WHAT SHOULD WE PAY ATTENTION TO WHEN PURCHASING TERMINALS ON THE INTERNET?

In many electrical accessories, as well as in electrical engineering, the usage of terminals is relatively common. Mainly as the connection between wires, it can carry out the transmission of electricity in batches. It is an important part in the current. So when we choose terminals, we should first have some corresponding understanding of the products, especially the quality of terminals.

Here are a few points for you to pay attention to when purchasing terminals. There are many factors to be considered, including some aspects, such as the wiring environment, space, wiring area, wiring mode, the voltage and current need to pass and internal and external environment, etc..

1. Environmental Factors

Environmental factors are one of the most important reference factors. For example, terminals of high temperature resistant materials should be selected in high temperature environment. In the environment with heavy humidity, terminals with excellent sealing and moisture-proof performance shall be selected, and in the acid-base environment, materials with acid-base resistance shall be selected.

2. Space Size

Under certain conditions, the size of space limits the selection of products. In narrow space, only smaller size terminals can be selected. If the fixed mode is rail type, but the height of the terminal plus rail exceeds the wiring space, then only other fixed terminals can be selected. When the height is enough to connect multiple cables, double-layer or multi-layer terminals are required.

3. Wiring Area

The wiring area is also an important factor affecting the terminal selection. For example, if the area of the cable is 2.5 square meters, we actually need to select the terminal with the wiring area larger than 2.5 square meters. Because in the actual application process, we need to use not only the direct wiring method, but also some accessories to assist the wiring, such as cold terminals, SC terminals, etc. Therefore, the actual operating wiring area will be larger than the cable area.

4. Voltage and Current

The selection of voltage and current is similar to the selection of terminal area. Generally, there is no problem with voltage and current, but high voltage and current will be generated when the circuit is connected or disconnected. Therefore, the voltage and current required in this case is much higher than that in normal working environment, and these factors should be taken into account in the actual selection. For the comprehensive selection of terminals, the actual application environment and foreseeable special circumstances need to be considered.

5. Internal Parts

Because the terminal is a relatively small accessory, although it is just a pattern of a piece of metal or chip, there are many corresponding conductors inside. It is mainly for the current transmission of the conductor and is a very important link in the electricity quantity. Therefore, first of all we should ensure the effectiveness of the internal parts when choosing terminals. It can be tested simply so that we can Judge whether the terminal is good or not.

6. External Whole

If in terms of overall conditions the external terminals are not good, such as cracks, small defects, or the conductor has been disconnected and so on, then this kind of terminal should not be purchased. Because in the process of using this terminal, there must be abnormalities and faults. Only if the external integrity of the terminal is good, then it properly ensures the safety of application.

Therefore, when purchasing terminals, we should not only ensure the safety of their application, but also ensure the advantages of their application. Both inside and outside should be considered, so as to ensure their normal application and safety in electrical engineering. 

Cixi Kefa Electronic Co., Ltd. specializes in the production of all kinds of terminals, terminal blocks, PCB terminals, electronic connectors and precision molds.