×
Follow Us
Results 1 to 5 of 5

Thermal imaging on overcurrent protective device

 Jump to latest post
    #1
  1. MortalSnacks is offline Junior Member Pro Subscriber
    Join Date
    Apr 2018
    Posts
    3
    Reputation

    Thermal imaging on overcurrent protective device

    2. Thermal imaging is used by what type of overcurrent protective device (OCPD)?

  2. #2
  3. Kalbi_Rob's Avatar
    Kalbi_Rob is offline Experienced Member Pro Subscriber
    Join Date
    Feb 2018
    Location
    Jacksonville, NC
    Posts
    283
    Reputation
    Quote Originally Posted by MortalSnacks View Post
    2. Thermal imaging is used by what type of overcurrent protective device (OCPD)?
    Thermal imaging is used by what type of overcurrent protective device (OCPD)?
    a. Thermal-Magnetic
    b. Oil dashpot
    c. Digital/microprocessor
    d. Air Dashpot

    Answer: C. Digital/microprocessor
    Digital and microprocessor-controlled OCPD employ thermal imaging to mimic thermal memory that is characteristic of thermal bi-metal breakers.

    Source: Winter 2013 NETAWORLD Quiz

  4. #3
  5. Join Date
    Dec 2018
    Location
    Atlanta, GA
    Posts
    27
    Reputation
    Quote Originally Posted by MortalSnacks View Post
    2. Thermal imaging is used by what type of overcurrent protective device (OCPD)?
    I guessed at this and got it right. I do thermal imagining and I know a microprocessor is needed to process the image.

  6. #4
  7. craiglamascus is offline Junior Member Pro Subscriber
    Join Date
    Apr 2022
    Posts
    1
    Reputation

    This Question/Answer do not make sense to me

    Quote Originally Posted by Kalbi_Rob View Post
    Thermal imaging is used by what type of overcurrent protective device (OCPD)?
    a. Thermal-Magnetic
    b. Oil dashpot
    c. Digital/microprocessor
    d. Air Dashpot

    Answer: C. Digital/microprocessor
    Digital and microprocessor-controlled OCPD employ thermal imaging to mimic thermal memory that is characteristic of thermal bi-metal breakers.

    Source: Winter 2013 NETAWORLD Quiz
    Can someone give me an example of an OCPD that uses thermal imaging? A manufacturer or part number?

    The answer seems to refer to a thermal model, not an image. Perhaps I just don't understand the wording.

  8. #5
  9. Kalbi_Rob's Avatar
    Kalbi_Rob is offline Experienced Member Pro Subscriber
    Join Date
    Feb 2018
    Location
    Jacksonville, NC
    Posts
    283
    Reputation
    Quote Originally Posted by craiglamascus View Post
    Can someone give me an example of an OCPD that uses thermal imaging? A manufacturer or part number?

    The answer seems to refer to a thermal model, not an image. Perhaps I just don't understand the wording.
    The function thermal imaging is not the same as say using a camera with thermal imaging. A couple of SqD functions utilizing Thermal Imaging to determine the cooling effect of the conductors:

    https://product-help.schneider-elect...unctions-6.htm

    https://product-help.schneider-elect...unctions-5.htm

    The control unit uses the calculation of a thermal image to evaluate the conductor heat rise and precisely monitor the thermal state of the conductors.

Subscribe

Login or register to leave a reply!


Share this thread

Related Topics

  1. IAC overcurrent relay, target and seal in coil
    By jflan13 in forum NETA Level 3 Exam
    Replies: 5
    Last Post: November 11, 2021, 09:23 PM
  2. Time Overcurrent Relay 51
    By jflan13 in forum NETA Level 3 Exam
    Replies: 5
    Last Post: December 6, 2019, 11:12 PM
  3. CL protective device cycles?
    By Havik21 in forum NETA Level 4 Exam
    Replies: 4
    Last Post: November 2, 2018, 12:36 PM
  4. Overcurrent protection
    By MartyCoyne in forum NETA Level 4 Exam
    Replies: 1
    Last Post: May 23, 2018, 01:24 PM
  5. Proper connection for overcurrent relay with parallel CT's
    By marvinray in forum NETA Level 4 Exam
    Replies: 12
    Last Post: October 21, 2017, 08:07 AM

Tags for this Thread

Follow us


Explore TestGuy


NETA Certification Training


NICET Electrical Power Testing


Help and Support