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CLC

CLC/TC 14/WG 21 - Revision of HD 428 and HD 538

Revision of HD 428 and HD 538

General Information

Status
Active
Sector
W05 - POWER TRANSFORMERS
Work Field
Information technology
Parent
CLC/TC 14 - Power transformers

Frequently Asked Questions

CLC/TC 14/WG 21 is a Working Group within CLC. It is named "Revision of HD 428 and HD 538". This committee has published 8 standards.

CLC/TC 14/WG 21 develops CLC standards in the area of W05 - POWER TRANSFORMERS - Information technology. Currently, there are 8 published standards from this working group.

CLC is a standardization organization that develops and publishes standards to support industry, commerce, and regulatory requirements.

A Working Group in CLC is a specialized group responsible for developing standards or technical work within a defined scope. These bodies bring together international experts to create consensus-based standards that support global trade, safety, and interoperability.

Standardization Organization
ICS
Directive
Mandate
50
CLC
EN 50708-2-3:2022(Main)
Power transformers - Additional European requirements - Part 2-3: Medium power transformer - Accessories
SIST EN 50708-2-3:2022

This document describes the list of typical accessories used for liquid and dry type Medium Power Transformers (≤ 3 150 kVA).

  • Standard
    10 pages
    English language
    e-Library read for
    1 day
CLC
EN 50708-3-4:2022(Main)
Power transformers - Additional European requirements - Part 3-4: Large power transformer - Special tests for corrugated tank and radiators
SIST EN 50708-3-4:2022

This document describes a special test for tanks of liquid-immersed transformers which during service are hermetically sealed and fully filled with liquid and volume change of the liquid due to temperature change compensated by elastic deformation of the cooling element for Large Power Transformers having a rated power greater than 3150 kVA.

  • Standard
    9 pages
    English language
    e-Library read for
    1 day
CLC
EN 50708-2-4:2022(Main)
Power transformers - Additional European requirements - Part 2-4: Medium power transformer - Special tests
SIST EN 50708-2-4:2022

This document describes the special tests for Medium Power Transformers ≤ 3150 kVA compliant with the EN 50708 2 series: - for corrugated tank for liquid immersed transformers, - for the method of measurement of losses for one winding in Highest Voltage (HV) and windings in Lowest Voltage (LV) for liquid immersed and dry type transformers.

  • Standard
    9 pages
    English language
    e-Library read for
    1 day
CLC
EN 50708-2-6:2022(Main)
Power transformers - Additional European requirements - Part 2-6: Medium power transformers - Non-conventional magnetic steel technology
SIST EN 50708-2-6:2022

This document defines the energy performance of non-conventional technology Medium Power Transformers in compliance with EN 50708-1-1.

  • Standard
    8 pages
    English language
    e-Library read for
    1 day
CLC
EN 50708-1-2:2021(Main)
Power transformers - Additional European requirements: Part 1-2 Common part - Assessment of energy performance
SIST EN 50708-1-2:2022

This document applies to all power transformers in scope of TC 14.

  • Standard
    9 pages
    English language
    e-Library read for
    1 day
CLC
EN 50708-2-5:2021(Main)
Power transformers - Additional European requirements - Part 2-5: Medium power transformer - Single phase
SIST EN 50708-2-5:2021

The scope of this document is to define the energy performance of liquid immersed single-phase Medium Power Transformers in compliance with EN 50708 1 1:2020.

  • Standard
    8 pages
    English language
    e-Library read for
    1 day
CLC
EN 50708-2-1:2020/AC:2020-12(Corrigendum)
Power transformers - Additional European requirements: Part 2-1 Medium power transformer - General requirements
SIST EN 50708-2-1:2020/AC:2021

TC - Correction of technical errors

  • Corrigendum
    1 page
    English language
    e-Library read for
    1 day
CLC
EN 50708-2-1:2020(Main)
Power transformers - Additional European requirements: Part 2-1 Medium power transformer - General requirements
SIST EN 50708-2-1:2020

The scope of this document is to define the energy performance of Medium Power Transformers in compliance with EN 50708-1-1:2020.

  • Standard
    14 pages
    English language
    e-Library read for
    1 day
50