The entry with rubber sealing ring are widely used in the design of low-voltage flameproof motor.
橡胶密封圈式间接引入装置，广泛应用于低压隔爆型电机中。
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。
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。
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