Insulating liquids. Measurement of relative permittivity, dielectric dissipation factor (tan δ) and d.c. resistivity Ingestion-build-109673 5 Verification and compliance processes

5 Verification and compliance processes for SAM

data structure and relationships and supports a methodology that is extensible

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

Greater thicknesses may be agreed

Contents of BS ISO 10263-5:

Insulating liquids. Measurement of relative permittivity, dielectric dissipation factor (tan δ) and d.c. resistivity Ingestion-build-109673 5 Verification and compliance processes1 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