IEC 62772:2023 PDF

Composite hollow core station post insulators with a.c. voltage greater than 1 000 V and d.c. voltage greater than 1 500 V - Definitions, test methods and acceptance criteria

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IEC 62772:2023

Composite hollow core station post insulators with a.c. voltage greater than 1 000 V and d.c. voltage greater than 1 500 V - Definitions, test methods and acceptance criteria

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 95
Дата публикации:: 15 ноября 2023 г.
Издание:: IEC IS 62772 edition 2 version 1
ICS:: 29.080.10

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Срок поставки:16 раб. дн. (перевод)

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IEC 62772:2023 applies to composite hollow core station post insulators consisting of a load-bearing insulating tube (core) made of resin impregnated fibres, insulating filler material (solid, liquid, gaseous – pressurized or unpressurized), a housing (outside the insulating tube) made of polymeric material (for example silicone or ethylene-propylene) and fixing devices at the ends of the insulating tube. Composite hollow core station post insulators as defined in this standard are intended for general use in substations in both, outdoor and indoor environments, operating with a rated AC voltage greater than 1 000 V and a frequency not greater than 100 Hz or for use in direct current systems with a rated voltage greater than 1 500 V DC. The object of this document is: - to define the terms used; - to specify test methods; - to specify acceptance criteria.

Технические детали

Технический комитет: TC 36 - Insulators
SKU: IEC 62772:2023

Abstract

Overview

IEC 62772:2023 defines composite hollow core station post insulators for substations operating at AC voltages > 1 000 V (≤ 100 Hz) and DC voltages > 1 500 V. This second edition (Edition 2.0, 2023‑11) is a technical revision that updates terms and definitions, harmonizes required tests, revises selected test procedures and expands annexes (qualification of fillers; load definitions). The standard covers definitions, required test methods, and acceptance criteria for insulators comprising a resin‑impregnated fiber core, insulating filler (solid/liquid/gaseous), polymeric housing (e.g., silicone, EPDM) and end fittings.

Key topics and requirements

IEC 62772:2023 structures its conformity checks and technical content around clearly defined test classes and component evaluations:

Classification of tests: design tests, type tests, sample tests and routine tests.
Design and interface tests: verification of interfaces and end‑fitting connections, reference disruptive‑discharge voltage, thermal‑mechanical and water‑immersion pre‑stress.
Mechanical tests: maximum design cantilever load (MDCL), torsion (MDToL), specified tension/compression and buckling tests, bending and assembled core load tests.
Electrical tests: dry lightning impulse, switching impulse (dry/wet), dry and wet power‑frequency withstand voltages, internal pressure tests.
Material and ageing tests: housing hardness, accelerated weathering, tracking and erosion (including 1 000 h salt‑fog AC test), flammability, hydrophobicity transfer.
Core and filler integrity: porosity/dye‑penetration, water diffusion tests (core alone and core with housing), qualification procedures for fillers, routine seal leak‑rate tests.
Documentation and marking: identification, transport, storage and installation information, and test reporting requirements.

Practical applications and who uses this standard

IEC 62772:2023 is intended for anyone involved in the design, manufacture, testing, procurement and operation of station post insulators in substations:

Manufacturers - design validation, type approval and material qualification.
Test laboratories and certification bodies - reference test procedures and acceptance criteria for certification and type testing.
Utilities and asset owners - procurement specifications, acceptance testing, and lifecycle assurance.
Design and installation engineers - guidance on mechanical/electrical load limits, installation, transport and storage conditions.
Regulatory/compliance teams - harmonized requirements for international projects.

Related standards

IEC 62217 - general requirements for polymeric insulator materials and interfaces.
IEC 61462 - composite hollow insulators (pressurized/unpressurized) - definitions and design recommendations.
IEC 62231 - composite station post insulators for substations.
IEC TR 62039 - referenced for hydrophobicity transfer and related methods.

Keywords: IEC 62772:2023, composite hollow core station post insulators, test methods, acceptance criteria, substations, AC >1000 V, DC >1500 V, hydrophobicity, water diffusion, end fittings.

Overview

Key topics and requirements

IEC 62772:2023 structures its conformity checks and technical content around clearly defined test classes and component evaluations:

Classification of tests: design tests, type tests, sample tests and routine tests.
Design and interface tests: verification of interfaces and end‑fitting connections, reference disruptive‑discharge voltage, thermal‑mechanical and water‑immersion pre‑stress.
Mechanical tests: maximum design cantilever load (MDCL), torsion (MDToL), specified tension/compression and buckling tests, bending and assembled core load tests.
Electrical tests: dry lightning impulse, switching impulse (dry/wet), dry and wet power‑frequency withstand voltages, internal pressure tests.
Material and ageing tests: housing hardness, accelerated weathering, tracking and erosion (including 1 000 h salt‑fog AC test), flammability, hydrophobicity transfer.
Core and filler integrity: porosity/dye‑penetration, water diffusion tests (core alone and core with housing), qualification procedures for fillers, routine seal leak‑rate tests.
Documentation and marking: identification, transport, storage and installation information, and test reporting requirements.

Practical applications and who uses this standard

IEC 62772:2023 is intended for anyone involved in the design, manufacture, testing, procurement and operation of station post insulators in substations:

Manufacturers - design validation, type approval and material qualification.
Test laboratories and certification bodies - reference test procedures and acceptance criteria for certification and type testing.
Utilities and asset owners - procurement specifications, acceptance testing, and lifecycle assurance.
Design and installation engineers - guidance on mechanical/electrical load limits, installation, transport and storage conditions.
Regulatory/compliance teams - harmonized requirements for international projects.

Related standards

IEC 62217 - general requirements for polymeric insulator materials and interfaces.
IEC 61462 - composite hollow insulators (pressurized/unpressurized) - definitions and design recommendations.
IEC 62231 - composite station post insulators for substations.
IEC TR 62039 - referenced for hydrophobicity transfer and related methods.

Keywords: IEC 62772:2023, composite hollow core station post insulators, test methods, acceptance criteria, substations, AC >1000 V, DC >1500 V, hydrophobicity, water diffusion, end fittings.

IEC 62772:2023 PDF

Технические детали

Abstract

Overview

Key topics and requirements

Practical applications and who uses this standard

Related standards

Похожие стандарты

Abstract

Overview

Key topics and requirements

Practical applications and who uses this standard

Related standards

Похожие стандарты

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