Standard No.:	JB/T 9647-1999
English Name:	Gas Relay
Chinese Name:	气体继电器
Professional Classification:	JB    Professional Standard - Machinery
Source Content Issued by:	SAMI
Issued on:	1999-8-6
Implemented on:	2000-1-1
Status:	superseded
Superseded by:	JB/T 9647-2014 Buchholz Relay
Superseded on:	2014-10-1
Superseding:	ZB K 45015-1989 气体继电器
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	224.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the type and size, technical requirements, test methods, inspection rules as well as marking and packing of gas relay products used for oil-immersed type transformer. This standard is applicable to gas relays (hereinafter referred to as relay) used for all the oil-immersed type transformers and oil-immersed no-load tapping switch protection. 2 Normative References The provisions of the following standard, through reference in this standard, constitute the provisions of this standard. When this standard is published, the editions indicated are valid. As all the standards will be revised, each party using this standard shall discuss the feasibility of using the latest edition of the following standards.

Contents Foreword I 1 Scope 2 Normative References 3 Definitions 4 Type and Base Dimension of Relay 5 Technical Requirements 6 Test Method and Inspection Rules 7 Marking, Packing, Transportation and Storage