Relay News

The application of the relay, I believe everyone knows, in the circuit as long as it is powered and powered off, it can work.However, its application details, I don't know if everyone has paid attention. Below are my views.

Power relay is a device that can produce jump in one or more electrical output circuits when the input (or excitation) meets some specified conditions, and can be used in neutral point direct grounding system as the directional element of zero sequence current protection. It is widely used. Today we will talk about the application and working principle of Hongze small power relay.

When the relay works, the electromagnet is energized, the armature is sucked down to make D and e contact, and the working circuit is closed. The electromagnet loses its magnetism when it is powered off, and the spring pulls up the holding iron and cuts off the working circuit. Therefore, the relay is a switch that uses electromagnets to control the on and off of the working circuit.

There are many kinds of relays. According to the input quantity, they can be divided into voltage relay, current relay, time relay, speed relay, pressure relay, etc.; according to the working principle, they can be divided into electromagnetic relay, induction relay, electric relay, electronic relay, etc.; according to the purpose, they can be divided into control relay, protection relay, etc.; according to the change form of input quantity, they can be divided into whether there is relay and measurement relay.

First of all, let's know what electromagnetic relay is, so as to judge their respective standards. Electromagnetic relay is an electronic control device, which has control system (also known as input circuit) and controlled system (also known as output circuit).