Protection Engineering Basics and Schemes Protection Engineering | Page 87

equipped with inside short jumpers , means if you
remove test block cover the CT side should be shorted
automatically.
But here if you want to short your CT following operation
required
Metering CT
2, 5, 8 and 10 must be open and 1,4,7,9,and 14 must be
closed
Protection CT
10, 12, 14 and 16 will be open 11, 13, 15 and 18 must be
closed. So CT will be short with system earthing.
pg. 87