GB/T 32580.1-2026Railway applications - Fixed installations - High voltage AC switchgear and transformers - Part 1: Circuit-breakers (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents".

Drafting.

This document is Part 1 of GB/T 32580 "High-voltage AC switchgear and instrument transformers for ground installations in rail transit".

GB/T 32580 has published the following parts.

---Part 1: Circuit Breakers;

---Part 2: Disconnecting switches, grounding switches, and load switches;

---Part 3: Current Transformers;

---Part 4: Voltage Transformers;

---Part 5.27.5kV and 2×27.5kV metal-enclosed switchgear and controlgear.

This document replaces GB/T 32580.1-2016 "Special Requirements for AC Switchgear for Ground Installations in Rail Transit - Part 1.

The standard for "Single-phase circuit breakers with voltage greater than 1kV" differs from GB/T 32580.1-2016 in that, aside from structural adjustments and editorial changes, the main technical changes are as follows.

The following is a simplified version.

a) The scope has been changed (see Chapter 1, Chapter 1 of the 2016 edition);

b) Changes have been made to the normal and special usage conditions (see Chapter 4, Chapter 4 of the 2016 edition);

c) The ratings have been changed (see Chapter 5, Chapter 5 of the 2016 edition);

d) The nominal voltage, rated insulation level, rated continuous current, rated short-time withstand current, rated peak withstand current, and rated...

Short circuit duration, rated power supply voltage of closing and opening devices and auxiliary circuits, rated short circuit breaking current, and the ratio of rated short circuit breaking current.

Current-related transient recovery voltage (see 5.3, 5.4, 5.6~5.10, 5.13 and 5.14, 2016 edition of 5.3, 5.4, 5.6~ 5.10, 5.13 and 5.14);

e) The ITRV nominal value has been removed (see 5.15 in the 2016 edition);

f) The rated short-circuit making current and number of interruptions, rated operating sequence, and rated out-of-step making and interrupting currents have been changed (see 5.15~).

(5.17, 2016 version 5.16~5.18)

g) Changed the rated line charging breaking current, rated cable charging breaking current, rated single capacitor bank breaking current, and rated back charge breaking current.

The interrupting current of the back capacitor bank and the rated inrush current of a single capacitor bank are combined into the rated capacitive switching current (see 5.18).

(2016 edition, pp. 5.19-5.23)

h) Increased the number of mechanical operations (see 5.19);

i) The matching of the rated values has been removed (see 5.25 in the 2016 edition);

j) The design and structure have been changed (see Chapter 6, Chapter 6 of the 2016 edition);

k) Changed the gas requirements for circuit breakers, the grounding, auxiliary and control equipment and circuits of circuit breakers, power operation, energy storage operation, and disconnection.

Clamp operation, pressure/level indication, nameplate (see 6.2~6.9, 2016 version of 6.2~6.9);

l) Added interlocking devices, position indicators, enclosure protection rating, external insulation reference uniform creepage distance, and gas and vacuum sealing.

Sealing, (fire) flammability, electromagnetic compatibility (EMC), X-ray emission, corrosion, and insulation and/or opening/closing/operational applications.

Pressure/Level (see 6.10~6.20);

m) Modified the inter-electrode synchrony requirements, general operating requirements, and pressure relief devices (see 6.21, 6.22, 6.24, 2016 edition).

(6.10, 6.11, 6.14)

n) The timing parameter has been changed (see 6.25, 5.24 in the 2016 version);

o) Increased requirements for mechanical load, circuit breaker classification, loop resistance measurement, handcart requirements, design checks, and visual inspections (see...) (June 26-30)

p) The test method has been changed (see Chapter 7, Chapter 7 of the 2016 edition);

q) The short-circuit test parameters have been changed (see 7.1.13, 7.10 in the 2016 version);

r) Factory tests have been modified; the lightning and switch impulse voltage tests have been changed to lightning impulse voltage tests. The corresponding insulation tests have also been modified.

The content was revised, and the requirements for test voltage and creepage distance were supplemented (see 7.1.1.3, 7.2, and 7.2 in the 2016 edition);

s) The radio interference voltage test has been removed (see 7.3 in the 2016 edition);

t) The basic short-circuit test method has been changed (see 7.1.15, 7.12 in the 2016 version);

u) The heterocorrelation and breaking tests have been modified (see 7.1.17, 7.14 in the 2016 version);

v) The capacitive current switching test has been modified (see 7.1.18, 7.15 in the 2016 version);

w) Added rules for transportation, storage, installation, operation, and maintenance (see Chapter 11);

x) Added relevant safety regulations (see Chapter 12);

y) Increased the product's environmental impact (see Chapter 13);

z) Additional documentation has been added to accompany the product (see Appendix C).

This document is modified to adopt IEC 62505-1:2016 "Particular requirements for AC switchgear on ground installations for rail transit - Part 1.

Circuit breakers with a nominal voltage greater than 1kV.

This document has undergone significant structural adjustments compared to IEC 62505-1:2016.A comparison of the structural numbering changes between the two documents is provided below.

See Appendix A for the table.

This document differs significantly from IEC 62505-1:2016 in several technical aspects. The relevant clauses are indicated in vertical margins.

Straight lines (|) are marked. A summary of these technical differences and their reasons can be found in Appendix B.

The following editorial changes have been made to this document.

---To align with my country's standards system, the title of this document has been changed to "High-voltage AC switchgear and mutual inductors for ground installations in rail transit".

Part 1: Circuit Breakers;

---References have been added.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the National Railway Administration.

This document is under the jurisdiction of the National Technical Committee on Standardization of Rail Transit Electrical Equipment and Systems (SAC/TC278).

Introduction

GB/T 32580 "High-voltage AC switchgear and instrument transformers for ground installations in rail transit" aims to ensure the traction power supply system of rail transit.

To improve the product quality of major equipment, ensure transportation safety, meet the development needs of the railway industry, promote standardization, and align with international market standards, it is proposed to...

It consists of five parts.

---Part 1: Circuit Breakers. The purpose is to specify the requirements for application and environmental conditions, including ratings, design, manufacture, and type.

The document outlines requirements for testing and factory testing, and specifies rules for transportation, storage, installation, operation, and maintenance, as well as safety and the product's environmental impact.

The document provides guidance on the impacts of various factors, offering suggestions for the design, manufacture, and use of 27.5kV, 2×27.5kV, and 55kV AC circuit breakers.

Standards and basis.

---Part 2: Disconnecting Switches, Grounding Switches, and Load Switches. The purpose is to specify the scope of use and environmental requirements, from...

Requirements are specified for rated values, design and manufacturing, type testing, and factory testing. A selection guide for disconnecting switches is also provided, which should be included with the order.

The documents provided together with the tender and inquiry form, as well as the rules for transportation, storage, installation, operation and maintenance, safety, and the product's environmental impact, are required.

The document provides guidance on the impact of various factors, including the requirements for 27.5kV, 2×27.5kV, and 55kV AC disconnect switches, grounding switches, and load switches.

It provides standards and guidelines for the design, manufacture, and use of related components.

---Part 3: Current Transformers. The purpose is to specify the requirements for application and environmental conditions, including ratings, design, and manufacturing.

Type testing and factory testing requirements are specified, along with the documents provided with the purchase order, tender, and inquiry form, as well as transportation details.

It provides guidance on transmission, storage, installation, operation and maintenance rules, safety, and the environmental impact of products, for 27.5kV and this provides standards and guidelines for the design, manufacture, and use of 55kV AC current transformers.

---Part 4: Voltage Transformers. The purpose is to specify the requirements for application and environmental conditions, including ratings, design, and manufacturing.

Type testing and factory testing requirements are specified, along with the documents provided with the purchase order, tender, and inquiry form, as well as transportation details.

It provides guidance on transmission, storage, installation, operation and maintenance rules, safety, and the environmental impact of products, for 27.5kV and this provides standards and guidelines for the design, manufacture, and use of 55kV AC voltage transformers.

---Part 5.27.5kV and 2×27.5kV Metal-Enclosed Switchgear and Controlgear. The purpose is to specify AC metal-enclosed...

Operating conditions, ratings, design and structure, type tests, factory tests, inspection rules, and operation of switchgear and control equipment.

Rules for transmission, storage, installation, operation and maintenance, and security requirements.

Rail Transit Ground Equipment High-voltage AC switchgear and instrument transformers Part 1: Circuit Breakers

1 Scope

This document specifies the normal and special operating conditions, ratings, design and structure, inspection rules, and circuit breaking procedures for AC circuit breakers used in rail transit.

Equipment selection guidelines, information provided with the inquiry form, tender documents, and order, rules for transportation, storage, installation, operation, and maintenance, safety, and product compatibility.

The environmental impact was discussed, and the corresponding experimental methods were described.

This document applies to AC circuit breakers with an operating frequency of 50Hz and rated voltages of 27.5kV, 2×27.5kV, and 55kV.

This document also applies to the operating mechanisms of circuit breakers and their auxiliary equipment.

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 1402-2025 Voltage of Traction Power Supply System for Rail Transit (IEC 60850:2014, MOD) Note. There are no technical differences between the content referenced in GB/T 1402-2025 and the content referenced in IEC 60850:2014.

GB/T 1984-2024 High-voltage AC circuit breakers (IEC 62271-100:2021, MOD) GB/T 2900.1 Basic Terminology for Electrical Engineering GB/T 2900.19 Electrical Terminology. High Voltage Testing Techniques and Insulation Coordination GB/T 2900.20 Electrical Terminology - High Voltage Switchgear and Controlgear (GB/T 2900.20-2016, IEC 60050-441) 1984, MOD) GB/T 4208-2017 Degrees of protection provided by enclosures (IP code) GB/T 4796.1 Classification of Environmental Conditions Part 1: Environmental Parameters and Their Severity GB/T 4797 (all parts) Classification of Environmental Conditions - Natural Environmental Conditions [IEC 60721-2 (all parts)] Note. GB/T 4797.1-2018 Classification of Environmental Conditions - Natural Environmental Conditions - Temperature and Humidity (IEC 60721-2-1:2013, MOD);

GB/T 4797.2-2017 Classification of Environmental Conditions - Natural Environmental Conditions - Atmospheric Pressure (IEC 60721-2-3:2013, IDT);

GB/T 4797.3-2024 Classification of Environmental Conditions – Natural Environmental Conditions – Part 3: Living Things (IEC 60721-2-7:2018, MOD);

GB/T 4797.4-2019 Classification of Environmental Conditions - Natural Environmental Conditions - Solar Radiation and Temperature (IEC 60721-2-4:2002, IDT);

GB/T 4797.5-2017 Classification of Environmental Conditions - Natural Environmental Conditions - Precipitation and Wind (IEC 60721-2-2:2012, IDT);

GB/T 4797.6-2013 Classification of Environmental Conditions - Natural Environmental Conditions (Dust, Sand, Salt Spray) (IEC 60721-2-5:1991, MOD);

GB/T 4797.7-2008 Classification of Environmental Conditions for Electrical and Electronic Products - Natural Environmental Conditions - Seismic Vibration and Shock (IEC 60721-2-6) 1990, IDT);

GB/T 4797.9-2021 Classification of Environmental Conditions - Natural Environmental Conditions - Shock and Vibration Data Measured During Storage, Transportation and Use (IEC 60721-2-9:2014, IDT).

GB/T 4798 (all parts) Classification of environmental conditions - Classification of environmental parameter groups and their severity levels [IEC 60721-3 (all parts)] part)] Note. GB/T 4798.1-2019 Classification of Environmental Conditions - Classification of Environmental Parameter Groups and Their Severity Grading - Part 1: Storage (IEC 60721-3-1.