×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

how to check the capacitor value

how to check the capacitor value

how to check the capacitor value

(OP)
WE HAVE CAPACITOR BANKS FOR SVC ( STATIC VAR COMPENSATOR )AND USING THE CAPACITORS BANK IN 100HZ,150HZ,200 HZ, 250 HZ FILTER. CAPACITORS ARE SERIES PARALLEL CONNECTED.. ALL CAPACITORS CONNECTED TO 33 KV NETWORK, BUT HOW TO CHECK THE CAPACITORS IF ANY FILTER UNBALANCE WHILE CAPACITOR CONNECTING, IS THERE ANY METHOD TO CHECK CAPACITANCE VALUE OF TOTAL CAPACITORS OF INDIVIDUAL PHASE CONNECTED, BECAUSE IT IS VERY DIFFICULT TO CHECK EACH AND EVERY CAPACITOR OF BANK AND TIME TAKING JOB. THANK U

RE: how to check the capacitor value

Try to avoid all capital letters. That will make your posts more readable. It might even increase the possibility to get an answer.

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

RE: how to check the capacitor value

Do you want to check the banks in operation? I think that you shall forget about that if you don't have separate CTs and VTs installed for each filter and capacitor bank.

If you can deenergise the filters, then it will be a lot easier. You can check the capacitance values easily by applying a suitable voltage, 400 or 480 V at 50 or 60 Hz and measure voltage across and current through every capacitor section. Then calculate C=I/(6.28*f*U)

You do not need to separate the different filter sections from each other, which I have seen people doing, because you measure U and I for each capacitor section and can ignore what is going on in other parts of the filter.

One thing that you may have to be careful with is if you have a harmonics-rich voltage. Then it may be necessary to measure the fundamental U and I using a spectrum analyser or selective voltmeter and current meter. Otherwise you may get the wrong values.

Gunnar Englund
www.gke.org
--------------------------------------
100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources