Standard No.:	GB 3836.11-2008
English Name:	Explosive atmospheres - Part 11: Equipment protection by flameproof enclosures d - Method of test for ascertainment of maximum experimental safe gap
Chinese Name:	爆炸性环境 第11部分：由隔爆外壳“d”保护的设备 最大试验安全间隙测定方法
Chinese Classification:	K35    Explosion-proof electric apparatus
Professional Classification:	GB    National Standard
ICS Classification:	29.260.20 29.260.20    Electrical apparatus for explosive atmospheres 29.260.20
Source Content Issued by:	AQSIQ; SAC
Issued on:	1991-05-27
Implemented on:	2009-10-1
Status:	superseded
Superseded by:	GB/T 3836.11-2017 Explosive atmospheres—Part 11: Material characteristics for gas and vapourclassification—Test methods and data
Superseded on:	2018-7-1
Superseding:	GB 3836.11-1991 Electrical apparatus for explosive atmospheres－Method of test for ascertainment if maximum experimental safe gap
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 Part of GB 3836 describes a test method intended for the measurement of the maximum experimental safe gaps for gas- or vapour-air mixtures under normal conditions of temperature 1) and pressure so as to permit the selection of an appropriate group of flameproof enclosures. The method does not take into account the possible effects of obstacles on the safe gaps 2). 2 Terms and Definitions For the purpose of this Part of GB 3836, the following definitions apply. 2.1 Maximum experimental safe gap (MESG) Maximum gap between the two parts of the interior chamber which, under the test conditions specified below, prevents ignition of the external gas mixture through a 25 mm long flame path when the internal mixture is ignited, for all concentrations of the tested gas or vapour in air 3 Outline of Method