury has been designated by the EPA and many state agencies as a hazardous material that can cause nervous system, kidney and liver damage.Mercury,oritsvapor, maybe hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products.
2. Referenced Documents
2.1 ASTM Standards:
D150 Test Methods for AC Loss Characteristics and Permittivity(Dielectric Constant) of Solid Electrical Insulating Materials
D923 Practices for Sampling Electrical Insulating Liquids
D2864 Terminology Relating to Electrical Insulating Liquids and Gases
D2865 Practice for Calibration of Standards and Equipment for Electrical Insulating Materials Testing
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
2.2 IEEE Standard:
Standard 4 IEEE Standard Techniques for High-Voltage Testing 3
3. Terminology
3.1 Definitions - Definitions of terms used in this test method are given in Terminology D2864. Also refer to Test Methods D150 for detailed discussion of terms.
