NG TGN(E) 213
Technical Guidance Notes - Isolator Don’t Believe Indication (DBI) Condition on Numeric Busbar Protection
|Publication Date:||1 December 2005|
PURPOSE AND SCOPE
The purpose of this document is to describe the behaviour of REB 500, 7SS522 & DRS BB numeric busbar protections when the isolator DBI condition occurs. The report also gives guidance as to what needs to be done following the DBI occurrence.