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GB/T 1001.1-2021Insulators for overhead lines with a nominal voltage above 1 000V - Part 1: Ceramic or glass insulator units for a. c. systems - Definitions, test methods and acceptance criteria (English PDF)

标称电压高于1000V的架空线路绝缘子第1部分：交流系统用瓷或玻璃绝缘子元件定义、试验方法和判定准则

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 31, 2021

Implementation date

July 1, 2022

Scope

GB/T 1001.1-2021 is the English-translated version of 标称电压高于1000V的架空线路绝缘子第1部分：交流系统用瓷或玻璃绝缘子元件定义、试验方法和判定准则.

GB/T 1001.1-2021 is the Chinese standard "Insulators for overhead lines with a nominal voltage above 1 000V - Part 1: Ceramic or glass insulator units for a. c. systems - Definitions, test methods and acceptance criteria".

Its scope clause reads: This document defines the terms and characteristics of porcelain or glass insulator elements for overhead lines (hereinafter referred to as insulators), specifies the inspection characteristics Conditions for specified values, test methods and judgment criteria: This document applies to ceramic and glass insulation for AC overhead power and traction lines with a nominal voltage higher than 1000V and a frequency not exceeding 100Hz: Insulators, and definitions, test methods and criteria for insulators for DC overhead electric traction lines: This document also applies to the definition and testing of insulator string elements, rigid insulators for overhead lines and insulators of similar construction used in substations Methods and Judgment Criteria: This document does not apply to insulators constituting electrical components, or components in electrical structures, as well as those listed in GB/T 8287 (all parts) Definitions, test methods and criteria for determination of post insulators are included: Test methods (eg, wet operating impulse voltage) and acceptance criteria for insulator strings and insulator groups are in GB/T 1001:2-2010 exposition: Note 1: This document does not include artificial contamination test, the test method is discussed in GB/T 4585-2004: This document does not include requirements for the selection of insulators for specific operating conditions: Note 2: See GB/T 26218:2-2010 for guidelines on selecting insulators under dirty conditions: The characteristic values of insulators are specified in the corresponding product standards:.

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Document preview — GB/T 1001.1-2021

National Standard of the People's Republic of China

Classification: K 48

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Classification, types, characteristics and insulating materials of insulators
5 Identification of insulators
6 Test classification
7 Procedures for type and sampling tests
8 General requirements for high voltage tests
9 Standard atmospheric conditions and correction factors for electrical tests
10 Artificial Rain Parameters for Wet Test
11 Installation arrangement for electrical tests
12 Lightning impulse voltage test (type test)
13 Wet power frequency voltage test (type test)
14 Breakdown withstand test (type test and sampling test, only for type B insulators)
15 Voltage-by-voltage test (for type B porcelain insulators only)
16 Radio interference test (type test and sampling test)
17 Visible corona voltage test (type test)
18 Dimensional inspection (type test and sampling test)
19 Residual mechanical strength test (type test and sampling test)
20 Electromechanical failure load test (type test and sampling test)
21 Mechanical failure load test (type test and sampling test)
22 Thermomechanical performance test (type test)
23 Inspection of Axial, Radial and Angular Offset (Sampling Test)
24 Inspection of locking device (sampling test)
25 Temperature cycle test (pre-test of residual strength test in sampling test and type test)
26 Thermal shock test (sampling test)
27 Porosity test (sampling test)

1 Scope

This document defines the terms and characteristics of porcelain or glass insulator elements for overhead lines (hereinafter referred to as insulators), specifies the inspection characteristics

Conditions for specified values, test methods and judgment criteria:

This document applies to ceramic and glass insulation for AC overhead power and traction lines with a nominal voltage higher than 1000V and a frequency not exceeding 100Hz:

Insulators, and definitions, test methods and criteria for insulators for DC overhead electric traction lines:

This document also applies to the definition and testing of insulator string elements, rigid insulators for overhead lines and insulators of similar construction used in substations

Methods and Judgment Criteria:

This document does not apply to insulators constituting electrical components, or components in electrical structures, as well as those listed in GB/T 8287 (all parts)

Definitions, test methods and criteria for determination of post insulators are included:

Test methods (eg, wet operating impulse voltage) and acceptance criteria for insulator strings and insulator groups are in GB/T 1001:2-2010 exposition:

Note 1: This document does not include artificial contamination test, the test method is discussed in GB/T 4585-2004:

This document does not include requirements for the selection of insulators for specific operating conditions:

Note 2: See GB/T 26218:2-2010 for guidelines on selecting insulators under dirty conditions:

The characteristic values of insulators are specified in the corresponding product standards:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document:

GB/T 2900:8-2009 Electrical terminology insulators (IEC 60050-471:2007, IDT)

GB/T 4056-2019 Ball and socket connection dimensions of insulator string elements (IEC 60120:1984, MOD)

GB/T 8411:1 Ceramic and glass insulating materials Part 1: Definition and classification (GB/T 8411:1-2008, IEC 60672-1:

1995, MOD)

GB/T 8411:3 Ceramic and Glass Insulating Materials Part 3: Material Properties (GB/T 8411:3-2009, IEC 60672-3:

1997, MOD)

GB/T 16927:1 High Voltage Test Technology Part 1: General Definitions and Test Requirements (GB/T 16927:1-2011,

IEC 60060-1:2010, MOD)

GB/T 20642-2006 High Voltage Line Insulators Impact Breakdown Test in Air (IEC 61211:2004, MOD)

GB/T 21206-2007 Characteristics of line post insulators (IEC 60720:1981, MOD)

GB/T 24623 High Voltage Insulator Radio Interference Test (GB/T 24623-2009, IEC 60437:1997, MOD)

GB/T 25317-2010 Groove connection dimensions of insulator string elements (IEC 60471:1977, IDT)

GB/T 25318-2019 Dimensions and tests of locking pins for ball and socket connections of insulator string elements (IEC 60372:1984, MOD)

JB/T 8177 General technical requirements for hot-dip galvanized coating of insulator metal accessories

GB/T 2694 | DL/T 1000.1 | DL/T 1000.3 | GB/T 4585 | GB/T 1000 | GB/T 1001.2 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 96 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 2900 · IEC 60050 · IEC 60120 · GB/T 8411 · IEC 60672 · GB/T 16927 · IEC 60060 · IEC 61211 · IEC 60720 · IEC 60437 · IEC 60471 · IEC 60372

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