Reciprocating internal combustion engine driven alternating current generating sets - Part 11: Rotary uninterruptible power systems - Performance requirements and test methods
Direct acting indicating analogue electrical measuring instruments and their accessories - Part 5: Special requirements for phase meters, power factor meters and synchroscopes
Power transformers - Part 11: Dry-type transformers
Power transformers - Part 11: Dry-type transformers
Power transformers - Part 19-1: Rules for the determination of uncertainties in the measurement of the losses of power transformers
Power transformers - Part 22-1: Power transformer and reactor fittings – Protective devices
Power transformers - Part 22-2: Power transformer and reactor fittings - Removable radiators
Power transformers - Part 22-3: Power transformer and reactor fittings - Insulating liquid to air heat exchangers
Power transformers - Part 22-4: Power transformer and reactor fittings - Insulating liquid to water heat exchangers
Power transformers - Part 22-5: Power transformer and reactor fittings - Electric pumps for transformers
Power transformers - Part 22-6: Power transformer and reactor fittings - Electric fans for transformers
Power transformers - Part 22-7: Power transformer and reactor fittings - Accessories and fittings
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