摘要
针对煤电钻载频短路保护装置时常出现误动作的原因进行了详细的试验分析,证明了实际应用中可以不考虑电缆的物理摆放状态;当负荷电缆长度小于150 m时载频短路保护装置工作基本正常;负荷电缆长度大于150 m时,载频短路保护装置工作不正常,且受电缆的截面积的大小影响将更加明显。
The maloperation cause of carrier frequency short circuit protection device for coal electric drill is tested and analyzed in detail in this research, which proves that Cable physical placement can be ignored in practical application, protect action of carrier frequency is regular when the length of cable is shorter than 150 m, and protect action is abnormal and effected obviously by cross-sectional area of cable when the length of cable is longer than 150 m.
出处
《机电工程技术》
2014年第8期88-89,152,共3页
Mechanical & Electrical Engineering Technology
关键词
煤电钻
短路保护
载频保护
可靠性
coal electric drill
short circuit protection
carrier frequency protection
reliability
