Selection Method Of Cold-pressed Terminal

Cold-pressed terminals, that is, insulated terminals, electronic connectors and air connectors, are cold-pressed terminals. It is an auxiliary product used to realize electrical connections, and is industrially classified into connectors. As the degree of industrial automation is getting higher and higher, the requirements of industrial control are becoming more and more strict and accurate, and the consumption of terminal blocks is also gradually increasing. With the development of the electronics industry, the use of terminal blocks is becoming more and more extensive, and there are more and more types of terminal blocks.
Cold-pressed terminals are mainly used for the convenient connection of wires, and one or more wires can be put together for convenience and safety. Because there are many types of terminals, terminal selection has always been a headache for buyers. How to choose a model? First, you need to understand the application environment. Whether a pipe head, round head or fork head is required. There are also round heads and fork heads, you need to pay attention to the size of the diameter of the mounting screws, otherwise it will not be installed at that time.
Second, confirm the condition of the cold-pressed terminal wires. Whether the wire used for the connection is rigid or flexible, and the diameter of the wire. Select the appropriate terminal based on these. Don't buy too big or too small, it will affect the safe use. Confirm the current and voltage that the terminals can withstand. Choosing a terminal with a low load-carrying capacity will cause damage to the terminal and even affect the entire system.
We should also choose to comply with international safety certification standards and support various industrial applications. After the insulation of the circuit or equipment is damaged, in some cases, nearby materials (threaded metal pipes, metal casings of electrical equipment, damp wood, etc.) will leak electricity, making local materials electrified, causing serious or even fatal electric shock to people , produce sparks, arcs, overheating and high temperature, and cause a fire.
When electrical equipment leaks, i.e. is short-circuited, the current forms a closed circuit with the equipment enclosure, protective neutral (protective earth) and neutral (earth). Usually, the leakage current will be so high that it will trip the fuse and cut off the power. However, for many reasons (such as the size of the fuse may be artificially increased several times or replaced with copper wire).
If the grounding device does not meet the requirements, the grounding resistance is large, the grounding terminal of the grounding wire is not firmly connected, the protection device fails or the setting is unreasonable, etc.), the overcurrent protection device will not play the role of overcurrent protection, so once leakage occurs, It will continue to exist, causing electric shock or electrical fire accidents, and many leakage fire cases have also proved this. Subject content and scope of application This standard specifies various methods of identifying electrical equipment (hereinafter referred to as equipment) terminals, and establishes general rules for identifying equipment terminals and specific wire terminals with an alphanumeric system. This standard applies to the identification of equipment (such as resistors, fuses, relays, contactors, transformers, rotating electrical machines, etc.) and the terminals of combinations of these equipment, as well as the identification of specific wire ends. If necessary, the detailed application of these general rules on some products and the necessary auxiliary identification methods can be given in the relevant standards.