GB/T 25890.4-2026 Pending National standards

GB/T 25890.4-2026 Railway applications—Fixed installations—DC switchgear—Part 4:Outdoor d.c.disconnectors,switch-disconnectors and earthing switches

GB/T 25890.4-2026 Railway applications—Fixed installations—DC switchgear—Part 4:Outdoor d.c.disconnectors,switch-disconnectors and earthing switches

Publish Date: 2026-01-28 Implement Date: 2026-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 25890.4-2026

Standard Type: National standards

Standard Status: Pending

is_force_gb: no

CCS Name: Traction substation

ICS Name: Electric traction equipment

Publish Date: 2026-01-28

Implement Date: 2026-08-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国轨道交通电气设备与系统标准化技术委员会(SAC/TC 278)

Pages: 28 pages

Scope

本文件规定了牵引供电系统地面装置中户外直流隔离开关、负荷开关和接地开关的工作条件、开关特性、结构和性能要求、信息和标识、检验规则,描述了相关试验方法。
本文件适用于牵引供电系统地面装置中户外直流隔离开关、负荷开关和接地开关的选型和检验。
本文件不适用于成套开关设备、电磁兼容(EMC)和可靠性的要求。
注1:成套开关设备、电磁兼容(EMC)和可靠性的要求在GB/T 25890的其他部分中规定。
注2:本文件中,“开关”是指GB/T 25890.1—2026中3.1.5、3.1.6和3.1.7所定义的“直流隔离开关、负荷开关或接地开关”。

Development Information

Drafting Units:

中铁电气化勘测设计研究院有限公司、中铁第四勘察设计院集团有限公司、天津长澳电器有限公司

Drafting Persons:

梁勇、周玉杰、李聚、周阳、冯学良

Word Count: 37 Thousand words Pages: 28 pages

Same series standard

GB/T 25890.1-2026 Railway applications—Fixed installations—DC switchgear—Part 1:General GB/T 25890.2-2026 Railway applications—Fixed installations—DC switchgear—Part 2:DC circuit breakers GB/T 25890.3-2026 Railway applications—Fixed installations—DC switchgear—Part 3:Indoor d.c. disconnectors,switch-disconnectors and earthing switches GB/T 25890.5-2026 Railway applications—Fixed installations—DC switchgear—Part 5:DC switchgear assemblies

Replace the following standards

GB/T 25890.4-2010 Railway applications—Fixed installations—DC switchgear—Part 4:Outdoor d.c.disconnectors,switch-disconnectors and earthing switches

Referenced Standards

GB/T 1402-2025 Railway applications—Supply voltages of traction systems GB/T 1985-2023 High-voltage alternating current disconnectors and earthing switches GB/T 4208-2017 Degrees of protection provided by enclosure(IP code) GB/T 11022-2020 Common specifications for high-voltage alternating-current switchgear and controlgear standards GB/T 32350.1-2015 Railway applications—Insulation coordination—Part 1:Basic requirements—Clearances and creepage distances for all electrical and electronic equipment GB/T 32350.1-2025 Railway applications—Insulation coordination—Part 1:Basic requirements—Clearances and creepage distances for all electrical and electronic equipment GB/T 25890.1-2026 Railway applications—Fixed installations—DC switchgear—Part 1:General GB/T 25890.5-2026 Railway applications—Fixed installations—DC switchgear—Part 5:DC switchgear assemblies

Adopt standards

IEC 61992-4:2015

Related Standards

GB/T 3317-1982 Replaced

GB/T 3317-1982 General technical specifications for electric locomotives

Publish Date: 1982-12-24

GB/T 3318-1982 Replaced

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Publish Date: 1982-12-24

GB/T 6927-1986 Abolished

GB/T 6927-1986 Characteristics and tests of electrodynamic and electromagnetic braking systems

Publish Date: 1986-09-23

GB 1402-1998 Replaced

GB 1402-1998 A.C.Voltage of electric traction for the railway main lines

Publish Date: 1998-12-17

GB/T 3319-1998 Replaced

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Publish Date: 1998-12-17

GB 5914.1-2000 Replaced

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Publish Date: 2000-01-03