GB/T 45942-2025 Active National standards

GB/T 45942-2025 Mineral oil-filled electrical equipment—Application of dissolved gas analysis(DGA) to factory tests on electrical equipment

Publish Date: 2025-08-01 Implement Date: 2026-02-01 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 45942-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Electrician's insulating materials and their products

ICS Name: Insulating fluid

Publish Date: 2025-08-01

Implement Date: 2026-02-01

Pages: 16 pages

Scope

This document specifies the sampling procedures, analysis requirements, and steps for conducting dissolved gas analysis in transformer oil during factory testing of electrical equipment (such as power transformers, reactors, and transformers) filled with mineral insulating oil. It also stipulates the requirements for sensitivity, repeatability, and accuracy.
This document applies to the temperature rise test, overcurrent test, long-term no-load test, and insulation test of power transformers and reactors, as well as the impulse test of transformers.