Abstract

Corrigendum 1 - Power transformers - Part 20: Energy efficiency

General Information

Status: Published
Publication Date: 11-Jan-2018

ICS: 29.180 - Transformers. Reactors

Technical Committee: TC 14 - Power transformers

Current Stage: PPUB - Publication issued
Start Date: 12-Jan-2018
Completion Date: 14-Mar-2018

Relations

Corrects: IEC TS 60076-20:2017 - Power transformers - Part 20: Energy efficiency
Effective Date: 05-Sep-2023

IEC TS 60076-20:2017/COR1:2018 - Corrigendum 1 - Power transformers - Part 20: Energy efficiency
Released:1/12/2018 - Page 1 preview

IEC TS 60076-20:2017/COR1:2018 - Corrigendum 1 - Power transformers - Part 20: Energy efficiency
Released:1/12/2018 - Page 2 preview

IEC TS 60076-20:2017/COR1:2018 - Corrigendum 1 - Power transformers - Part 20: Energy efficiency
Released:1/12/2018 - Page 3 preview

Technical specification

IEC TS 60076-20:2017/COR1:2018 - Corrigendum 1 - Power transformers - Part 20: Energy efficiency Released:1/12/2018

English language

1 pages

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Frequently Asked Questions

What is IEC TS 60076-20:2017/COR1:2018?

IEC TS 60076-20:2017/COR1:2018 is a technical specification published by the International Electrotechnical Commission (IEC). Its full title is "Corrigendum 1 - Power transformers - Part 20: Energy efficiency". This standard covers: Corrigendum 1 - Power transformers - Part 20: Energy efficiency

What is the scope of IEC TS 60076-20:2017/COR1:2018?

Corrigendum 1 - Power transformers - Part 20: Energy efficiency

What ICS categories does IEC TS 60076-20:2017/COR1:2018 belong to?

IEC TS 60076-20:2017/COR1:2018 is classified under the following ICS (International Classification for Standards) categories: 29.180 - Transformers. Reactors. The ICS classification helps identify the subject area and facilitates finding related standards.

What standards are related to IEC TS 60076-20:2017/COR1:2018?

IEC TS 60076-20:2017/COR1:2018 has the following relationships with other standards: It is inter standard links to IEC TS 60076-20:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

How can I access IEC TS 60076-20:2017/COR1:2018?

IEC TS 60076-20:2017/COR1:2018 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)

IEC TS 60076-20:2017/COR1:2018...

 IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
IEC TS 60076-20
Edition 1.0 2017-01
POWER TRANSFORMERS – PART 20: ENERGY EFFICIENCY –

CO RRI G E ND
...

Questions, Comments and Discussion

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IEC

IEC 60076-22-7:2020/COR1:2023(Corrigendum)

Corrigendum 1 - Power transformers - Part 22-7: Power transformer and reactor fittings - Accessories and fittings

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2 pages
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IEC 60076-19-1:2023(Main)

Power transformers - Part 19 - 1: Rules for the determination of uncertainties in the measurement of the losses of power transformers

IEC 60076-19-1:2023 defines the procedures that are applied to evaluate the uncertainty affecting the measurements of no-load and load losses during the routine tests on power transformers.
This document centres on measuring systems utilizing digital instruments, although the procedures can be adapted to evaluation of systems with analogue instruments where further uncertainty sources have to be taken into account.
This document specifies how to determine measurement uncertainty and how to apply corrections for known errors in the measurement chain. Information vis-à-vis judgement and traceability are given in IEC 60076-8:1997, 10.1 and 10.2.

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IEC 60076-25:2023(Main)

Power transformers - Part 25: Neutral grounding resistors

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);
designed, manufactured and verified on a one-off basis or fully standardized and manufactured in quantity.
Both terms "neutral grounding resistor" (NGR) and "neutral earthing resistor" (NER) can be used. However, for the purposes of this document and in order to avoid any confusion with "neutral earthing reactor" (NER), the term "neutral grounding resistor" (NGR) is used.
This document specifies:
the characteristics of the NGR;
the service conditions requirements for NGRs;
the tests and test methods for confirming that these conditions have been met;
the requirements relating to marking for NGRs.
Annex A provides guidance on how to consider the effect of resistance variation with temperature.

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IEC 60076-22-8:2021(Main)

Power transformers - Part 22-8: Power transformer and reactor fittings - Devices suitable for use in communication networks

IEC 60076-22:2021 applies to a selection of accessories and fittings mounted on liquid immersed power transformers according to IEC 60076-1 and reactors according to IEC 60076-6 with or without conservator for indoor or outdoor installation.
It outlines the operation requirements specific to each device as well as the data made available to the communication network and the type and routine test to be performed.

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IEC 60076-22-6:2021(Main)

Power transformers - Part 22-6: Power transformer and reactor fittings - Electric fans for transformers

IEC 60076-22-6:2021 covers the electric fans used in the cooling circuits of power transformers and reactors. It applies to electric fans mounted on liquid immersed power transformers according to IEC 60076-1 and reactors according to IEC 60076-6 with and without conservator for indoor or outdoor installation. It outlines the service conditions and the mechanical and electrical requirements that are common to all the equipment.
The electric fans concerned by this document are of the axially operating type and are for use on liquid to air coolers and for blowing out radiators.
This document also outlines the operation requirements specific to each equipment as well as the preferred dimensions relevant for interchangeability and uniform fan assembly and the type and routine tests to be performed.

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English and French language
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IEC 60076-22-5:2021(Main)

Power transformers - Part 22-5: Power transformer and reactor fittings - Electric pumps for transformers

IEC 60076-22-5:2021 covers electric pumps used in the cooling circuits of power transformers and reactors. It applies to electric pumps mounted on liquid immersed power transformers according to IEC 60076-1 and reactors according to IEC 60076-6 with and without conservator for indoor or outdoor installation.
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.
The pumps covered in this document are rotodynamic pumps driven by a squirrel cage induction motor that is immersed in the insulating liquid.
Pump sets conforming to this document can be of in-line or end suction design.

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Power transformers - Part 10-1: Determination of sound levels - Application guide

IEC 60076-10-1:2016 provides supporting information to help both manufacturers and purchasers to apply the measurement techniques described in IEC 60076-10. Besides the introduction of some basic acoustics, the sources and characteristics of transformer and reactor sound are described. Practical guidance on making measurements is given, and factors influencing the accuracy of the methods are discussed. This application guide also indicates why values measured in the factory may differ from those measured in service. This application guide is applicable to transformers and reactors together with their associated cooling auxiliaries. This edition includes the following significant technical changes with respect to the previous edition:
a) extended information on sound fields provided;
b) effect of current harmonics in windings enfolded;
c) updated information on measuring methods sound pressure and sound intensity given;
d) supporting information on measuring procedures walk-around and point-by-point given;
e) clarification of A-weighting provided;
f) new information on frequency bands given;
g) background information on measurement distance provided;
h) new annex on sound-built up due to harmonic currents in windings introduced.
This publication is to be read in conjunction with IEC 60076-10:2016.

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IEC 60076-10-1:2016/AMD1:2020(Amendment)

Amendment 1 - Power transformers - Part 10-1: Determination of sound levels - Application guide

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IEC 60076-11:2018/ISH1:2020(Main)

Interpretation sheet 1 - Power transformers - Part 11: Dry-type transformers

Standard
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IEC 60076-24:2020(Main)

Power transformers - Part 24: Specification of voltage regulating distribution transformers (VRDT)

IEC 60076-24:2020 applies to medium power transformers from 25 kVA up to 3 150 kVA with highest voltage for equipment up to 36 kV, or in low voltage (LV) networks with highest voltage for equipment of up to 1,1 kV equipped with voltage regulating devices. Voltage regulating distribution transformers are transformers equipped with components to control primary or secondary voltage for on-load voltage regulation purposes. The main objective of the installation of a VRDT is to regulate the LV network voltage level (i.e. 400 V), to avoid violation of the limits defined by relevant standards or regulations. The VRDT must operate properly as a step down and step up transformer. Transformers covered by this document comply with the relevant requirements set out in IEC 60076 (all parts) and, unless otherwise stated in this document, they also comply with European Standards EN 50160 and EN 50588-1.

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English and French language
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29.180
TC 14

Corrigendum 1 - Power transformers - Part 20: Energy efficiency

General Information

Relations

IEC TS 60076-20:2017/COR1:2018 - Corrigendum 1 - Power transformers - Part 20: Energy efficiency Released:1/12/2018

Frequently Asked Questions

Standards Content (Sample)

Questions, Comments and Discussion

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