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Rope CT Positioning Guide

Rope CTs should be installed properly to reduce the maximum error based on positioning. Ideally the conductor being monitored will be perpendicular to the rope CT loop, and pass through the center of the rope CT as shown below in position 1. Tie-wraps or other non-conductive fasteners can be used to center the rope CT around the conductor. The percentages listed below are the expected maximum errors that will be introduced in addition to the base rope accuracy.


Position Number Position Description Error
1 Centered < 0.4%
2, 3, 4 Near outer edge < 2.0%
5 Near connector < 4.0%


Conductor through center of rope CT (ideal placement)


Conductor touching points 4 and 2 (less than ideal placement)