Current transformer picture
Current transformer CURRENT TRANSFORMER IS USED IN MEETERING,PROTECTION PURPOSE.IT STEP DOWN THE VALUE OF CURRENT WITH RESPECT HIGH CURRENT FLOWING THROUGH LINE.WHEN A FAULT OCCURE IN THE LINE CURRENT TRANSFORMER COMPAIR THE VALUE OF ITS SECONDARY CURRENT SETTING VALUE THAT IS 1 OR 5 AMP,THEN EXTRA HIGH VALUE CURRENT FLOWING TO THE RELAY AND RELAY CONTACT CLOSED THEREFORE TRIP THE LINE.