There exists some problems in using the common alternating current contactor. It improves after having used the vacuum contactor.
普通交流接触器在使用中存在一定的问题，改用真空交流接触器效果良好。
The utility model relates to a power saving device for an alternating current contactor, composed of a casing, a starting system and a maintaining system.
本实用新型是一种交流接触器的节电器，由壳体、启动系统、维持系统组成。
Method The automatic ventilation and gas exchange system consisted of 2 electronic modulators, alternating current contactor, 1 switch, 1 oxygen meter and some seamless steel tubes.
方法自动通风换气系统由2个电动调节阀、1个交流接触器、1个开关、1台测氧仪、少量无缝钢管组成。
应用推荐