GB/T 5273-2016 in English

《GB/T 5273-2016高压电器端子尺寸标准化》由TC65（全国高压开关设备标准化技术委员会）归口，主管部门为中国电器工业协会。

1 Overview

1.1 Scope

This standard specifies the types and dimensions as well as technical requirements of terminals for high-voltage apparatus.

This standard is applicable to high-voltage (HV) terminal of high-voltage apparatus in system with indoor and outdoor voltage being 3,000 V or above. However, its application to other equipment is not excluded. No coordination between dimensions and the rated normal current can be given.

This standard is primarily applicable to the following equipment:

——Power transformer (including thereof the terminal of low voltage side);

——Bushing (including wall bushing and bushing used for high-voltage switchgear and transformer);

——High-voltage breaker;

——High-voltage disconnector;

——High voltage load switch;

——High voltage grounding switch;

——By-pass switch;

——High-voltage automatic recloser;

——High-voltage automatic sectionalizer;

——High-voltage fuse;

——High voltage load switch - fuse-combination unit;

——High voltage contactor - fuse-combination unit;

——Metal-enclosed switchgear;

——High-voltage/low-voltage prefabricated substation;

——Gas-insulated metal-enclosed switchgear (GIS);

——Hybrid gas insulated switchgear (H-GIS);

——Conventional air insulated switchgear (C-AIS);

——Metal-enclosed busbar;

——Cable distribution box;

——Current transformer (excluding its secondary terminal);

——Current-limiting reactor, etc.

This standard is also applicable to the following equipment:

——Grounding switch, power capacitor, arrester and high voltage contactor;

——Transformers other than power transformer (e.g., furnace transformer, rectifier transformer, test transformer, etc.), voltage transformer and shunt reactor;

——High-voltage fuse of protective voltage transformer and power capacitor;

——High-voltage power cable, etc.

Foreword i
1 Overview
1.1 Scope
1.2 Normative References
2 Terms and Definitions
3 Types and Dimensions
3.1 Screw Terminal
3.2 Terminals with Cylindrical Shape
3.3 HV Terminals with Rectangular Shape
3.4 Screw Hole Terminal
4 Technical Requirements
4.1 Materials
4.2 Electrical Property
4.3 Mechanical Property
4.4 Surface Treatment
4.5 Temperature Rise
4.6 Delivery
Bibliography