US 12,283,410 B2 · Compact outdoor open-close type current transformer

Abstract

The invention discloses a compact outdoor open-close type current transformer which comprises a transformer shell formed by butt joint of an upper half housing and a lower half housing, wherein an upper half hollow framework and a lower half hollow framework are arranged in the transformer shell, an upper half iron core is arranged in the upper half hollow framework, a lower half iron core is arranged in the lower half hollow framework, and a spring jacking piece is arranged between the upper half hollow framework and the upper half iron core; a winding wire is arranged on the lower half hollow framework, a framework baffle and a sealing gasket connected to the framework baffle are arranged at the butt joint of the upper half hollow framework and the lower half hollow framework, and the framework baffle and the sealing gasket after being connected are respectively and correspondingly embedded in a guide positioning groove arranged in the upper half housing and the lower half housing; and inner spaces of the upper half housing and the lower half housing are filled with epoxy resin, a pair of lug hole plates, and a pressing plate and bolts for connecting the lug hole plates are arranged on the transformer shell. According to the invention, the fixing reliability between a cable and the transformer is improved, and screws can be prevented from falling off during high-altitude operation.

Claims12

Dependent claims

A compact outdoor open-close type current transformer comprising:

a transformer shell including a semi-annular upper half housing and a semi-annular lower half housing opposing and secured to the upper half housing, each half housing including an arcuate inner wall and an arcuate outer wall, a first space between the inner wall and the outer wall of the upper half housing defining a first semi-annular space, and a second space between the inner wall and the outer wall of the lower half housing defining a second semi-annular space, the first and second semi-annular spaces together defining an annular space formed from an annular space having a circular outer periphery and a circular inner periphery, the inner periphery having a center which is eccentric with respect to a center of the outer periphery and is located inside the upper half housing;
a semi-annular upper half framework disposed in the semi-annular space of the upper half housing, and a semi-annular lower half framework disposed in the semi-annular space of the lower half housing and opposing the upper half framework;
a semi-annular upper iron core disposed in the upper framework and a semi-annular lower iron core disposed in the lower framework and opposing the upper iron core;
and
a winding wire wrapped around the lower framework.

2 more elements

Dependencies are inferred from the claim text.

Compact outdoor open-close type current transformer

Life of this patent

Compact outdoor open-close type current transformer

Life of this patent

Abstract

Claims12