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High Voltage Riddle No.6 - Open Delta Secondary windings in Voltage Transformers
The Main voltage  Transformer associated with the High Voltage system  is not provided with a broken delta secondary windings to polarise the directional Earth fault relay.  It is permissible to use three single phase interposing voltage transformers. Why ?
Author : soman - From: India
 
#1
Tue, February 26th, 2013 - 16:00
Generally it is possible; you just should care for additional error due to new interface device which is not important in this case. 
Author : Hamid - From: Iran
 
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