R&D & Innovation

Standard Setting

Standards Participated in Formulation Standard No. Standard Name Application Time

National Standard GB/T 20642-2006 Definitions, Test Methods and Criteria for Impulse Breakdown Tests in Air of High-Voltage Line Insulators 2007/5/1

National Standard GB/T 26218.2-2010 Selection and Dimensioning of High-Voltage Insulators for Use in Polluted Conditions - Part 2: Porcelain and Glass Insulators for AC Systems 2011/7/1

National Standard GB/T 26218.3-2011 Selection and Dimensioning of High-Voltage Insulators for Use in Polluted Conditions - Part 3: Composite Insulators for AC Systems 2022/9/1

National Standard DL/T 1000.1-2018 Guide for the Use of Overhead Line Insulators with Nominal Voltage Above 1000V - Part 1: Porcelain or Glass Insulators for AC Systems 2022/7/1

National Standard GB/T 1001.1-2021 Overhead Line Insulators with Nominal Voltage Above 1000V - Part 1: Porcelain or Glass Insulator Units for AC Systems - Definitions, Test Methods and Acceptance Criteria 2011/7/1

Standards Participated in Formulation Standard No. Standard Name Application Time

Industry Standard DL/T 812-2002 Power Frequency Arc Test Method for Insulator Strings of Overhead Lines with Nominal Voltage Above 1000V 2022/6/22

Industry Standard DL/T 557-2021 Definitions, Test Methods and Criteria for Impulse Breakdown Tests in Air of High-Voltage Line Insulators 2022/6/22

Industry Standard DL/T 626-2005 Inspection Code for Deteriorated Cap-and-Pin Suspension Insulators 2005/6/1

Industry Standard DL/T 812-2002 Power Frequency Arc Test Method for Insulator Strings of Overhead Lines with Nominal Voltage Above 1000V 2022/9/1

Standards Participated in Formulation Standard No. Standard Name Application Time

Association Standard T/ CEC177-2018 Factory-Composite Porcelain or Glass Insulators for AC and DC Systems - Definitions, Test Methods and Acceptance Criteria 2018/7/3

Association Standard TCEEA 457-2020 Technical Specifications for Aluminum Alloy Castings of Hollow Composite Insulators 2020/12/1

Association Standard TCEEA 458-2020 Technical Specifications for Aluminum Alloy Castings of Hollow Composite Insulators 2020/12/1

Association Standard TCES 081-2021 Test Methods for Insulators - Part 1: General Test Methods 2021/9/28

Association Standard TCES 082-2021 Test Methods for Insulators - Part 2: Electrical Test Methods 2021/9/28

Association Standard TCES 083-2021 Test Methods for Insulators - Part 3: Mechanical Test Methods 2021/9/28

National Standard

GB/T 20642-2006 2007/5/1

Definitions, Test Methods and Criteria for Impulse Breakdown Tests in Air of High-Voltage Line Insulators

GB/T 26218.2-2010 2011/7/1

Selection and Dimensioning of High-Voltage Insulators for Use in Polluted Conditions - Part 2: Porcelain and Glass Insulators for AC Systems

GB/T 26218.3-2011 2022/9/1

Selection and Dimensioning of High-Voltage Insulators for Use in Polluted Conditions - Part 3: Composite Insulators for AC Systems

DL/T 1000.1-2018 2022/7/1

Guide for the Use of Overhead Line Insulators with Nominal Voltage Above 1000V - Part 1: Porcelain or Glass Insulators for AC Systems

GB/T 1001.1-2021 2011/7/1

Overhead Line Insulators with Nominal Voltage Above 1000V - Part 1: Porcelain or Glass Insulator Units for AC Systems - Definitions, Test Methods and Acceptance Criteria

GB/T 1001.1-2021 2022/9/1

Overhead Line Insulators with Nominal Voltage Above 1000V - Part 1: Porcelain or Glass Insulator Units for AC Systems - Definitions, Test Methods and Acceptance Criteria

Industry Standard

DL/T 812-2002 2022/6/22