Answer / 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.

Answer / nikita

MPP means Metalised Poly Polypropylene which have life is minimum.APP means all polypropylene which have more life.APP is more superior.

Answer / roshan

MPP is having less losses and less running cost but its life is also less.APP is having high losses compared to MPP and its life is more

Answer / sabariesh

Dear manoj paliwal sir,

Kindly explain some more briefly regarding APP and MPP with diagram.i am not clear about what u mention.its my humble request.

Answer / a.ramaprasad

I have no answer, But like to know How a few are saying no to the above good answer

what is cogging in motors?

1 Answers  

what phase and neutral.

3 Answers   HP,

what is the difference between oil surge relay and buchholz relay.

0 Answers   MPPEB, Suparco,

Which level of the Transformer oil got dielectric strengh? And why?

0 Answers   HSL,

why the motor running in delta connection ? it can be in star?

13 Answers   NTPC,

why we use the fuse in only one wire? althrough in ac current the current flows in both directions. why the neutral wire can be taken half the magnitude of phase wire while same current returns from neutral wire?

2 Answers   Bhel,

Why the transformers making noise?

2 Answers   L&T,

Why AC loads wont used in DC input supply? and Why DC loads wont used in AC input supply?

3 Answers   Bhel,

what is the function of commutator in dc motor?

52 Answers   Aviation, HP, Raj Construction, TCE, University Exams,

If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?

0 Answers   Amara Raja,

what is the voltage present in the telephone?

10 Answers   Infosys,

what is ripple component in ac supply?

2 Answers