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How to analyse and test the mechanical properties of terminal blocks
For terminal blocks, in the production process, mechanical performance testing is very important, then how to achieve the mechanical performance of terminal block testing? Let us know it together. Terminal with industrial automation and industrial control requirements more and more strict and precise, the amount of terminal blocks gradually rise. With the development of the electronics industry, the use of terminal blocks more and more, and more and more types.
European standards for terminal blocks
In Europe the current rating of a component is determined by monitoring the temperature of the metal conductor as the current increases. When the temperature of the metal pin is 45°C above the ambient temperature, the measurer takes the current at this point as the nominal current value (or current value) for the device. another IEC specification is the allowable current value, which is 80% of the current. In contrast, the UL standard takes as the nominal current value of the device 90% of the current value when the temperature of the metal conductor is 30°C higher than the ambient temperature.
Related materials for terminal blocks
The material of the female or male terminal shall be a copper alloy, or a plated copper alloy, nickel or nickel alloy. Exception: if the construction of the appliance or apparatus permits, the female or male terminals may be electroplated plates or non-plated but corrosion resistant alloys.
Reliability screening test for terminal folding failure prevention
In order to ensure the quality and reliability of terminal blocks and to prevent the occurrence of the above-mentioned fatal failures, it is recommended that the following targeted reliability tests for the prevention of failures be carried out in accordance with the technical conditions of the products and the research and development of the corresponding screening technology requirements.
Common faults in terminal blocks
The plastic insulating material and the conductive parts of the terminal are directly related to the quality of the terminal, they determine the insulation and conductive properties of the terminal respectively. Any one terminal failure will lead to the failure of the entire system engineering. This aspect of domestic and foreign occurrence of painful lessons is very deep.
Scope of application for folding of terminal blocks
This standard specifies various methods for identifying the terminals of electrical equipment (hereinafter referred to as equipment) and establishes general rules for identifying the terminals of equipment and the wire ends of specific conductors by means of an alphanumeric system.