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What is the difference between MPP, APP, Mixed Dielectric
power capacitors? Which technology is superior in current
scenario?
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Answer Posted / manoj paliwal
APP is All poly polypropylene type capacitor. It consists one layer of aluminium foil and other of polypropylene. Polypropylene is the dielectric medium that is placed in between aluminium layers during wrapping process. Actually every technology is superior it only depends on the situation. You can take an example of truck tyre it can not be used in two- wheeler.APP is like that but it has more watt losses as compare to MPP. Its life is more but costlier than MPP and running cost will be high due to losses.
MPP is metalised polypropylene capacitor. It consists of polypropylene film having aluminum layer on its other side itself.Its life is lessor than APP & Mixed dielectric type but having low losses and running cost is lesser.
Mixed -dielectric capacitor consists of polypropylene film having aluminum layer on its other side itself and another dielectric medium like craft paper dipped in biodegradable oil/ resin placed in between of MPP film during wrapping process Or MPP film dipped in resin/ biodegradable oil. It has better life than MPP,slightly costlier than MPP,same losses like MPP, low losses and running cost is lessor than APP.
In mixed die- electric another technology is using gas as a other die-electric medium. But this technology is banned in Europe & America as it release harmful gases dangerous for human beings during its bursting but in India it is still in use.
NOW A DAYS ALMOST MIXED DIE-ELECTRIC TECHNOLOGY IS WORLD-WIDE USED.
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