- #1
wasvar2013
- 3
- 0
How do test a power capacitor?
How Do Manufacturers Test Power Capacitors?
Click For Summary
Discussion Overview
The discussion revolves around the testing of power capacitors, focusing on the types of tests that can be performed, the equipment needed, and the specific properties of capacitors that can indicate potential issues. Participants seek clarification on the intended tests and the context of the inquiry.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
- Homework-related
Main Points Raised
- wasvar2013 initially asks how to test a power capacitor without providing specific details.
- Some participants request more information about the type of power capacitor and the specific tests intended, emphasizing the need for clarity to provide useful responses.
- One participant lists various tests typically performed on power capacitors, including thermal stability tests, voltage tests, capacitance measurements, and self-healing tests.
- Another participant questions whether the inquiry pertains to manufacturing product testing and suggests that testing should be part of the initial product specification, mentioning two phases: product design validation and production tests.
Areas of Agreement / Disagreement
Participants generally agree on the need for more specific information regarding the intended tests. However, there is no consensus on the exact nature of the tests or the context of the inquiry, leading to multiple competing views on how to proceed.
Contextual Notes
Some limitations include the lack of specific details from wasvar2013 regarding the tests they wish to perform and the ambiguity surrounding whether the discussion pertains to general testing methods or manufacturing product testing.
Who May Find This Useful
This discussion may be useful for individuals interested in the testing and evaluation of power capacitors, including engineers, technicians, and students in electrical engineering or related fields.
- #2
Bobbywhy
Gold Member
- 1,734
- 52
Welcome, wasvar2013, to Physics Forums!
Will you please give more information? Define Power capacitor: give a link, please, to a technical data sheet of a power capacitor or a journal article describing it. Give circuit (schematic) diagram showing how it is used. Describe exactly what kind of test(s) you want to perform, please. Once you provide this information you may expect members here to give you some useful responses.
Thank you.
Will you please give more information? Define Power capacitor: give a link, please, to a technical data sheet of a power capacitor or a journal article describing it. Give circuit (schematic) diagram showing how it is used. Describe exactly what kind of test(s) you want to perform, please. Once you provide this information you may expect members here to give you some useful responses.
Thank you.
- #3
jim hardy
Science Advisor
Homework Helper
Dearly Missed
- 9,864
- 4,896
What test equipment have you available?
What properties of a capacitor could you measure with your equipment? Which of those would tell you if there's trouble inside the capacitor?
I do initial checks on them with a meter like this:
What properties of a capacitor could you measure with your equipment? Which of those would tell you if there's trouble inside the capacitor?
I do initial checks on them with a meter like this:
- #4
wasvar2013
- 3
- 0
thanks,it's very useful.
- #5
Bobbywhy
Gold Member
- 1,734
- 52
wasvar2013, Will you please supply some details of your intended tests? When you force members to guess what you are trying to do you may never receive satisfactory suggestions.
Are you wanting to test these?
http://www.cooperindustries.com/content/public/en/power_systems/products/power-capacitors.html
Are you wanting to test these?
http://www.cooperindustries.com/content/public/en/power_systems/products/power-capacitors.html
- #6
wasvar2013
- 3
- 0
I'm sorry, is my negligence. Yes, it is about such power capacitor product testing.
http://www.cooperindustries.com/content/public/en/power_systems/products/power-capacitors.html
http://www.wascapacitor.com/products/power_film_capacitors/low_voltage_capacitor/2013/0601/170.html
http://www.cooperindustries.com/content/public/en/power_systems/products/power-capacitors.html
http://www.wascapacitor.com/products/power_film_capacitors/low_voltage_capacitor/2013/0601/170.html
- #7
Bobbywhy
Gold Member
- 1,734
- 52
wasvar2013, Thank you for saying the type of capacitor you are interested in testing. Looking at the "wascapacitor" link you posted I found one typical pdf datasheet that listed these tests for that series of capacitors:
"Film Capacitors – Power Factor Correction BKMJ Series Metallized Polypropylene Film Capacitors Cylindrical Type test:
※ Thermal stability test
※ Measurement of the tangent of the loss angle(tanδ) of the capacitor at elevated temperature
※ Measurement of the tangent(tanδ) of the loss angle of the capacitor
※ Voltage test between terminals
※ Voltage test between terminals and container
※ Capacitance measurement and capacity calculation
※ Test of internal discharge device
※ Thermal stability test
※ Discharge test
※ Self-healing test"
Now, will you please provide members here more information? What exactly is your intention? What specifically do you want to test? Is English you first language? Members here are always flexible and eager to assist people seeking information, but they cannot "read you mind with telepathy"! Thank you.
"Film Capacitors – Power Factor Correction BKMJ Series Metallized Polypropylene Film Capacitors Cylindrical Type test:
※ Thermal stability test
※ Measurement of the tangent of the loss angle(tanδ) of the capacitor at elevated temperature
※ Measurement of the tangent(tanδ) of the loss angle of the capacitor
※ Voltage test between terminals
※ Voltage test between terminals and container
※ Capacitance measurement and capacity calculation
※ Test of internal discharge device
※ Thermal stability test
※ Discharge test
※ Self-healing test"
Now, will you please provide members here more information? What exactly is your intention? What specifically do you want to test? Is English you first language? Members here are always flexible and eager to assist people seeking information, but they cannot "read you mind with telepathy"! Thank you.
- #8
Windadct
- 1,452
- 411
Do you mean capacitor manufacturing product testing? -- The test that the capacitor manufacturer can / will / should do to caps? -- If so - ideally this should be part of the initial product specification.
There are two phases - product design validation and then production tests. Your inquiry is too vague.
There are two phases - product design validation and then production tests. Your inquiry is too vague.