You are right. In fact, I tested other frequency points, specifically 20kHz as it's the upper limit of the audible range. I also increased the frequency until the capacitor no longer met the specifications. However, we ultimately opted to keep the video concise since the viewers would get the main idea.
Hello Michael, When conducting leakage testing on capacitors, an Insulation Resistance tester is typically used. Hioki manufactures several models for this purpose. The test involves applying a DC voltage to the capacitor and measuring the leakage current after a set amount of time. The capacitor's datasheet will typically provide the test conditions and limits. If you were to test a leaky capacitor on an LCR meter, you may observe differences in certain measured parameters compared to a good capacitor of the same part number. For example, a leaky capacitor may show a decrease in capacitance, indicating a loss of its ability to hold a charge. Additionally, a higher than expected Dissipation Factor (DF), which measures energy loss due to internal resistance or leakage, or a higher Equivalent Series Resistance (ESR) reading may be observed. However, it's important to note that an LCR meter may not always detect small leaks or defects in a capacitor. Therefore, it may be necessary to use other testing methods for a more accurate diagnosis.
Thank you!
can you test elastomer or polymer films with the hioki lcr meter?
What is the model of the test fixture used?
I was expecting to see the bipolar capacitances also at 1kHz - 10kHz and 20kHz...
You are right. In fact, I tested other frequency points, specifically 20kHz as it's the upper limit of the audible range. I also increased the frequency until the capacitor no longer met the specifications. However, we ultimately opted to keep the video concise since the viewers would get the main idea.
As bayraklarıı :)
I would love to have one of these, but $5-7K is out of the question. Someday, maybe.
Can it perform a leak test?
Hello Michael,
When conducting leakage testing on capacitors, an Insulation Resistance tester is typically used. Hioki manufactures several models for this purpose. The test involves applying a DC voltage to the capacitor and measuring the leakage current after a set amount of time. The capacitor's datasheet will typically provide the test conditions and limits.
If you were to test a leaky capacitor on an LCR meter, you may observe differences in certain measured parameters compared to a good capacitor of the same part number. For example, a leaky capacitor may show a decrease in capacitance, indicating a loss of its ability to hold a charge. Additionally, a higher than expected Dissipation Factor (DF), which measures energy loss due to internal resistance or leakage, or a higher Equivalent Series Resistance (ESR) reading may be observed.
However, it's important to note that an LCR meter may not always detect small leaks or defects in a capacitor. Therefore, it may be necessary to use other testing methods for a more accurate diagnosis.
I use my old, but tried and true Telohmike TO-5 to measure insulation resistance. It's from 1958, but it sure does work!@@ihsand8570