The high-power three-composite silver contact adopts the cold upsetting method to upsetting the silver wire at the head and tail of the copper wire respectively, and the shape of the rivet is made through the deformation method of the mold
High power relay is a kind of electronic control device, it has the control system (also known as the input circuit) zhi and the controlled system (also known as the output circuit), usually used in the automatic control circuit, it is actually a kind of "automatic switch" to control the large current with a small current.Therefore, it plays a role of automatic regulation, safety protection and conversion circuit in the circuit.
Electromagnetic high-power relays are generally composed of iron core, coil, armature, contact reed, etc.As long as a certain voltage is applied to both ends of the coil, a certain current will flow through the coil, resulting in electromagnetic effect. The armature will overcome the pull of the returning spring and pull toward the core under the action of electromagnetic force, thus driving the moving contact of the armature to snap together with the static contact (normally open contact).When the coil is cut off, the electromagnetic suction also disappears, and the armature returns to its original position in the reaction force of the spring to make the moving contact and the original static contact (normally closed contact) snap together.Such suction, release, thus achieved in the circuit conduction, cut off the purpose.For the "normally open and normally closed" contacts of high-power relay, they can be distinguished in this way: the static contacts that are disconnected when the high-power relay coil is not energized are called "normally open contacts";A static contact in the on state is called a normally closed contact.
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