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。

If no open phase protection is available during the operation course of three-phase equipment, it shall operate abnormally under open phase condition or shall be burnt if the case is serious.

如果不能在运行过程中对三相设备进行缺相保护，则会使三相设备在断相情况下异常工作，轻则设备运行不正常，重则烧毁三相设备。

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。

The RPG file open can occur implicitly during the RPG initialization phase or explicitly via the RPG open operation and the use of the USROPN keyword on the file definition.

RPG文件打开可以在RPG初始化阶段隐式发生，也可以通过RPG OPEN操作或在文件定义上使用USROPN关键字显式发生。

This isn't totally unheard of in building open source projects; what's unusual is that it doesn't all get caught by the "configure" phase, because there isn't one.

这在构建开源项目时是完全不存在的；尤其不一样的是这一切不能在一个“配置”阶段中完成，因为根本就不存在这样一个过程。