Potential transformers

Posted On February 17, 2018 at 12:04 pm by / 31 Comments

1 Design Standard IEC 60076
2 Type Three Phase Wound Core/Stack Core
3 Installation Outdoor, Tropical, High Rainfall & Humidity
4 Winding Material High Conductivity Copper
5 Core Type and Material CRGO Silicon Steel
6 Nominal Voltage HT = 11000 V t0 33000 V & LT = 415 V
7 Rated Frequency 50 Hz
8 BIL (Basic Insulation Level) HT Winding = 75 KV, LT Winding = 2.5 KV
9 Power Frequency Withstand Voltage HT Winding = 28 KV, LT Winding = 2.5 KV
10 Vector Group DYn 11
11 Cooling Method ONAN
12 Maximum Temperature Rise at Full Load & at Rated tap position:

  • Winding
  • Insulating Oil
  • Shall not exceed 65° C (Resistance Method)
  • Shall not exceed 60° C (Thermometer Method)
13 Tap Changer Off Load type; +1 x 2.5%, 0, -3 x 2.5% of rated voltage
14 Bushing:

  • Type & Material
  • Connectors
  • Quantity
  • Mounting Position
  • Outdoor type, Porcelain as per IEC 60137
  • Bolted ring type
  • HT = 3, LT = 4
  • HT – On the tank cover, LT – On the side of the tank
15 Tank:

  • Design
  • Ground Provision
  • Lifting Facilities
  • Conservator
  • Breather
  • Painting
  • Bolted type complete with cover and gasket
  • with bolted ring type connector
  • Provided with Facilities for lifting the core and coil
  • Provided
  • Silica Gel Breather
  • Light Gray, ANSI Color # 70
16 Insulating Oil New, Unused, Mineral oil as per IEC 60296 & BS 148

31 thoughts on “Potential transformers

  1. I do trust all the concepts you’ve offered to your
    post. They are really convincing and will definitely work.
    Still, the posts are too quick for beginners. May just you please
    lengthen them a bit from next time? Thanks for the post.

  2. After going over a number of the blog articles on your website,
    I truly like your technique of writing a blog. I added it to my bookmark site list
    and will be checking back in the near future.
    Please check out my web site too and tell me what you think.

  3. Today, while I was at work, my sister stole my iPad and tested
    to see if it can survive a 30 foot drop, just so she can be a youtube sensation. My apple ipad
    is now broken and she has 83 views. I know this is totally off topic but I
    had to share it with someone!

  4. Hi just wanted to give you a quick heads up and let you know a few of the
    pictures aren’t loading properly. I’m not sure why but I think its a linking issue.

    I’ve tried it in two different browsers and both show the
    same results.

  5. This design is steller! You obviously know how to keep a reader entertained.
    Between your wit and your videos, I was almost moved to start my
    own blog (well, almost…HaHa!) Excellent job.

    I really loved what you had to say, and more than that,
    how you presented it. Too cool!

  6. Do you mind if I quote a few of your posts as long as I provide
    credit and sources back to your webpage?
    My website is in the exact same area of interest as yours and my visitors would definitely benefit from some of the information you provide here.
    Please let me know if this ok with you. Cheers!

  7. Heya! I’m at work surfing around your blog from my new apple iphone!
    Just wanted to say I love reading through your blog and look forward to all your posts!

    Carry on the outstanding work!

  8. We stumbled over here different web address and thought I should check things out.
    I like what I see so now i’m following you.
    Look forward to looking at your web page again.

  9. Amazing things here. I am very satisfied to
    peer your article. Thank you so much and I
    am taking a look ahead to touch you. Will you please drop me a mail?

  10. Tremendous issues here. I am very happy to look your article.
    Thanks so much and I’m having a look ahead to touch you. Will you kindly drop me a e-mail?

  11. Howdy, i read your blog from time to time and i own a
    similar one and i was just curious if you get a lot of spam
    remarks? If so how do you protect against it, any plugin or
    anything you can advise? I get so much lately it’s driving me insane so any support
    is very much appreciated.

  12. fantastic post, very informative. I wonder why the other specialists of this sector
    do not realize this. You must continue your writing.
    I am sure, you’ve a huge readers’ base already!

  13. Does your blog have a contact page? I’m having problems
    locating it but, I’d like to send you an email.
    I’ve got some suggestions for your blog you might be interested in hearing.
    Either way, great website and I look forward to
    seeing it grow over time.

Leave a Reply