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

State the methods of improving power factor?

0 Answers  

---

How can we calculate the current if we have load in KVA and if the load in KW then what formula will be use for calculating the current. please give both the formula for calculating the current.

3 Answers  

---

describe the Tranformer testing procedure

0 Answers  

---

If carbon brushes spring tension either loose or tight, what happen on Motor performance During Full load Operation?

5 Answers   Electrex, HP, TATA,

---

differentiate between c curve and d curve MCBS?

1 Answers  

---

---

What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning

0 Answers  

---

if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?

0 Answers   First City,

---

What is Toroid?. What is the difference between toroid and Current Transformer

1 Answers   DAE,

---

why phase plates are used in transmission line????

1 Answers  

---

How to calculate ant test the burden of Current transformer

0 Answers   NTPC,

---

what is cable meggering formula for low voltage ?

0 Answers  

---

why only 11kv level is used for transmission purpose? why not 230v?

7 Answers  

---