ALLInterview.com :: Home Page
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   Errors
   Testimonials Refer this Site  Refer This Site to Your Friends  Site Map  Contact Us      
   
 
Categories >> Engineering >> Electrical Engineering
 


 

 
Question how to check the 3ph capacitor is good or not.
 Question Asked In Companies :: MacLellan, Yash Technologies,     < I also faced this Question! >
 Question Submitted By :: guest
  Answer Posted By  
 
Answer
Disconnect the capacitor from the supply and test the
capacitor terminals with a volt meter, you should have the
same voltage at these terminals as the supply voltage the
capacitor was connected to (you should probably not leave
it too long before you test the capacitor as some
capacitors tend to discharge b y themselves over time).
or you can discharge the capacitor by shorting the
terminals WITH A RESISTIVE LOAD you should never short out
a capacitor with that sort of voltage, it will be
danegerous, by using a resistive load, it will take longer
but it will be safer at least.
once you have discharged the capacitor, most decent
multimeters will have a capacitive test function, just test
the capacitor at the terminals and compare the value with
the value written on the side of the capacitpr and this
will also give you an indication of the its condition..
otherwise, call an electrician...

Is This Answer Correct ?    26 Yes 2 No


 
  andrew
 
View All Answers
 
 
Please Help Members By Posting Answers For Below Questions
 
 Question Views   Select
 
what are factors to be consider to design a HT & LT motor? 611
how to find the torque of the single phase synchronous motor by doing an experiment 435
Rotor resistance starter is used to obtain= A increased starting torque B decrease starting current C decrease starting loss D increase efficiency 338
HOW MUCH CURRENT DOES SYNCHRONOUS MOTOR TAKES AT SYNCHRONOUS SPEED IN NO LOAD CONDITION ? 307
What current position are you holding in your current company? 267
WHY BLADE & JOW OF ISOLETOR IN SUBSTATION? 1509
how flow current in 220 kv line to line 408
What is self exciting? 43
why the projects getting loss? 303
how to erect roof control panel? 318
area control error 33
what is the use of permanent magnet generator in exciter 454
What consists of 2 or more thermocouples to be connented series? 255
why all the feeders are designed in a particular manner ... is there any reason for that??? 325
what is negative and zero impedance in 3 phase induction motor ?? 366
E-Mail New Answers        Answer Selected Questions