Protection Engineering Basics and Schemes Protection Engineering | Page 32

1.1.11.3 Core balance CT (CBCT):
This type of CT is more applicable where Earth metering
or protection from earth fault is required.
We will see with Earth fault indicators circuit or with Earth
Fault protection Relay, CT is mounted on Cables usually.
In this #4 item is CBCT.
Remember in any balance electrical power system
pg. 32