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Thermal imaging on overcurrent protective device

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  1. MortalSnacks is offline Junior Member Pro Subscriber
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    Thermal imaging on overcurrent protective device

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

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    Kalbi_Rob is offline Experienced Member Pro Subscriber
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    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

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    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.

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  7. craiglamascus is offline Junior Member Pro Subscriber
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    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.

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  9. Kalbi_Rob's Avatar
    Kalbi_Rob is offline Experienced Member Pro Subscriber
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    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.

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