1·Based on the analysis of main fault types of LV (Low Voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.
通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。
2·The existing defect of overload, open phase protection of minitype flameproof motor used in coal mine was analysed and its improved protection scheme was presented.
分析了煤矿井下小型隔爆电动机过载、断相保护存在的缺陷，提出了改进的保护方案。
3·The paper introduces the working principle, control, protection and related performance of QJZ—400/1140(660) mine flameproof and intrinsically safe vacuum electromagnetic starter.
介绍QJZ—400/1140（660）矿用隔爆兼本质安全型真空电磁起动器的工作原理、控制、保护及相关性能。
4·It is concluded that some attentions must be paid in the design, installation and use of flameproof electrical apparatus.
提出了隔爆型电气设备设计、安装、使用应注意的方面。
1·Chemical grouted or sandwich flameproof glass are easy to become milky white and produces air bulbs and loose basic transparency of glass.
化学灌浆或夹层防火玻璃在紫外线照射下容易变成乳白色及产生汽泡，失去了玻璃基本的通透功能。
2·It supplies ripe experience for enterprise electricity device flameproof.
为企业电器防火提供了成熟的经验。
3·Besides excellent flameproof feature, Monolithic cesiumic potassium flameproof glass is 6-12 times stronger than float glass and 1.5-3 tunes stribger than tempered glass with the same thickness.
单片防火玻璃除具有卓越的防火性能外，在相同厚度下强度上是浮法玻璃的6-12倍，钢化玻璃的1.5-3倍。
4·The new marine hazardous area float switch is flameproof and is available for both submersible and hose-proof duties.
新海运危险领域浮动开关为防火型材质，既能应用于潜水领域又能应用于防水领域。
5·The workers are in flameproof overalls.
工人们穿上防火工装裤。