×
Follow Us
Results 1 to 4 of 4

What gas would indicate partial discharge in oil?

 Jump to latest post
    #1
  1. Join Date
    Mar 2015
    Posts
    6
    Reputation

    What gas would indicate partial discharge in oil?

    Quote Originally Posted by ddd675 View Post
    10. In insulating oil, what gas would indicate partial discharge in the oil?
    "PARTIAL DISCHARGE is a fault of low level energy which usually occurs in gas-filled voids surrounded by oil impregnated material.
    The main cause of decomposition in partial discharges is ionic bombardment of the oil molecules.

    The major gas produced is Hydrogen. The minor gas produced is Methane."

    source - http://www.satcs.co.za/Transformer_Oil_Analysis.pdf

  2. #2
  3. Join Date
    Apr 2017
    Posts
    1
    Reputation
    Quote Originally Posted by tallyson71 View Post
    "PARTIAL DISCHARGE is a fault of low level energy which usually occurs in gas-filled voids surrounded by oil impregnated material.
    The main cause of decomposition in partial discharges is ionic bombardment of the oil molecules.

    The major gas produced is Hydrogen. The minor gas produced is Methane."

    source - http://www.satcs.co.za/Transformer_Oil_Analysis.pdf
    Looking at different references, it would appear that both Acetylene or Hydrogen are indicators of partial discharge.

    source -http://www.netaworld.org/sites/default/files/public/neta-journals/NWwtr09_Hamrick.pdf

  4. #3
  5. SecondGen's Avatar
    SecondGen is offline
    I push buttons.
    NETA Level III Pro Subscriber
    Join Date
    Jan 2014
    Location
    United States
    Posts
    440
    Reputation
    Quote Originally Posted by ddd675 View Post
    10. In insulating oil, what gas would indicate partial discharge in the oil?
    Hydrogen or Acetylene
    Edit: It's methane.

    Last edited by SecondGen; July 27, 2017 at 10:27 AM.

  6. #4
  7. Join Date
    Dec 2014
    Location
    Houston, TX
    Posts
    11
    Reputation
    Quote Originally Posted by SecondGen View Post
    Hydrogen or Acetylene

    It is methane, refer to Duval's triangle.

Subscribe

Login or register to leave a reply!


Share this thread

Related Topics

  1. Safely discharge HV feeder using load break disconnect switch (procedure)
    By SecondGen in forum Safety and Arc Flash Talk
    Replies: 3
    Last Post: August 17, 2020, 01:08 PM
  2. Tan Delta versus Partial Discharge testing on cables
    By TaifaEngineering in forum Electrical Testing Talk
    Replies: 3
    Last Post: January 13, 2020, 04:08 PM
  3. Minimum discharge time at end of cable test
    By Cldpmu in forum NETA Level 2 Exam
    Replies: 3
    Last Post: December 21, 2018, 10:08 PM
  4. Partial Discharge Data Interpretation
    By ies0900012 in forum Electrical Testing Talk
    Replies: 2
    Last Post: July 21, 2016, 06:27 PM

Tags for this Thread



Related Content


Follow us


Explore TestGuy


NETA Certification Training


NICET Electrical Power Testing


Help and Support