Insulating liquids. Measurement of relative permittivity, dielectric dissipation factor (tan δ) and d.c. resistivity Ingestion-build-109673 BS 5431 on the specification

BS 5431 on the specification for bending springs for copper tubes is also useful for users of the copper tubes such as:

BS 984 introduces provisions for the metrological control of packaged goods including knitting yarn and rug yarn

5 Verification and compliance processes for SAM

BS 718:1991 includes some technical changes with respect to BS 718:1979

Greater thicknesses may be agreed

Insulating liquids. Measurement of relative permittivity, dielectric dissipation factor (tan δ) and d.c. resistivity Ingestion-build-109673 BS 5431 on the specification1 Scope This International standard describes methods for the determination of the dielectric dissipation factor (tan ), relative permittivity and d. c. resistivity of any insulating liquid material at the test temperature. The methods are primarily intended for making reference tests on unused liquids. They can also be applied to liquids in service in transformers, cables and other electrical apparatus. However the method is applicable to a single