US 6,178,617 B2 · Method of assembling a modular current transformer

Abstract

A method for assembling a modular current transformer (17) includes providing a first bobbin (40A) having a first aperture (32A) disposed therein and a second bobbin (40B) having a second aperture (32B) disposed therein. The first axial aperture (32A) is aligned with the second axial aperture (32B), and a xontinuous wire (21) is wrapped sround the first bobbin (40A) in a first direction. With the first and second axial apertures (32A, 32B) still aligned, the continuous wire (21) is then wrapped around the second bobbin (40B) in a second direction opposite the first direction. The first bobbin (40A) is then inverted by pivoting the first bobbin (40A) about a flexible tab (33) that connects the first and second bobbins (40A, 40B). A transformer core (22) is then disposed through the first and second axial apertures (32A, 32B). The windings on the first and second bobbins (32A, 32B) form the secondary windings (20A, 20B) for the current transformer (17).

Claims6

Dependent claims

A method of forming a current transformer, said method comprising:

providing a first bobbin including a first axial aperture disposed therein,
providing a second bobbin including a second axial aperture disposed therein;
aligning said first axial aperture with said second axial aperture;
wrapping a continuous wire on said first bobbin in a first direction to form a first secondary winding;
wrapping said continuous wire on said second bobbin in a second direction opposite said first direction to form a second secondary winding;
inverting said first bobbin;
and disposing a transformer core through said first and second axial apertures.

4 more elements

Dependencies are inferred from the claim text.

Method of assembling a modular current transformer

Life of this patent

Method of assembling a modular current transformer

Life of this patent

Abstract

Claims6