Problems to be noticed in the type and selection of key switch
Release time：2019-08-08 Clicks： Click
When using the key switch, we should pay attention to some problems. We should pay attention to the types and purchases. We will introduce the details below.
Switches must be familiar to everyone. We have all kinds of switches in our daily life. They can control circuit and equipment. Today we want to talk about key switches. Although they are rare in our daily life, electricians should be accustomed to them. We all know about ordinary switches. How to apply it, but what about the button switch? In the next article, we will introduce the instructions for the use of the button switch, so that everyone can understand how to use it correctly.
The key switch is actually a device that requires people to send out various signals manually to control the circuit or equipment. It mainly pushes the transmission mechanism through the key to achieve the switch of opening and disconnecting the static and dynamic electric contacts. Generally, the basic start, stop, speed change and so on can be controlled through it. A key switch is Two pairs of electric shocks, each consisting of a normally open and normally closed electric shocks, when pressed, two pairs of electric shocks will simultaneously send out action, the normally closed contacts are disconnected, and the often open contacts are closed.
Speaking of the instructions for the use of key switches, first of all, we need to know its specific application. Generally, in various electrical automatic control circuits, people can manually send out control signals to control various contactors, relays, electromagnetic starters and other devices. Everyone must choose according to the use of environmental occasions and so on.
There are many kinds of button switches, if you need to choose, you must first make clear its use environment and purpose, such as embedded in the operation panel, which can be chosen to open, and some need to display the working status of the equipment, then you need to select cursor type, and in some cases it is easy to misoperate. In this case, the key-operated key switch is suitable.
People who have seen the button switch should know that the color of the button is different. The most common ones are red, black, white, green and so on. Green can be used as the start button. The emergency stop button needs to be red. The stop button can be black, grey or white. According to the requirements of different circuits, it needs to be determined. The number of buttons needed, such as single button, double button and triple button, is common.
It should be noted that the installation and use of key switch must ensure safety and reliability. That is to say, it is necessary to repeatedly check whether the key switch is firm and reliable. If the key switch needs to be placed in high temperature situation, it is easy to deform and cause loosening. In this case, it is necessary to insert a set on the connection screw. Edge plastic pipe to prevent short circuit.
Above for you a detailed description of the use of key switches, I believe you also know, if you need to install key switches, we must pay attention to the correct use, to prevent safety incidents, I hope these are helpful to you.