Electrical appliance refers to all appliances that use electricity. From a professional point of view, it mainly refers to the connection and disconnection of circuits, and the transformation of circuit parameters to achieve control and adjustment of circuits or electrical equipment. The electrical equipment, equipment and components that are used for switching, detection, and protection, etc. From the perspective of the general public, they mainly refer to some household-used electrical devices that provide convenience for life, such as televisions, air conditioners, refrigerators, washing machines, and so on. Kinds of small household appliances and so on.
1, for turning on and off the circuit of electrical appliances, such as contactors, knife switches, load switches, disconnectors, circuit breakers, etc.;
2, for the control circuit of electrical appliances, such as electromagnetic starter, auto decompression starter, varistor, control relays, etc.;
3, for the switching circuit of electrical appliances, such as the switch, the main command electrical appliances;
4, for the detection of circuit coefficients of electrical appliances, such as transformers, sensors, etc.;
5, for the protection of electrical circuits, such as fuses, circuit breakers, arresters and so on.
1. Electromagnetic appliances: work according to the principles of electromagnetic induction, such as contactors, various types of electromagnetic relays, etc.;
2. Non-electricity control electric appliances: Electric appliances that rely on external force or a change in a non-electrical physical quantity, such as knife switches, limit switches, buttons, speed relays, temperature relays, etc.