This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

TNCS Condition

f51b9c4342acb17854276ea4c05938ae-huge-7ffcd357-6382-406d-ba19-012100635c9e.jpg

Perhaps you can shed some light on this condition for TNCS systems in the Irish Rules. I can only see that as RE decreases RB becomes more onerous but to be honest I am not really getting the essence.
Parents

  • lyledunn:

    Thank you AJ, that makes sense. There must be some sort of guidance for the DSO in order to establish RE or perhaps a deemed to satisfy provision. If RE was one ohm, for example, then RB would need to be no more than 50/160 ohms when Uo is 230v. 




    Oops!! That should be 50/180 ohms when Uo is 230v. This is a DSO condition so I don’t think RE should be made the subject of the inequation.  

     

Reply

  • lyledunn:

    Thank you AJ, that makes sense. There must be some sort of guidance for the DSO in order to establish RE or perhaps a deemed to satisfy provision. If RE was one ohm, for example, then RB would need to be no more than 50/160 ohms when Uo is 230v. 




    Oops!! That should be 50/180 ohms when Uo is 230v. This is a DSO condition so I don’t think RE should be made the subject of the inequation.  

     

Children
No Data