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Discuss CT connection for T/F differential protection in the Commercial Electrical Advice area at ElectriciansForums.net

S

speedtronic

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Why CTs are connected in star on T/F delta connected winding side & in delta on T/F star connected winding side for T/F differential protection?
 
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S

Spudmiester

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  • #2
Dont know, its a while since I had anything to do with big trannys. Well........ not since I was last in Blackpool anyway !:eek:
 
S

SimonCTS

  • Thread Starter Thread Starter
  • #3
Going for a stab in the dark here.......as i haven`t yet had to deal with these,

An uneducated guess would be the star first for the intial current (spike) and the delta should stop the differentials in the phases, but i am no were near shure of the sh*t i so calmly talk about

Would be interested to know other educated opinions on it
 
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