GB/T 1094.4-2005
Power transformers.Part 4:Guide to the lightning impulse and switching impulse testing.Power transformers and reactors (English Version)

Standard No.

GB/T 1094.4-2005

Language

Chinese, Available in English version

Release Date

2005

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 1094.4-2005

Replace

GB/T 7449-1987

Scope

The purpose of this part is to provide a guideline and make some explanations for the current methods of lightning impulse and operating impulse tests for power transformers, as a supplement to GB 1094.3. This part is also generally applicable to the reactor test (see GB/T 10229). When it is different from the test method used for power transformers, a special description will be given separately. This part includes aspects such as waveform, test circuit together with test wiring, implementation of grounding during test, fault detection method, test procedure, measurement technique and test result judgment. Some of the test techniques described in this section adopt the content recommended by GB/T 16927.1 and GB/T 16927.2 as much as possible.

GB/T 1094.4-2005 Referenced Document

• GB 1094.3 Power transformers Part 3: Insulation levels,dielectric tests and external clearances in air
• GB/T 10229 Reactors
• GB/T 16896.1 Instruments and software used for measurements in high-voltage impulse tests Part 1:requirements for instruments
• GB/T 16927.1 High-voltage test techniques.Part 1:General definitions and test requirements*， 2011-12-30 Update
• GB/T 16927.2 High-voltage test techniques.Part 2:Measuring systems*， 2013-02-07 Update

GB/T 1094.4-2005 history

• 2013 GB 1094.1-2013 Power transformers.Part 1: General
• 1996 GB 1094.1-1996 Power transformers. Part 1: General
• 1985 GB 1094.1-1985 Power transformers--Part 1: General
• 0000年 GB 1094-1979

GB/T 1094.4-2005 Power transformers.Part 4:Guide to the lightning impulse and switching impulse testing.Power transformers and reactors has been changed from GB/T 7449-1987 Guide to the lightning impulse and switching impulse testing of power transformers and reactors.

GB/T 1094.4-2005 -All Parts