Views:333 Author:Site Editor Publish Time: 2020-02-24 Origin:Site
In the operation of electrical equipment, power cable is the carrier of auxiliary electrical equipment. In the electrical equipment installation engineering, the installation and laying of cables is a very important link, and the selection of cable lugs is more important in this link.
A broad range of cable lugs is available for the most diverse applications in the electrical sector. Making the right choice can be more difficult than you think. However, selecting the correct cable lug is the key to a clean and reliable crimping result.
Cable lugs for copper connectors, which are connected to the conductor by means of so-called cold deformation, are among the most common connectors in electrotechnology. They can be generally divided into three groups:
(1)Compression cable lugs to DIN 46235.
(2)Tubular cable lugsas commercially-available standard versions.
(3)Solderless terminals to DIN 46234.
Selecting the correct cable lug also depends on the conductor class to be processed. For example, we offer the following cable lug types for cables to DIN EN 60228:
(1)Class 1, 2, 5 and 6 conductors: Compression cable lugs to DIN 46235.
(2)Class 2 conductors: Tubular cable lugs standard type.
(3)Class 2, 5 and 6 conductors: Solderless terminals to DIN 46234.
To ensure the reliable crimping of conductors with DIN compression cable lugs, the standard recommends crimping tools with die codes to DIN 48083 Part 4. In the case of tubular cable lugs, the specifications of the manufacturer concerned must be observed.
The electrical and mechanical properties of cable lugs also have to comply with standards. The electrical connections must therefore undergo various tests. In addition to a mechanical tensile test, an electrical durability test is also specified. A test cycle simulates practical application. The connection is heated by electricity 1000 times to approx. 120 °C to induce artificial ageing. Between these tests, the tran-sition resistance is checked at regular intervals. Six high-current tests, during which the conductor is heated to approx. 250°C in one second via a short circuit, are also carried out. This high-current test is specified whenever the connector has to be certified as short-circuit resistant. The crimped connection has passed the test if the transition resistance has remained constant through-out. Manufacturers are responsible for guaranteeing the reliability of their connections. The quality of cable lugs is evident even from optical features. Burr-free production and a consistently flat palm are signs of a high-quality product – likewise clean final machining of the tube section.
Connectors are electromechanical components that connect electrical lines. Therefore, the electrical parameters of the connector itself are the first consideration in selecting a connector. The correct selection and use of electrical connectors is an important aspect of ensuring circuit reliability.
In a word, a qualified cable connector can make the connection between the cable and the electrical appliance stronger and safer. The shape of the electrical connector is ever-changing, you can also choose from modeling, color and other aspects according to your own needs.