On the 28th of last month, 9 ministries and commissions such as the Ministry of Environmental Protection jointly held the 2011 National Environmental Protection Transformation Action Conference and this year's special action focused on the "Sword and Finger" heavy metal pollution problem. Among them, the rectification of lead battery companies has become the top priority for this year's environmental protection action in China.
According to the data released by the Ministry of Land and Resources, environmental experts estimated that the amount of food contaminated with heavy metals in the country is as high as 12 million tons per year, which is equivalent to the total grain output of Guangdong in a year and can support 40 million people who live in the Pearl River Delta.
According to the Minister of Environmental Protection, Zhou Shengxian, according to the “Twelve Five Year Plan†of the “Comprehensive Prevention and Control of Heavy Metal Pollution,†by 2015, the emission of heavy metal pollutants such as lead, mercury, chromium, cadmium, and metalloid arsenic in key areas was reduced compared to 2007. 15%, and require all localities to comprehensively launch the "Twelfth Five-Year Plan" for comprehensive prevention and control of heavy metal pollution, and lay a solid battle against the comprehensive prevention and control of heavy metal pollution.
According to the "Comprehensive Prevention Plan for Heavy Metal Pollution in the Battery Industry" of the Ministry of Industry and Information Technology, the heavy metal consumption in the battery industry is high, and there is a high risk of heavy metal pollution in the production, recycling, and recycling sectors. Mercury-containing button batteries, mercury-containing zinc-manganese batteries, and nickel-cadmium batteries are disposed of as ordinary garbage after disposal, and there are hidden dangers of heavy metal pollution.
Contact force impact on cold insulation terminal
In cold insulation terminal, the contact force is one of the basic elements.If there isn't enough contact pressure, with good conductive material is also of no help.Because, if the contact force is too low, will produce displacement between conductor and conducting strip, to produce oxide pollution, increased contact resistance caused by overheating.DRTB2.5 wire frame components, for example, only 0.8 Nm to screw torque, can produce up to 750 n actual contact force, and the size of the force had nothing to do with wire section.Therefore, the insulation terminal line pressing box has not subject to any environmental impact, large contact area, contact force of the permanent connection.Small contact voltage drop of the voltage drop size and identify socket one measure of quality.
In the moment, even for a screw with a small value of the voltage drop is still much lower than VDE0611 required limits.At the same time, applying the torque change in large scale, voltage drop is almost the same.Therefore, although different torque size used by operators, but does not affect the quality of connection.This is Insulated Terminals using another prove the reliability of the wire frame.
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