摘要
分析长距离控制线路电压降对接触器可靠吸合的影响,以及导线间电容电流对接触器可靠断开的影响,举例计算满足接触器吸合和断开要求的2.5 mm^2导线允许的AC 220V控制线路最大长度。提出当控制线路允许最大长度无法满足工程需求时的解决方案。
Both the influence of long-distance control circuit voltage drop on the reliable switching-on of contactor and that of capacitance current between conductors on the reliable switching-off of contactor are analyzed. The maximum length of the allowable AC 220V control circuit for 2.5 mm2 conductor satisfying contactor switching-on and switching-off requirements is calculated by an example. The solution is proposed in case the maximum allowable length of control circuit cannot meet the engineering requirements.
出处
《建筑电气》
2018年第2期17-20,共4页
Building Electricity
关键词
接触器
控制回路
吸合功率
保持功率
中间继电器
电压降
接触器可靠断开
接触器可靠吸合
contactor
control circuit
switching-on power
retention power
intermediaterelay
voltage drop
reliable switching-off ofcontactor
reliable switching-oncontactor
