Protection Engineering Basics and Schemes Protection Engineering | Page 19

 Step up transformer (when we have CT with 1A
secondary output)
1.1.8 Circuit Diagram of Excitation /Magnetization
Test
1.1.6.1 Method:
 1 st of all put off breaker
 Then remove test block cover, never ever remove
cover when circuit alive, because it put CT secondary
in open condition , which induce high voltage
between both contacts and contact to earth , and if
pg. 19