Electrical conductors
AssigneeElectronic Techniques (Anglia) Limited
InventorKevin McGrane
Life of this patent
Estimating the term…
Abstract
Electrical isolation which is required between adjacent windings of a device such as a transformer is provided by wrapping a group of individually insulated conductive cores 62, 64, 66, 68 with multiple turns of a thin tape 32. Use of a thin tape rather than solid insulation provides a long creepage path from the cores 62, 64, 66, 68 to adjacent components. The invention can also be applied to components other than transformers.
Claims24
An insulated electrical conductor comprising a plurality of separate conductive cores, each core being marked so as to be distinguishable from other cores, each core having an enameled covering to insulate it from neighboring cores, the cores being combined to form a multi-core elongate conductor which is covered by insulation tape wound in a helical path around the cores and which forms a common external insulating layer for the conductor.
An electric coil device wound, at least in part, with an insulated electrical conductor comprising a plurality of separate and distinguishable conductive cores, each core having an enamelled covering to insulate it from neighbouring cores, the cores being combined to form a multi-core elongate conductor which is covered by insulation tape wound in a helical path around the cores and which forms a common external insulating layer for the conductor.
A method of optimizing the ratio of primary inductance to leakage inductance (L.sub.p /.DELTA.L) of a transformer, wherein at least one of the transformer windings is formed by an insulated electrical conductor comprising a plurality of separate and distinguishable conductive cores, each core having an enamelled covering to insulate it from neighbouring cores, the cores being combined to form a multi-core elongate conductor which is covered by insulation tape wound in a helical path around the cores and which forms a common external insulating layer for the conductor, the primary and secondary windings are wound in the same winding space on a transformer core, and the turns of the two windings are intermingled to produce a desired primary inductance to leakage inductance ratio.
Dependencies are inferred from the claim text.