(1) China's national standards stipulate that the accuracy level of active energy meters is 1.0 and 2.0. At the same time, it is stipulated that under the conditions of rated voltage, rated current, rated frequency and cosφ=1, the 1.0-level three-phase electric energy meter works 5000h, and after the other electric energy meter works for 3000h, the basic error should still meet the requirements of the original accuracy level.
(2) An important indicator of the performance of the energy meter is the range of load currents that it can be applied. In the process of using the general energy meter, the circuit does not allow frequent short circuit or the load exceeds 125% of the rated value. However, there is a "wide load electric energy meter", which can expand its current use range, and can ensure that the basic error does not exceed the originally specified value within a certain range of several times the calibration current.
MD -- a printed film formed and then embedded into the plastic injection cavity. Plastic resin on the back of the film combined with ink layer, panel graphics, trademarks placed on the resin film and between injection molding, graphics, trademarks or time will not be worn by friction. It is based on injection molding, shape, size can remain stable, easier to assemble. Therefore, IMD technology is often used in automobiles, communications, electronics, electrical appliances, instruments, instrument panels, complete sets of decoration and function in one.
At present, IMD injection mold decoration technology is widely used in telecommunications, household appliances, electronics, automobiles, instruments and meters, equipment, medical instruments, toys, cosmetics and other industries, is a new type of plastic decoration technology. The change in size can increase the freedom of designers to create customized products of various shapes to meet the needs of The Times.
IMD technology makes injection molding, decoration integration, once completed, can be made into a variety of special effects, such as: convex convex foam, metal, mirror, or eliminate smooth, brush metal patterns, translucent back, convex dot pattern, extremely decorative and functional.
IMD technology is the substitute of plastic coating, the best new technology of electroplating process, reduce the follow-up processing operation of injection molding, promote in the plastic industry, achieve energy saving, environmental protection, means the company will bring huge economic benefits. Socio-economic benefits and environmental benefits.
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Dongguan Nanhuang Industry Co., Ltd , https://www.soushine-nanhuang.com