TPN isolator and switch

parin bumia
parin bumia
@parin-bumia-Gpllk0 • Oct 26, 2024

Where to use TPN switch and TPN Isolator,Moreover y to use it.I Have gr8 confusion regarding the realm of neutral wire.y is it so necessary.
Plz help.........

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  • J Biswas
    J Biswas

    @j-biswas-SBo0im • Jan 7, 2014

    TP - 3P switching no N

    TPN - 3P switching with un-protective N (no problem unless the motor winding body to the metal) 😀 - other machines/electronic devices (grounded might get affected otherwise)

    TPNY - Many factories / countries don't allow TPN because of the above reason. Hence independent switching of N is done along with isolation with ground.

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  • J Biswas
    J Biswas

    @j-biswas-SBo0im • Jan 7, 2014

    We are in the process of designing a system that alarms whenever neutral line is grounded (for 3P motors), work is still in progress.

    - JB -

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