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How can you calculate the capacitor used for single phase?

I want the answer with the Deviated formula

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Question added by mustafa محمد صادق السيد , Electrical Engineer , rmc
Date Posted: 2016/03/14
Abdulaziz Abdelrahman Mohamed Mahmoud
by Abdulaziz Abdelrahman Mohamed Mahmoud , Customer Service Sales Representative , A1 ENGINEERING Co. Ltd

Capacitor size C=(I*10^6)/(2πfV) and the power factor PF%=(W*100)/(VI)

Single phase motor cannot start alone as rotating magnetic flux is not generated with single phase supply.

To make rotating magnetic field in stator single phase supply is made like double phase supply with the help of a capacitor and double phase stator winding.

 

For a 230V 50Hz motor 50 MF / HP is a rough and ready starting point. i.e. for a 60W motor use 60/750 X 50 = 4 MF.

muhammad iqbal
by muhammad iqbal , Electrical Engineer , M C DEAN INC< USA

One way is to measure with a Farad meter ( Capacitor should be discharged). Second way, if we know the AC Voltage across and the current flowing through it, then we can determine the Reactance Xc=1/2xpixfxC. Xc=V/I and so C can be calculated in milli Farads or Micro Farads.

Mushreq Abdulmajeed
by Mushreq Abdulmajeed , Senior Project Supervisor , Lagoon Spring Company

I am sorry this is out of my specialist !!!

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