distribution box electrical enclosure Introduction:
This is classical distribution box. which can be equipped with various modular electrics for the function of terminal power distribution. It is widely used in low voltage distribution networks for power supplying of consumers and commercial buildings.
Now living conditions have been improved, for safety also began to pay attention to, in the previous home in general family switch may be a piece of wood, with a switch, then the conditions of good families can use the distribution box, but now is not the same, basically household distribution box, every family can see, The role of domestic distribution box first is much safer than the switch on the board, but also very beautiful, he has a good function, such as distribution box electrical enclosure circuit appears leakage, household distribution box himself will react and break the power supply in time, can say it is to the life safety, and property safety of the very large protection measures, For example, we often hear and see some old residential buildings, because of electrical problems caused by fire, resulting in very large losses. So how to achieve this function of the household distribution box, in fact, in the household distribution box with an electrical component, the delivery of leakage protector on the line.
Leakage protector means to protect the circuit when there is leakage. Leakage protector has leakage current detection and control processing and implementation of protection and so on. distribution box electrical enclosure working principle is actually the AC 220V mains through the protection switch K1 and current transformer TA output lead to load, normally, the power supply phase line and the zero line in an instant the current size is the same, the direction is opposite. That is because the magnetic flux emitted in the TA iron core of the ct resists each other, and THE TA induction coil L3 has no voltage induction.
If there is leakage or electric shock, the current size of the phase line and the zero line is not equal, their magnetic flux can not completely offset, L3 will produce an induced voltage. If the integrated circuit IC1 input is amplified after processing, IC1 pin output trigger signal let thyristor and conduction compete with each other, if the action becomes "off" this situation, then after the fault is eliminated, it is necessary to close their own hands.
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