隔爆型电气设备最大允许结构间隙值的确定

The Determination of Maximum Allowable Structure Gap of the Electrical Equipment for Separating Explosion

目的 为隔爆电气设备的制造提供理论依据 .方法 利用间隙隔爆原理 ,对可燃气体 (或蒸气 )的最大试验安全间隙值进行测定 .结果 得到了与 IEC79标准接近的测试数据 .结论 考虑一定安全裕度 ,隔爆型电气设备最大允许结构间隙值应小于此最大试验安全间隙值 .

Aim\ To offer the basis to design electrical equipment for separating explosion. Methods\ A method of test for ascertainment of the maximum experimental safe gap of combustible gases or vapors is presented. Based on this method, the experimental results with several combustible gases(or vapors)are obtained. Results\ The tested data are close to the IEC standard. Conclusion The maximum allowable structure gap of electrical equipment for separating explosion must be less than the maximum experimental safe gap.