Double control switch introduces the knowledge of switching equipment.

Double-control switch and switch cabinet are essential products in decoration, and the circuit is closely related to our life safety. Therefore, switches must not be ignored in home decoration, and it is very necessary to know some switch knowledge. So what are dual-control switches and switchgear? Let me introduce the knowledge of Fuwo's dual-control switch and switchgear.

I. Double-control switch

Double-control switches are generally used in two different places, such as the upper and lower floors of stairs or the two ends of walkways, which can independently control the lighting or extinguishing of the same lamp. As shown in the figure, three different connections are provided. S 1 and S2 are 1×2 SPDT switches, which can independently control the turn-on or turn-off of the lamp e. The connection in Figure (b) is easy to install, because each switch has a phase line and a zero line of the power supply, but special attention should be paid to the short circuit at both ends of the phase line and the zero line during maintenance.

Second, the switch cabinet

Switchgear is a kind of electrical equipment. The outside line first enters the main control switch in the cabinet, and then enters the sub-control switch, and each branch is set as needed. Such as instruments, automatic control, motor magnetic switch, various AC contactors, etc.

Some are equipped with high-voltage room and low-voltage room switchgear, high-voltage buses, such as power plants, and some are also equipped with low-cycle load shedding protection main equipment. Three. General classification of switchgear

1, low-voltage draw-out switchgear

2. AC low-voltage distribution cabinet

3. Metal armored detachable switch cabinet

4. Low-voltage fixed separation switchgear

5, high voltage capacitor cabinet

6, high voltage switchgear

That's all about the introduction of double-control switch and switchgear. I believe you will have a clearer understanding after reading it. I hope this article can help you. Please continue to pay attention to Fuwo Zhuangjie. More home improvement knowledge.