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GB/T 32580.5-2026Railway applications - Fixed installations - AC high voltage switchgear and instrument transformers - Part 5: 27.5 kV and 2×27.5 kV metal-enclosed switchgear and controlgear (English PDF)

轨道交通　地面装置　高压交流开关设备及互感器　第5部分：27.5kV和2×27.5kV金属封闭开关设备和控制设备

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

January 28, 2026

Implementation date

August 1, 2026

Scope

GB/T 32580.5-2026 is the English-translated version of 轨道交通　地面装置　高压交流开关设备及互感器　第5部分：27.5kV和2×27.5kV金属封闭开关设备和控制设备.

GB/T 32580.5-2026 is the Chinese standard "Railway applications - Fixed installations - AC high voltage switchgear and instrument transformers - Part 5: 27.5 kV and 2×27.5 kV metal-enclosed switchgear and controlgear".

Its scope clause reads: This document specifies the operating conditions for 27.5kV and 2×27.5kV AC metal-enclosed switchgear and control equipment in electrified railways.

Fixed values, design and structure, test methods, inspection rules, transportation and storage, safety, and the product's environmental impact. This document applies to air-insulated indoor metal-clad enclosed switchgear and control equipment, as well as equipment with air-filled compartments and design pressures not exceeding [a certain value].

Indoor metal-enclosed switchgear and control equipment with a pressure exceeding 0.3 MPa (relative pressure). All components in metal-enclosed switchgear and controlgear are designed and tested in accordance with relevant regulations.

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Document preview — GB/T 32580.5-2026

National Standard of the People's Republic of China

ICS: 29.280
Classification: S 81
Replacing: GB/T 28428-2012

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1.Scope
2 Normative References
3.Terms and Definitions
4.Usage conditions 6.
4.1 Normal operating conditions
4.2 Special Usage Conditions
5 Rated value
5.1 Rated voltage (Ur) and maximum operating voltage (Umax)
5.2 Rated insulation level
5.3 Rated Frequency (fr)
5.4 Rated continuous current and temperature rise
5.8 Rated power supply voltage (Ua) of closing/opening devices and auxiliary/control circuits.
5.9 Rated power supply frequency of closing/opening devices and auxiliary circuits.
5.10 Rated inflation pressure (pre)
5.11 Single-phase rated arc fault current to ground (IAe)
5.12 Single-phase rated arc fault duration to ground (tAe)
5.13 Partial Discharge
6.Design and Structure
6.1 General Requirements
6.2 Design and Appearance
6.3 Requirements for gases in switchgear and controlgear
6.4 Grounding
6.5 Auxiliary equipment and control equipment
6.6 Power Operation
6.7 Energy Storage Operation
6.8 Operations that do not rely on human intervention
6.9 Operation of the trip unit
6.10 Nameplate
6.11 Interlocking device
6.12 Location Indicator
6.13 Enclosure protection rating
6.14 Creepage distance
6.15 Gas and Vacuum Sealing
6.16 Flame retardancy
6.17 Electromagnetic Compatibility (EMC)
6.18 Corrosion
6.19 Internal Fault
6.20 Outer shell
6.21 Compartment
6.22 Removable component
6.23 Requirements for minimum air gaps
6.24 Internal tapered sleeve (if applicable)
6.25 Mechanical Operation and Mechanical Characteristics
6.26 Loop resistance
6.27 Anti-condensation lotion
7.Test Methods
7.1 Design and Appearance Inspection
7.2 Insulation Test
7.3 Measurement of loop resistance
7.4 Continuous Current Test
7.5 Short-time withstand current and peak withstand current tests
7.6 Protection Level Verification
7.7 Sealing Test
7.8 Electromagnetic Compatibility Testing (EMC)
7.9 Additional tests for auxiliary and control loops
7.10 Electrical continuity test of grounded metal components
7.11 Verification of closing and breaking capabilities
7.12 Mechanical operation and mechanical characteristic measurement test
7.13 Testing of Electrical Auxiliary Devices
7.14 Pressure withstand test and gas state measurement of the inflatable compartment
7.15 Pressure test of the inflatable compartment
7.16 Internal Arc Test
8.Inspection Rule
8.1 Inspection Classification
8.2 Factory Inspection
8.3 Type Testing
8.4 Inspection Item
9.Transportation and storage
10 Safety
10.1 General Rule
10.2 Program
10.3 Internal electric arc aspect
11.Environmental impact of the product
Appendix B (Normative) Documents Accompanying the Product

1 Scope

This document specifies the operating conditions for 27.5kV and 2×27.5kV AC metal-enclosed switchgear and control equipment in electrified railways.

Fixed values, design and structure, test methods, inspection rules, transportation and storage, safety, and the product's environmental impact.

This document applies to air-insulated indoor metal-clad enclosed switchgear and control equipment, as well as equipment with air-filled compartments and design pressures not exceeding [a certain value].

Indoor metal-enclosed switchgear and control equipment with a pressure exceeding 0.3 MPa (relative pressure).

All components in metal-enclosed switchgear and controlgear are designed and tested in accordance with relevant regulations.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 1985-2023 High-voltage AC disconnect switches and grounding switches

GB/T 2900.1-2008 Basic Terminology for Electrical Engineering

GB/T 2900.20-2016 Electrical Terminology. High Voltage Switchgear and Controlgear

GB/T 3906-2020 3.6kV~40.5kV AC Metal-Enclosed Switchgear and Controlgear

GB/T 4025 Basic and safety rules for human-machine interface signs and markings; coding rules for indicators and operating devices.

GB/T 4208-2017 Degrees of protection provided by enclosures (IP code)

GB/T 4728.1 Graphical symbols for electrical diagrams - Part 1.General requirements

GB 4824-2025 Limits and methods of measurement for radio frequency interference characteristics of industrial, scientific and medical devices

GB/T 5465.2-2023 Graphical symbols for electrical equipment - Part 2.Graphical symbols

GB/T 11021 Electrical insulation heat resistance and representation method

GB/T 11022-2020 Common Technical Requirements for High Voltage AC Switchgear and Controlgear

GB/T 16927.1-2011 High Voltage Testing Techniques – Part 1.General Definitions and Test Requirements

GB/T 16935.1-2023 Insulation Coordination of Equipment in Low-Voltage Power Supply Systems - Part 1.Principles, Requirements and Tests

GB/T 17626.4 Electromagnetic compatibility testing and measurement techniques - Electrical fast transient/burst immunity test

GB/T 17626.11-2023 Electromagnetic compatibility testing and measurement techniques – Part 11.Input current for each phase less than or equal to

Voltage sag, short interruption and voltage variation immunity test of 16A equipment

GB/T 17626.17-2005 Electromagnetic compatibility testing and measurement techniques - DC power supply input port ripple immunity test

GB/T 17626.18 Electromagnetic compatibility testing and measurement techniques - Damped oscillating wave immunity test

GB/T 17626.29-2006 Electromagnetic Compatibility Testing and Measurement Techniques - DC Power Supply Input Port Voltage Sags, Short Interruptions, and

Immunity test for voltage variation

GB/T 17627 High-voltage testing techniques for low-voltage electrical equipment. definitions, test and procedural requirements, and test equipment.

GB/T 25840-2010 specifies the guidelines for permissible temperature rise of electrical equipment components (particularly terminals).

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 40 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

Editions of GB/T 32580.5

Edition	Title	Revision	Status
GB/T 32580.5-2026	Railway applications - Fixed installations - AC high voltage switchgear and instrument transformers - Part 5: 27.5 kV and 2×27.5 kV metal-enclosed switchgear and controlgear	current edition	Current
GB/T 28428-2012	Railway applications - Fixed installations - AC high voltage switchgear and instrument transformers - Part 5: 27.5 kV and 2×27.5 kV metal-enclosed switchgear and controlgear	previous edition	Superseded

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