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Surge protection in industrial enclosures

M. Joshi
What are the requirements for determining whether surge protection should be installed in industrial enclosures?  The enclosures will typically have motor drives, emergency stop systems and sensors/data acquisition.


Are Type 2 & 3 surge protection modules commonplace?
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    Zoomup:
    Chapter 44 of B.S. 7671. Protection Against Voltage Disturbances.



    Probably doesn't apply to these industrial premises.

    In addition, the cable bursting strengths for multicore and cleated single cores requires to be within the design. I remember in a Scottish steelworks on 24 hour shifts when sleeping in a howff - (in an unused distribution transformer bay). During the early hours of a Sunday morning when there was no production; an armoured cable to the crutch of an 11kV distribution transformer blew out, it was completely vapourised with copper splatter on the brick wall. The 5 of us sleeping on nightshift made a beeline for the door and in the darkness. I never loitered around live transformers after that. Voltage regulation in the silent hours was probably the cause.  

    Jaymack    


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  • 0
    Zoomup:
    Chapter 44 of B.S. 7671. Protection Against Voltage Disturbances.



    Probably doesn't apply to these industrial premises.

    In addition, the cable bursting strengths for multicore and cleated single cores requires to be within the design. I remember in a Scottish steelworks on 24 hour shifts when sleeping in a howff - (in an unused distribution transformer bay). During the early hours of a Sunday morning when there was no production; an armoured cable to the crutch of an 11kV distribution transformer blew out, it was completely vapourised with copper splatter on the brick wall. The 5 of us sleeping on nightshift made a beeline for the door and in the darkness. I never loitered around live transformers after that. Voltage regulation in the silent hours was probably the cause.  

    Jaymack    


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