Electrical shunt reactor coil

Details Electrical shunt reactor coil Electrical shunt reactor coil

1982-11-29

1984-11-27

Pellinen, A. D.

Inductor devices

With electric and/or magnetic shielding means

336 84R, 336212, 336214, 336215, H01F 2724

Patent

active

044853688

ABSTRACT:
An electrical shunt reactor coil comprises a rectangular magnetic frame in the form of two vertical members (1,2) interconnected at their ends by two horizontal yoke members (3,4). The frame members are constituted by respective stacks of magnetic laminations. A central core (7) extends across the middle of the frame parallel to the vertical members, and an electrical winding (6) is situated around the core. The horizontal yoke members are of width L which is less than the diameter of the winding and which is close or equal to the diameter of the central core. Magnetic shunts (20 to 23) are placed across the outside of the horizontal yoke members. The shunts are longer than the width L of the yoke members so that they overhang both sides thereof. The magnetic shunts are constituted by respective stacks of laminations extending parallel to the axis of the central core and at right angles to the laminations of the yoke members. The improvement lies in the magnetic shunts having the shape of a rectilinear rectangular parallelipipeds without tip members that extend towards the winding, thereby leaving a wide air gap at the ends of the winding. This helps to avoid hot spots and keeps the shunts out of the way of leads to the winding.

REFERENCES:
patent: 3195082 (1965-07-01), Wetherill et al.
patent: 3195087 (1965-07-01), Welch

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