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pallavi_902
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Join Date: Jul 2008
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Instrument for measuring Capacitance of Film capacitor

07/06/2008 11:53 PM

I m searching for an instrument which will measure the capacitance of wound film capacitor. This measurement is required before spraying the wound element. Suggest an instrument as soon as possible
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JohnDG
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#1

Re: Instrument for measuring Capacitance of Film capacitor

07/07/2008 4:05 AM

There a many hand-held and bench DVMs available with scales reading capacitance directly (my Wavetek 25XT has scales from 200pF to 20mF (milli-Farad) in decade ranges). Check suppliers such as RS Components and Farnell, or google DVM.

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#2
In reply to #1

Re: Instrument for measuring Capacitance of Film capacitor

07/07/2008 4:32 AM

The measurement is to be done on wound film capacitor so proper contacts are very necessary. Hence i require a very accurate and reliable instrument.
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JohnDG
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#3
In reply to #2

Re: Instrument for measuring Capacitance of Film capacitor

07/07/2008 4:50 AM

Have you tried Globalspec?

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Electroman
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#4

Re: Instrument for measuring Capacitance of Film capacitor

07/07/2008 8:17 AM

What sort of accuracy are you looking for?

What is the testing speed needed?

I have several capacitance bridges, each has its use, the most accurate is good to better than 5 ppm or 0.0005%.

Do you need to measure Dissipation factor?

Of course, if you just need a rough measurement there are plenty of Mickey Mouse digital indicators for sale for £10 or so!!

John

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