WARNING:
The use of this Standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety problems 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.
1 Scope
This Standard specifies a method for the extraction of corrosive sulfur compounds in electrical insulating oils from petroleum origin.
This Standard is applicable to electrical insulating oils.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this Standard. Unless otherwise specified in the Standard definitely, the following referenced standards are all currently valid.
GB/T 5096Petroleum products--Corrosiveness to copper--Copper strip test.
GB/T 6682Water for Laboratory Use-Specifications.
3 Principle
A strip of polished pure copper is subjected to contact with the oil under test at 140℃ in the absence of air. At the end of the test period, the strips examined for color change, and assessed by comparison with Table 1.
