how to check the 3ph capacitor is good or not.

Answer Posted / andrew

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 ?    30 Yes 5 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how we design a pannel to start 10HP motor with the help of star delta starter?

1750


What are the components of feedback control system?

626


what is transient enclosure vltage , very fast transients, very fast transient over voltages

1650


do we use neutral grounding for resistive balanced load? if we use what happen?

1339


how much maximum load a 2 core (Single phase) 16mm aluminium wire can take ?

2194






what is gas turbine intercooling ?

1615


what is PID control in VFD drives?

1509


in ACB breaker requireding 3200Amps. buscoupler getting OFF mode and again it reset and getting normal position give me a required answer?

1843


What is clock position of Transformer?what are the clock positions are there?and what is different of them?

2622


whats the differece between Exd and Exe

4289


how much excitation voltage required to generate 1mw power?

1605


Sate maximum power transfer theorem?

701


What is an iron loss or core loss pi?

636


What do you mean by transformation ratio of instrument transformer?

636


Give some differences between open loop and closed loop control systems.

673