GE MOTOR MANAGER 2 - Page 211

GE Power Management
MM2 Motor Manager 2 E-3
APPENDIX E E.1 CT ISOLATION
E
A curve with a knee at 100 V for example could drive a total burden of:
Evaluation of CT performance is best determined from the excitation curves. They present the com-
plete story and eliminate any guess work. Most CT manufacturers will provide excitation curves upon
request.
Figure E–2: EXCITATION CURVES METHOD
100 V
20 5 A
×
----------------------
1
Ω
=