IEC TS 60076-20:2017/COR1:2018
(Corrigendum)Corrigendum 1 - Power transformers - Part 20: Energy efficiency
Corrigendum 1 - Power transformers - Part 20: Energy efficiency
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Standards Content (Sample)
IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
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IEC TS 60076-20
Edition 1.0 2017-01
POWER TRANSFORMERS – PART 20: ENERGY EFFICIENCY –
CO RRI G E ND
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IEC 60076-25:2023 applies to dry type natural air-cooled resistors, for neutral grounding of transformers and generators, in order to limit the earth fault current in power systems by means of metallic resistive elements.
For the purposes of this document, the resistor can be:
used alone or in combination with other electrotechnical products not covered by this document, such as (but not limited to): a step-down single-phase transformer, an open triangle or zig-zag transformer (where the neutral point is not available) and a Petersen coil reactor (in order to increase active power contribution to the fault or reduce time constant for proper protection operation or both);
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It outlines the operation requirements for the electrical and hydraulic performance, mechanical design, routine testing and type testing. Additionally, performance and dimensions of preferred sizes of pump sets are specified in informative annexes.
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