IS 11256 : Part 1 : 1985 Method of test for determination of thermal endurance of insulating varnishes: Part 1 Electric strength method

1 Scope

1.1 This standard (Part 1) covers a test method for determiningthe thermal endurance of electrical insulating varnishes by meansof coating on glass cloth and measuring electric strength beforeand after heat ageing.

2 References

IS 2584 :1963Method of test for electric strength of solidinsulating materials at power frequencies

IS 2260 :1973Preconditioning, conditioning and test ofsolid electrical insulating materials

IS 8504 : Part 1 :1977 Guide for determination of thermalenduranceproperties of electrical insulating materials:Part 1 Temperature indices and thermalendurance profiles

IS 10026 : Part 1 :1981 Specification for insulating varnishescontaining solvents:Part 1 Definitions and general requirements