JB/T 9647-2014Buchholz Relay (English PDF)

JB/T 9647-2014 is the English-translated version of 变压器用气体继电器.

The Buchholz relay, the gas relay fitted to oil-filled transformers, is the subject of JB/T 9647-2014, a recommended standard of the Chinese machinery industry. It defines the terms used for the transformer gas relay, fixes the product types and the basic dimensions, and then gives the technical requirements, the test items and test methods, and the rules for marking, packaging, transportation and storage. Its scope is the gas relays used on oil-filled and oil-immersed equipment. It is applied with GB/T 191, GB/T 2900.15, GB 4208 and JB/T 8448.1, and it is classified K41 with international classification 29.180. It supersedes JB/T 9647-1999. Issued on 6 May 2014, it has applied since 1 October 2014.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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