About us
About us
Focus on the existing and sustainable development problems of the industry, and provide solutions through technological innovation.
News
News
Learn about the latest company, products, business news and technological developments of SHEMAR POWER. Every day, SHEMAR is bringing safer and more economical electric energy closer to you.
Patent Standard
Be valuable only by creating value. Creating value means be valuable
Patent work：
As of March 31, 2026, the company has applied for：
-
449Domestic invention patents
-
520Domestic utility model patents
-
69Domestic design patents
-
55PCT patents
-
10Paris Convention patents
-
242Overseas invention patents
-
28Overseas invention patents
| Product | Number of domestic patents | Domestic invention patent | Number of international patents | International Invention Patent |
|---|---|---|---|---|
| Rubber seal | 10 | 4 | 0 | 0 |
| Composite hollow insulator | 96 | 51 | 1 | 1 |
| Composite post insulator | 47 | 29 | 13 | 13 |
| Composite line insulator | 32 | 7 | 0 | 0 |
| Anti-flashover solution | 16 | 8 | 10 | 10 |
| Transformer bushing | 42 | 16 | 4 | 4 |
| Distribution composite crossarm | 105 | 11 | 50 | 23 |
| Dry -type transformer | 48 | 8 | 7 | 7 |
| Surge arrester | 1 | 0 | 0 | 0 |
| GIL | 5 | 3 | 0 | 0 |
| Insulating pull rod | 8 | 5 | 0 | 0 |
| Substation structure | 44 | 12 | 6 | 6 |
| Gas-insulated bushing | 9 | 4 | 0 | 0 |
| Wall bushing | 7 | 1 | 1 | 1 |
| Sheath | 2 | 1 | 0 | 0 |
| Composite pipeline | 4 | 0 | 0 | 0 |
Standard work
The company has actively participated in standardization activities both domestically and internationally, and has become a member of multiple standardization committees and associations, including the International Conference on Large High Voltage Electric System (CIGRE), the Standards Association of the Institute of Electrical and Electronics Engineers (IEEE) , the IEEE Power and Energy Society (IEEE PES), the Chinese Society for Electrical Engineering (CSEE), the China Electrical Equipment Industry Association (CEEIA), the Chinese Society for Composite Materials (CSCM), the National Technical Committee for Insulators Standardization, the Technical Committee for Insulators Standardization in the Power Industry, and the Technical Co construction Unit of the Insulators Expert Working Committee of the Electric Power Technology Collaboration (EPTC). In 2008, the product standard "Composite Hollow Insulators for 126kV~1100kV Switchgear" won the "China Standard Innovation and Contribution Award".
| Serial number | Standard number | Standard name (Chinese) | Standard type |
|---|---|---|---|
| 1 | IEC 61109-2025 | Insulators for overhead lines – Composite suspension and tension insulators with AC voltage greater than 1 000 V and DC voltage greater than 1 500 V – Definitions, test methods and acceptance criteria | IEC International Standard |
| 2 | IEC 61462-2023 | Composite hollow insulators - Pressurized and unpressurized insulators for use in electrical equipment with AC rated voltage greater than 1 000 V AC and D.C. voltage greater than 1500V - Definitions, test methods, acceptance criteria and design recommendations | IEC International Standard |
| 3 | IEC 62217-2025 | Polymeric HV insulators for indoor and outdoor use - General definitions, test methods and acceptance criteria | IEC International Standard |
| 4 | 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 | IEC International Standard |
| 5 | IEC TS 60815-1-2025 | Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 1: Definitions, information and general principles | IEC International Standard |
| 6 | IEC TS 60815-3-2025 | Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 3: Polymer insulators for AC systems | IEC International Standard |
| 7 | IEEE 1898-2016 | IEEE Standard for High-Voltage Direct-Current (HVDC) Composite Post Insulators | IEEE International Standard |
| 8 | GB/T 4109-2022 | Insulated bushings for alternating voltages above 1 000 V | National Standard |
| 9 | GB/T 21429-2008 | Composite insulators - Hollow insulators for use in outdoor and indoor electrical equipment - Definitions,test methods,acceptance criteria and design recommendations | National Standard |
| 10 | GB/T 22079-2019 | HV polymeric insulators for indoor and outdoor use - General definitions,test methods and acceptance criteria | National Standard |
| 11 | GB/T 24840-2018 | Technical specification for bushings of 1000kV AC system | National Standard |
| 12 | GB/T 25096-2010 | Composite station post insulators for substations with AC voltages greater than 1000V - Definitions,test methods and acceptance criteria | National Standard |
| 13 | GB/T 26218.3-2011 | Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 3:Composite insulators for a.c.systems | National Standard |
| 14 | GB/T 26218.4-2019 | Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 4:Insulators for d.c.systems | National Standard |
| 15 | GB/T 34939.1-2017 | D.C. ±800kV composite post insulator-Part 1:Composite post insulator with resin impregnated glass fibers solid core | National Standard |
| 16 | GB/T 44179-2024 | Composite hollow core station post insulators with a.c. voltage greater than 1 000V and d.c. voltage greater than 1 500V—Definitions,test methods and acceptance criteria | National Standard |
| 17 | DL/T 810-2012 | Technical specification for long rod composite insulators with a nominal voltage of ±500kV DC and above | Industry Standard |
| 18 | DL/T 1048-2021 | Composite station post insulators - definitions, test methods and acceptance criteria | Industry Standard |
| 19 | DL/T 1277-2013 | Technical specification of 1100kV a.c.composite hollow insulators | Industry Standard |
| 20 | DL/T 1472.1-2015 | Post insulators for HVDC converter station Part 1:Technical specification | Industry Standard |
| 21 | DL/T 1472.2-2015 | Post insulators for HVDC converter station Part 2:Dimensions and characteristics | Industry Standard |
| 22 | DL/T 1539-2016 | Selection guide to the high-voltage bushings for power transformers（reactors） | Industry Standard |
| 23 | DL/T 1579-2024 | Technical specification for end fittings of overhead lines composite insulator | Industry Standard |
| 24 | DL/T 1580-2021 | Technical specification for core of composite insulators ina.c or d.c system | Industry Standard |
| 25 | DL/T 1902-2018 | Installation, operation and maintenance specification of a.c. and d.c.composite hollow insulators with high voltage | Industry Standard |
| 26 | DL/T 2173-2020 | Technical specification of ±1100kV composite post insulator | Industry Standard |
| 27 | DL/T 2388-2021 | Composite post insulator for a.c. overhead transmission lines with a norminal voltage greater than 1000V - definitions,test methods and acceptance criteria | Industry Standard |
| 28 | DL/T 2439.2-2024 | Application guide for post insulators used on station with a norminal voltage above 1000V - Part 2: Compositestationpostinsulator | Industry Standard |
| 29 | DL/T 2452-2021 | Construction, operation and maintenance specification for post insulators used in a.c. and d.c. systems | Industry Standard |
| 30 | DL/T 2454-2021 | Composite post insulator for a.c. overhead transmission lines with a norminal voltage greater than 1000V - definitions,test methods and acceptance criteria | Industry Standard |
| 31 | JB/T 8448.1-2018 | Technical specifications of sealing articles for transformer and similar products - Part 1：Rubber sealing articles | Industry Standard |
| 32 | NB/T 10687-2021 | Specification for selection and inspection of HVDC equipment in high earthquake intensity conditions on plateau | Industry Standard |
| 33 | NB/T 10688-2021 | Technical specifications of sealing articles for high voltage DC equipment for plateau | Industry Standard |
| 34 | NB/T 10824-2021 | Guide for fireproof endurance rating assessment of insulating materials for converter transformer | Industry Standard |
| 35 | NB/T 42012-2013 | Dimensions and characteristics of composite insulators with rated voltage 1100kV used for a.c.substations and electrical equipments | Industry Standard |
| 36 | T/CEC 138-2017 | Technical requirements of damping rubber materials for oil immersed transformers | Group Standard |
| 37 | T/CEC 183-2018 | Technical specification of composite hollow insulators for a.c. and d.c.high voltage system | Group Standard |
| 38 | T/CEC 270-2019 | Technical specification for 1000kV AC composite hollow core line post insulators filled with insulating gas | Group Standard |
| 39 | T/CEC 523-2021 | Ethylene propylene diene monomer rubber stealing rings for SF6 high-voltage electrical equipment | Group Standard |
| 40 | T/CEEIA 457-2020 | Technical specification for alumninium alloy castings to be used as composite insulator metal fittings | Group Standard |
| 41 | T/CEEIA 458-2020 | Technical specification for insulated tube to be used on composite hollow insulators | Group Standard |
| 42 | T/CEEIA 490-2020 | The technical specifications of rubber products used in cooling system of HVDC converter valve towers | Group Standard |
| 43 | T/CEEIA 808-2024 | Technical specifications of rubber sealing articles for ester insulating oil transformer and similar products | Group Standard |
| 44 | T/CES 081-2021 | Test method for insulators Part 1: General test methods | Group Standard |
| 45 | T/CES 082-2021 | Test method for insulators Part 2: Electrical test methods | Group Standard |
| 46 | T/CES 083-2021 | Test method for insulators Part 3: Mechanical test methods | Group Standard |
| 47 | T/CSTM 00164-2020 | Life prediction of rubber sealing rings in liquid medium | Group Standard |
| 48 | T/ZZB 0232-2017 | Methyl vinyl silicon rubber | Group Standard |
| 49 | Q/GDW 11123.1-2013 | Provisional Technical Code for Composite Insulated Equipment of 750kV Substations Part 1：General Part | Enterprise Standard of State Grid Corporation of China |
| 50 | Q/GDW 11123.2-2013 | Provisional Technical Code for Composite Insulated of 750kV Substation Equipments Part 2：Equipment Code | Enterprise Standard of State Grid Corporation of China |
| 51 | Q/GDW 11123.3-2013 | Provisional Technical Code for Composite Insulated of 750kV Substation Equipments Part 3：Composite Insulator | Enterprise Standard of State Grid Corporation of China |
| 52 | Q/GDW 11714.2-2017 | Composite Cross Arm of 1000kV AC Overhead Transmission Line Part 2: Technical Condition of Line Post Composite Insulator | Enterprise Standard of State Grid Corporation of China |
| 53 | Q/GDW 12069-2020 | Technology specification of composite cross arm of 10kV distribution line | Enterprise Standard of State Grid Corporation of China |
Patent work：
As of March 31, 2026, the company has applied for：
-
449Domestic invention patents
-
520Domestic utility model patents
-
69Domestic design patents
-
55PCT patents
-
10Paris Convention patents
-
242Overseas invention patents
-
28Overseas invention patents
| Product:Rubber seal |
|---|
| Number of domestic patents:10 |
| Domestic invention patent:4 |
| Number of international patents:0 |
| International Invention Patent:0 |
| Product:Composite hollow insulator |
|---|
| Number of domestic patents:96 |
| Domestic invention patent:51 |
| Number of international patents:1 |
| International Invention Patent:1 |
| Product:Composite post insulator |
|---|
| Number of domestic patents:47 |
| Domestic invention patent:29 |
| Number of international patents:13 |
| International Invention Patent:13 |
| Product:Composite line insulator |
|---|
| Number of domestic patents:32 |
| Domestic invention patent:7 |
| Number of international patents:0 |
| International Invention Patent:0 |
| Product:Anti-flashover solution |
|---|
| Number of domestic patents:16 |
| Domestic invention patent:8 |
| Number of international patents:10 |
| International Invention Patent:10 |
| Product:Transformer bushing |
|---|
| Number of domestic patents:42 |
| Domestic invention patent:16 |
| Number of international patents:4 |
| International Invention Patent:4 |
| Product:Distribution composite crossarm |
|---|
| Number of domestic patents:105 |
| Domestic invention patent:11 |
| Number of international patents:50 |
| International Invention Patent:23 |
| Product:Dry -type transformer |
|---|
| Number of domestic patents:48 |
| Domestic invention patent:8 |
| Number of international patents:7 |
| International Invention Patent:7 |
| Product:Surge arrester |
|---|
| Number of domestic patents:1 |
| Domestic invention patent:0 |
| Number of international patents:0 |
| International Invention Patent:0 |
| Product:GIL |
|---|
| Number of domestic patents:5 |
| Domestic invention patent:3 |
| Number of international patents:0 |
| International Invention Patent:0 |
| Product:Insulating pull rod |
|---|
| Number of domestic patents:8 |
| Domestic invention patent:5 |
| Number of international patents:0 |
| International Invention Patent:0 |
| Product:Substation structure |
|---|
| Number of domestic patents:44 |
| Domestic invention patent:12 |
| Number of international patents:6 |
| International Invention Patent:6 |
| Product:Gas-insulated bushing |
|---|
| Number of domestic patents:9 |
| Domestic invention patent:4 |
| Number of international patents:0 |
| International Invention Patent:0 |
| Product:Wall bushing |
|---|
| Number of domestic patents:7 |
| Domestic invention patent:1 |
| Number of international patents:1 |
| International Invention Patent:1 |
| Product:Sheath |
|---|
| Number of domestic patents:2 |
| Domestic invention patent:1 |
| Number of international patents:0 |
| International Invention Patent:0 |
| Product:Composite pipeline |
|---|
| Number of domestic patents:4 |
| Domestic invention patent:0 |
| Number of international patents:0 |
| International Invention Patent:0 |
Standard work
The company has actively participated in standardization activities both domestically and internationally, and has become a member of multiple standardization committees and associations, including the International Conference on Large High Voltage Electric System (CIGRE), the Standards Association of the Institute of Electrical and Electronics Engineers (IEEE) , the IEEE Power and Energy Society (IEEE PES), the Chinese Society for Electrical Engineering (CSEE), the China Electrical Equipment Industry Association (CEEIA), the Chinese Society for Composite Materials (CSCM), the National Technical Committee for Insulators Standardization, the Technical Committee for Insulators Standardization in the Power Industry, and the Technical Co construction Unit of the Insulators Expert Working Committee of the Electric Power Technology Collaboration (EPTC). In 2008, the product standard "Composite Hollow Insulators for 126kV~1100kV Switchgear" won the "China Standard Innovation and Contribution Award".
| Serial number ：1 |
|---|
| Standard number : IEC 61109-2025 |
| Standard name (Chinese) : Insulators for overhead lines – Composite suspension and tension insulators with AC voltage greater than 1 000 V and DC voltage greater than 1 500 V – Definitions, test methods and acceptance criteria |
| Standard type : IEC International Standard |
| Serial number ：2 |
|---|
| Standard number : IEC 61462-2023 |
| Standard name (Chinese) : Composite hollow insulators - Pressurized and unpressurized insulators for use in electrical equipment with AC rated voltage greater than 1 000 V AC and D.C. voltage greater than 1500V - Definitions, test methods, acceptance criteria and design recommendations |
| Standard type : IEC International Standard |
| Serial number ：3 |
|---|
| Standard number : IEC 62217-2025 |
| Standard name (Chinese) : Polymeric HV insulators for indoor and outdoor use - General definitions, test methods and acceptance criteria |
| Standard type : IEC International Standard |
| Serial number ：4 |
|---|
| Standard number : IEC 62772-2023 |
| Standard name (Chinese) : 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 |
| Standard type : IEC International Standard |
| Serial number ：5 |
|---|
| Standard number : IEC TS 60815-1-2025 |
| Standard name (Chinese) : Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 1: Definitions, information and general principles |
| Standard type : IEC International Standard |
| Serial number ：6 |
|---|
| Standard number : IEC TS 60815-3-2025 |
| Standard name (Chinese) : Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 3: Polymer insulators for AC systems |
| Standard type : IEC International Standard |
| Serial number ：7 |
|---|
| Standard number : IEEE 1898-2016 |
| Standard name (Chinese) : IEEE Standard for High-Voltage Direct-Current (HVDC) Composite Post Insulators |
| Standard type : IEEE International Standard |
| Serial number ：8 |
|---|
| Standard number : GB/T 4109-2022 |
| Standard name (Chinese) : Insulated bushings for alternating voltages above 1 000 V |
| Standard type : National Standard |
| Serial number ：9 |
|---|
| Standard number : GB/T 21429-2008 |
| Standard name (Chinese) : Composite insulators - Hollow insulators for use in outdoor and indoor electrical equipment - Definitions,test methods,acceptance criteria and design recommendations |
| Standard type : National Standard |
| Serial number ：10 |
|---|
| Standard number : GB/T 22079-2019 |
| Standard name (Chinese) : HV polymeric insulators for indoor and outdoor use - General definitions,test methods and acceptance criteria |
| Standard type : National Standard |
| Serial number ：11 |
|---|
| Standard number : GB/T 24840-2018 |
| Standard name (Chinese) : Technical specification for bushings of 1000kV AC system |
| Standard type : National Standard |
| Serial number ：12 |
|---|
| Standard number : GB/T 25096-2010 |
| Standard name (Chinese) : Composite station post insulators for substations with AC voltages greater than 1000V - Definitions,test methods and acceptance criteria |
| Standard type : National Standard |
| Serial number ：13 |
|---|
| Standard number : GB/T 26218.3-2011 |
| Standard name (Chinese) : Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 3:Composite insulators for a.c.systems |
| Standard type : National Standard |
| Serial number ：14 |
|---|
| Standard number : GB/T 26218.4-2019 |
| Standard name (Chinese) : Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Part 4:Insulators for d.c.systems |
| Standard type : National Standard |
| Serial number ：15 |
|---|
| Standard number : GB/T 34939.1-2017 |
| Standard name (Chinese) : D.C. ±800kV composite post insulator-Part 1:Composite post insulator with resin impregnated glass fibers solid core |
| Standard type : National Standard |
| Serial number ：16 |
|---|
| Standard number : GB/T 44179-2024 |
| Standard name (Chinese) : Composite hollow core station post insulators with a.c. voltage greater than 1 000V and d.c. voltage greater than 1 500V—Definitions,test methods and acceptance criteria |
| Standard type : National Standard |
| Serial number ：17 |
|---|
| Standard number : DL/T 810-2012 |
| Standard name (Chinese) : Technical specification for long rod composite insulators with a nominal voltage of ±500kV DC and above |
| Standard type : Industry Standard |
| Serial number ：18 |
|---|
| Standard number : DL/T 1048-2021 |
| Standard name (Chinese) : Composite station post insulators - definitions, test methods and acceptance criteria |
| Standard type : Industry Standard |
| Serial number ：19 |
|---|
| Standard number : DL/T 1277-2013 |
| Standard name (Chinese) : Technical specification of 1100kV a.c.composite hollow insulators |
| Standard type : Industry Standard |
| Serial number ：20 |
|---|
| Standard number : DL/T 1472.1-2015 |
| Standard name (Chinese) : Post insulators for HVDC converter station Part 1:Technical specification |
| Standard type : Industry Standard |
| Serial number ：21 |
|---|
| Standard number : DL/T 1472.2-2015 |
| Standard name (Chinese) : Post insulators for HVDC converter station Part 2:Dimensions and characteristics |
| Standard type : Industry Standard |
| Serial number ：22 |
|---|
| Standard number : DL/T 1539-2016 |
| Standard name (Chinese) : Selection guide to the high-voltage bushings for power transformers（reactors） |
| Standard type : Industry Standard |
| Serial number ：23 |
|---|
| Standard number : DL/T 1579-2024 |
| Standard name (Chinese) : Technical specification for end fittings of overhead lines composite insulator |
| Standard type : Industry Standard |
| Serial number ：24 |
|---|
| Standard number : DL/T 1580-2021 |
| Standard name (Chinese) : Technical specification for core of composite insulators ina.c or d.c system |
| Standard type : Industry Standard |
| Serial number ：25 |
|---|
| Standard number : DL/T 1902-2018 |
| Standard name (Chinese) : Installation, operation and maintenance specification of a.c. and d.c.composite hollow insulators with high voltage |
| Standard type : Industry Standard |
| Serial number ：26 |
|---|
| Standard number : DL/T 2173-2020 |
| Standard name (Chinese) : Technical specification of ±1100kV composite post insulator |
| Standard type : Industry Standard |
| Serial number ：27 |
|---|
| Standard number : DL/T 2388-2021 |
| Standard name (Chinese) : Composite post insulator for a.c. overhead transmission lines with a norminal voltage greater than 1000V - definitions,test methods and acceptance criteria |
| Standard type : Industry Standard |
| Serial number ：28 |
|---|
| Standard number : DL/T 2439.2-2024 |
| Standard name (Chinese) : Application guide for post insulators used on station with a norminal voltage above 1000V - Part 2: Compositestationpostinsulator |
| Standard type : Industry Standard |
| Serial number ：29 |
|---|
| Standard number : DL/T 2452-2021 |
| Standard name (Chinese) : Construction, operation and maintenance specification for post insulators used in a.c. and d.c. systems |
| Standard type : Industry Standard |
| Serial number ：30 |
|---|
| Standard number : DL/T 2454-2021 |
| Standard name (Chinese) : Composite post insulator for a.c. overhead transmission lines with a norminal voltage greater than 1000V - definitions,test methods and acceptance criteria |
| Standard type : Industry Standard |
| Serial number ：31 |
|---|
| Standard number : JB/T 8448.1-2018 |
| Standard name (Chinese) : Technical specifications of sealing articles for transformer and similar products - Part 1：Rubber sealing articles |
| Standard type : Industry Standard |
| Serial number ：32 |
|---|
| Standard number : NB/T 10687-2021 |
| Standard name (Chinese) : Specification for selection and inspection of HVDC equipment in high earthquake intensity conditions on plateau |
| Standard type : Industry Standard |
| Serial number ：33 |
|---|
| Standard number : NB/T 10688-2021 |
| Standard name (Chinese) : Technical specifications of sealing articles for high voltage DC equipment for plateau |
| Standard type : Industry Standard |
| Serial number ：34 |
|---|
| Standard number : NB/T 10824-2021 |
| Standard name (Chinese) : Guide for fireproof endurance rating assessment of insulating materials for converter transformer |
| Standard type : Industry Standard |
| Serial number ：35 |
|---|
| Standard number : NB/T 42012-2013 |
| Standard name (Chinese) : Dimensions and characteristics of composite insulators with rated voltage 1100kV used for a.c.substations and electrical equipments |
| Standard type : Industry Standard |
| Serial number ：36 |
|---|
| Standard number : T/CEC 138-2017 |
| Standard name (Chinese) : Technical requirements of damping rubber materials for oil immersed transformers |
| Standard type : Group Standard |
| Serial number ：37 |
|---|
| Standard number : T/CEC 183-2018 |
| Standard name (Chinese) : Technical specification of composite hollow insulators for a.c. and d.c.high voltage system |
| Standard type : Group Standard |
| Serial number ：38 |
|---|
| Standard number : T/CEC 270-2019 |
| Standard name (Chinese) : Technical specification for 1000kV AC composite hollow core line post insulators filled with insulating gas |
| Standard type : Group Standard |
| Serial number ：39 |
|---|
| Standard number : T/CEC 523-2021 |
| Standard name (Chinese) : Ethylene propylene diene monomer rubber stealing rings for SF6 high-voltage electrical equipment |
| Standard type : Group Standard |
| Serial number ：40 |
|---|
| Standard number : T/CEEIA 457-2020 |
| Standard name (Chinese) : Technical specification for alumninium alloy castings to be used as composite insulator metal fittings |
| Standard type : Group Standard |
| Serial number ：41 |
|---|
| Standard number : T/CEEIA 458-2020 |
| Standard name (Chinese) : Technical specification for insulated tube to be used on composite hollow insulators |
| Standard type : Group Standard |
| Serial number ：42 |
|---|
| Standard number : T/CEEIA 490-2020 |
| Standard name (Chinese) : The technical specifications of rubber products used in cooling system of HVDC converter valve towers |
| Standard type : Group Standard |
| Serial number ：43 |
|---|
| Standard number : T/CEEIA 808-2024 |
| Standard name (Chinese) : Technical specifications of rubber sealing articles for ester insulating oil transformer and similar products |
| Standard type : Group Standard |
| Serial number ：44 |
|---|
| Standard number : T/CES 081-2021 |
| Standard name (Chinese) : Test method for insulators Part 1: General test methods |
| Standard type : Group Standard |
| Serial number ：45 |
|---|
| Standard number : T/CES 082-2021 |
| Standard name (Chinese) : Test method for insulators Part 2: Electrical test methods |
| Standard type : Group Standard |
| Serial number ：46 |
|---|
| Standard number : T/CES 083-2021 |
| Standard name (Chinese) : Test method for insulators Part 3: Mechanical test methods |
| Standard type : Group Standard |
| Serial number ：47 |
|---|
| Standard number : T/CSTM 00164-2020 |
| Standard name (Chinese) : Life prediction of rubber sealing rings in liquid medium |
| Standard type : Group Standard |
| Serial number ：48 |
|---|
| Standard number : T/ZZB 0232-2017 |
| Standard name (Chinese) : Methyl vinyl silicon rubber |
| Standard type : Group Standard |
| Serial number ：49 |
|---|
| Standard number : Q/GDW 11123.1-2013 |
| Standard name (Chinese) : Provisional Technical Code for Composite Insulated Equipment of 750kV Substations Part 1：General Part |
| Standard type : Enterprise Standard of State Grid Corporation of China |
| Serial number ：50 |
|---|
| Standard number : Q/GDW 11123.2-2013 |
| Standard name (Chinese) : Provisional Technical Code for Composite Insulated of 750kV Substation Equipments Part 2：Equipment Code |
| Standard type : Enterprise Standard of State Grid Corporation of China |
| Serial number ：51 |
|---|
| Standard number : Q/GDW 11123.3-2013 |
| Standard name (Chinese) : Provisional Technical Code for Composite Insulated of 750kV Substation Equipments Part 3：Composite Insulator |
| Standard type : Enterprise Standard of State Grid Corporation of China |
| Serial number ：52 |
|---|
| Standard number : Q/GDW 11714.2-2017 |
| Standard name (Chinese) : Composite Cross Arm of 1000kV AC Overhead Transmission Line Part 2: Technical Condition of Line Post Composite Insulator |
| Standard type : Enterprise Standard of State Grid Corporation of China |
| Serial number ：53 |
|---|
| Standard number : Q/GDW 12069-2020 |
| Standard name (Chinese) : Technology specification of composite cross arm of 10kV distribution line |
| Standard type : Enterprise Standard of State Grid Corporation of China |
