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European standards for terminal blocks

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.

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Related materials for terminal blocks

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.

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Reliability screening test for terminal folding failure prevention

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.

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Common faults in terminal blocks

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.

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Scope of application for folding of terminal blocks

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.

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National standards for terminal blocks

National standards for terminal blocks

No. Standard No. Standard name Approval or release date Implementation date 1 GB/T14048.1 Low-voltage switchgear and controlgear General provisions 2000-10-17 1993-01-04 2001-07-01 1993-07-01 2 GB14048.2 Low-voltage circuit breakers 2001-11-21 1994-04-12 2002-11-01 1994-12-01

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