GE Multilin 469 Instruction Manual page 314

A.3.2 Ground Fault CTs for 5 A Secondary CT
A.3.3 Phase CTs
A–8
For low resistance or solidly grounded systems, a 5 A secondary CT should be used. Two
sizes are available with 5½" or 13" × 16" windows. Various Primary amp CTs can be chosen
(50 to 250).
Current transformers in most common ratios from 50:5 to 1000:5 are available for use as
phase current inputs with motor protection relays. These come with mounting hardware
and are also available with 1 A secondaries. Voltage class: 600 V BIL 10 kV.
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
A: APPENDIX
808709A1.CDR