精品国产免费久久久久久,99视频九九精品视频在线观看,免费的视频网站入口,久久国内,福利视频亚洲,h小视频在线观看网

Scan code consultation:
0755-2102 2109
Technology
Technology
Current location: Home Technology Ex tech
Selection principles for explosion-proof electrical equipment in explosive locations

SINO Testing Services

| 2021-01-19|Return

Before selecting electrical equipment for use in explosive hazardous areas, the following should be clarified:

1. The category of the hazardous environment for explosion is whether it is an explosive gas environment or an explosive dust environment. The electrical equipment of different explosive mediaExplosion proof structural requirementsIt's different.

2. Explosion levels of explosive gas mixtures in the environment, namely IIA, IIB, and IIC. This is the polarization corresponding to the maximum test safety gap and minimum ignition current ratio of the equipment. Its level depends on the generation of explosive gasesZhongnuo TestingThe medium varies, such as propane belonging to IIA, ethylene belonging to IIB, acetylene and hydrogen belonging to IIC. As the maximum test safety clearance and minimum ignition current ratio of explosion-proof electrical equipment decrease step by step from IIA to IIC, the explosion-proof requirements gradually increase

3. The group or ignition temperature of explosive gas mixtures in the environment. This is flammableZhongnuo TestingThe minimum temperature at which a mixture of gas or vapor of a substance and air is ignited by a hot surface under specified conditions. As the ignition temperature decreases from group T1 to T6, the explosion-proof requirements for their electrical equipment gradually increase

4. Requirements for the selection of explosion-proof electrical equipment in the surrounding environment. When selecting explosion-proof electrical equipment, different environmental conditions such as chemical, mechanical, thermal, and fungal factors in the surrounding environment should be considered simultaneously.

After considering the above basic requirements, explosion-proof electrical products that meet the requirements can be selected. When some electrical equipment that must be arranged in explosive hazardous areas cannot meet the explosion-proof requirements of the site, positive pressure ventilation measures can be adopted to achieve itexplosion-proofThe requirements.


Related Recommendations
Contact us
0755-2102 2109
Add: 13F, Building C, Kangjia Guangming Technology Center, No. 288 Xingxin Road, Guangming District, Shenzhen
Follow us
Copyright: Shenzhen Zhongnuo Testing Technology Co., Ltd. 粵ICP備18004888號
Service Hotline
18924609560
點擊這里給我發消息 1354407946
點擊這里給我發消息 1354407946
主站蜘蛛池模板: 色四月婷婷 | 久久久精品麻豆 | 国产成人青青热久免费精品 | 六月婷婷激情综合 | 久久久www成人免费精品 | 精品国产区 | 热99视频| 99久久99久久精品 | 福利一区二区三区视频在线观看 | 久久久这里有精品 | 四虎永久免费影院在线 | 日本高清色视频高清电影 | 久久99国产亚洲高清观看首页 | 清纯唯美亚洲综合日韩第 | 天天干夜夜做 | 日本福利一区二区 | 看片视频在线观看 | 国内a级毛片免费··· | 国产精品亚洲精品日韩已满 | 蜜臀国产在线 | 中文字幕天天躁日日躁狠狠躁免费 | 国产ww久久久久久久久久 | 亚洲五月激情 | 欧美在线性 | 奇米影视777第四色 奇米影视4色 | 久久国产麻豆 | 久久精品2| 天堂的男人 | 国产亚洲女人久久久久久 | 大陆高清自拍 | 男人的天堂久久香蕉国产 | 一级毛片免费 | 亚洲综合成人网在线观看 | gogogo免费视频观看 | 99在线观看精品 | 日韩视频在线观看一区 | 99精品国产免费久久国语 | 国产精品一区二区手机看片 | 国产精品亚洲综合色拍 | 激情开心婷婷 | 成人黄色免费看 |