Low-voltage fuses - Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) - Examples of standardized systems of fuses A to K ![]() Measuring relays and protection equipment - Common requirements Semiconductor converters - General requirements and line commutated converters - Specifications of basic requirements Power transformers - Loading guide for Dry-type power transformers Power transformers - Dry-type transformers Power transformers - Determination of sound levels Power transformers - Loading guide for oil-immersed power transformers Power transformers - Ability to withstand short-circuit Power transformers - Insulation levels, dielectric tests and external clearances in air ![]() Power transformers - Temperature rise for liquid immersed transformers Insulation co-ordination - Definitions, principles and rules Direct acting indicating analogue electrical measuring instruments and their accessories
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