×
Follow Us
Results 1 to 3 of 3

Multi-tap CT with turns calculation

    #1
  1. dukeofsmooth is offline
    WAR EAGLE!
    Junior Member Pro Subscriber
    Join Date
    Sep 2016
    Location
    Allentown, PA
    Posts
    8
    Reputation

    Multi-tap CT with turns calculation

    Shown below is a current transformer with the number of turns between taps. In the space provided, write the calculated voltage for taps X1 to X3 when 200 V is applied to the full secondary winding (X1 to X5).

    Click image for larger version. 

Name:	coil.jpg 
Views:	171 
Size:	17.0 KB 
ID:	324

  2. #2
  3. Kalbi_Rob's Avatar
    Kalbi_Rob is offline Experienced Member Pro Subscriber
    Join Date
    Feb 2018
    Location
    Jacksonville, NC
    Posts
    290
    Reputation
    Quote Originally Posted by dukeofsmooth View Post
    Shown below is a current transformer with the number of turns between taps. In the space provided, write the calculated voltage for taps X1 to X3 when 200 V is applied to the full secondary winding (X1 to X5).

    Click image for larger version. 

Name:	coil.jpg 
Views:	171 
Size:	17.0 KB 
ID:	324
    So, you know the turns for X1-X5 is 100. We also know that the turns added together for X1-X3 is 30. Then we apply 200V to X1-X5 and read X1-X3.

    So. (100/200V)=(30/X) => X=(30*200V)/100 = 60V

    Simply put it is just a ratio of the turns you are measuring compared to the overall turns applied voltage.

    Here's a good pdf explanation on CT testing speaking about this specifically:
    CT Testing Basics.pdf

  4. #3
  5. ironshovel77 is offline Junior Member Pro Subscriber
    Join Date
    Jan 2015
    Posts
    8
    Reputation

    another way to calculate the ans

    another way to calculate
    find percent of coils 200v x 60%= 0.6 x 100=60v

Subscribe

Share this thread

Related Topics

  1. What is the turns ratio?
    By franko26 in forum NETA Level 2 Exam
    Replies: 23
    Last Post: February 14, 2022, 10:36 AM
  2. Saturation test of a 1500/5 multi-ratio CT
    By Tseppish in forum Electrical Testing Talk
    Replies: 11
    Last Post: August 4, 2021, 10:21 AM
  3. Harmonic Filter Resonant Frequency Calculation
    By ElectricalTestTech in forum NETA Level 4 Exam
    Replies: 4
    Last Post: June 14, 2020, 07:56 PM
  4. Motor output horsepower calculation
    By ecubed in forum NETA Level 3 Exam
    Replies: 2
    Last Post: November 5, 2019, 07:57 AM
  5. Open Delta Calculation
    By Kalbi_Rob in forum NETA Level 3 Exam
    Replies: 1
    Last Post: August 29, 2018, 01:32 PM

Tags for this Thread

Follow us


Explore TestGuy


NETA Certification Training


NICET Electrical Power Testing


Help and Support




You are viewing the archives. Enjoy new features and join the conversation at wiki.testguy.net