Standard No.:	GB/T 5273-2016
English Name:	Dimensional standardisation of terminals for high-voltage apparatus
Chinese Name:	高压电器端子尺寸标准化
Chinese Classification:	K43    High voltage switchgear
Professional Classification:	GB    National Standard
ICS Classification:	29.120.30 29.120.30    Plugs, socket -outlets, couplers 29.120.30
Issued by:	AQSQA AND SAC
Issued on:	2016-04-25
Implemented on:	2016-11-1
Status:	valid
Superseding:	GB/T 5273-1985 Terminals for transformers,high-voltage apparatus and bushings
Language:	English
File Format:	PDF
Word Count:	7500 words
Price(USD):	180.0
Delivery:	via email in 1 business day

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