Low-cost Rogowski coil sensors

摘要

In various embodiments, a low-cost Rogowski coil sensor including a coil wound around a flexible carrier is provided with a reliable parallel-entry closure mechanism.

主权项

1. A Rogowski coil sensor comprising:
a flexible carrier comprising a first end and a second end; a Rogowski conductive wiring arrangement comprising a coil disposed around the carrier and a return-path conductor such that an axis of the coil is parallel to an axis of the carrier; and located at the first end of the carrier, a combined unit comprising at least two spaced apart walls, the combined unit configured to: (i) slidably receive the second end of the carrier through an opening defined at least in part by the at least two walls, the opening extending along a longitudinal axis; and (ii) fasten the first end to the second end so as to lock the sensor into a closed-loop configuration, wherein, in the closed-loop configuration, the at least two walls of the combined unit overlap at least a portion of the coil along the axis of the coil, the longitudinal axis of the opening of the combined unit is generally parallel to the axis of the coil, the first end of the flexible carrier is offset from the second end of the carrier along a direction transverse to the longitudinal axis of the opening, and a free end of the coil is flush with a terminated end of the coil in a plane perpendicular to the axis of the coil.