2023-11-30
How to protect the circuit through relay contacts?
Under normal temperature and pressure, the key dielectric breakdown voltage in air is 200~300V. Therefore, our goal is generally to control the voltage below 200V or less. Through the relay contact protection circuit, we generally have the following centralized methods to suppress:
2023-11-30
Those things about relays, contactors, electrical contacts, contacts
Those things about relays, contactors, electrical contacts, contacts. Regarding electromagnetic relays and contactors, I believe all electricians are familiar with them. Knowledge about these two kinds of electrical equipment has long been shared by many peers. Today, the author only supplements the contact knowledge of electromagnetic relays and contactors.
2023-11-30
Arc Extinguishing Method for the Contact of Low-voltage Switchgear
Arc Extinguishing Method for the Contact of Low-voltage Switchgear 1. Contact resistance of contacts of low-voltage switchgear The contacts of low-voltage switchgear are an important part of the actuator. The contacts of low-voltage switchgear are used to connect and disconnect the circuit, so the electrical and thermal conductivity required by the contacts is very good. Generally, the contact material is an alloy material of copper, silver and nickel, and it is also formed by plating silver and nickel on the surface of the copper contact.
2023-11-30
Classification and application of electrical contacts and contacts-silver contacts
Classification of electrical contacts According to their contact mode, electrical contacts can be divided into the following three types 1) Fixed connection contacts. Refers to an electrical contact that cannot move relatively between the contact and the connected conductor. Such as bus connectors, electrical equipment lead connections. 2) Sliding contact. A contact mode in which the guide bodies can be kept in contact with each other but one contact surface is allowed to move relatively along the other contact surface is called sliding contact. For example, the expansion joint of the bus bar and the brush of the motor are in sliding contact.