GE Power Management
489 Generator Management Relay D-1
APPENDIX D D.1 CURRENT TRANSFORMERS
D
APPENDIX D CTsD.1 CURRENT TRANSFORMERS D.1.1 GROUND FAULT CTs FOR 50:0.025 A CT
CTs that are specially designed to match the ground fault input of GE Power Management motor protection relays should
be used to ensure correct performance. These CTs have a 50:0.025A (2000:1 ratio) and can sense low leakage currents
over the relay setting range with minimum error. Three sizes are available with 3½", 5½", or 8" diameter windows.
HGF3 / HGF5
DIMENSIONS
HGF8
DIMENSIONS
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