GB/T 47024.2-2026 Active National standards

GB/T 47024.2-2026 Special test methods for electrical equipment at high altitudes—Part 2:AC/DC combined voltage

GB/T 47024.2-2026 Special test methods for electrical equipment at high altitudes—Part 2:AC/DC combined voltage

Publish Date: 2026-02-27 Implement Date: 2026-06-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 47024.2-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Power transmission and transformation equipment

ICS Name: Comprehensive Electrical Engineering

Publish Date: 2026-02-27

Implement Date: 2026-06-01

Pages: 20 pages

Scope

This document describes the method for conducting power frequency/DC composite voltage tests on electrical products in plateau areas, including the test principle, test conditions, test circuit and parameter calculation, test process, test result evaluation, and test report.
This document is applicable to electrical products that require power frequency/DC composite voltage tests in plateau areas with altitudes above 1,000 m and up to 5,000 m, and with AC voltages above 10 kV and DC voltages above 3 kV.
Electrical products in other altitude ranges should be implemented in accordance with this document.

Development Information

Word Count: 23 Thousand words Pages: 20 pages

Same series standard

GB/T 47024.1-2026 Special test methods for electrical equipment at high altitudes—Part 1:AC/harmonic combined current

Referenced Standards

GB 311.1-1997 Insulation co-ordination for high voltage transmission and distribution equipment GB/T 311.1-2012 Insulation co-ordination—Part 1:Definitions,principles and rules GB/T 1094.3-2003 Power transformers—Part 3:Insulation levels,dielectric tests and external clearances in air GB/T 1094.3-2017 Power transformers—Part 3:Insulation levels,dielectric tests and external clearances in air GB/T 1408.1-1999 Methods of test for electric strength of solid insulating materials-Tests at power frequencies GB/T 1408.1-2006 Electrical strength of insulating materials—Test methods—Part 1:Tests at power frequencies GB/T 1408.1-2016 Insulating materials—Test methods for electric strength—Part 1:Test at power frequencies GB/T 4109-1999 Technical specification of high voltage bushing GB/T 4109-2008 Insulated bushings for alternating voltages above 1 000 V GB/T 4109-2022 Insulated bushings for alternating voltages above 1 000 V GB/T 7354-2003 Partial discharge measurements GB/T 7354-2018 High-voltage test techniques—Partial discharge measurements GB/T 11022-1999 Common specifications for high-voltage switchgear and control gear standards GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards GB/T 11022-2020 Common specifications for high-voltage alternating-current switchgear and controlgear standards GB/T 16927.1-1997 High-voltage test techniques Part 1:General test requirements GB/T 16927.1-2011 High-voltage test techniques—Part 1:General definitions and test requirements

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