Power supply isolation transformer of bow net detecting system

Abstract

The invention relates to a power supply isolation transformer of a bow net detecting system, which comprises an iron core, high-voltage windings, low voltage windings, a high-voltage output terminal, a low-voltage input terminal, and a high-voltage auxiliary terminal, and is characterized in that the low voltage windings are uniformly and symmetrically distributed on the rectangular or ring-shaped high magnetic permeability iron core, the high-voltage windings circle the outer circumferences of the low voltage windings, and the plane surface on which the high-voltage windings are located is mutually perpendicular to the plane surface on which the low voltage windings are located so as to form a chain type electromagnetic coupling structure. The power supply isolation transformer of the bow net detecting system is characterized in that the short circuit resisting capability is strong, the voltage output accuracy is high, the electric insulation performance is excellent, the high and low temperature characteristics are stable, influences caused by externally applied harmonic waves and excess voltage on the high voltage side can be born, a fusing protection device on the low voltage side is prevented from accidents of transformer overburn or explosion and the like even under the conditions of wiring errors or long term overload, the stable property of product is reliable, maintenance is avoided, manual labor cost is saved, and the power supply isolation transformer is classified as reliable power supply equipment of the bow net detecting system.

Description

technical field [0001] The invention relates to a transformer for isolating high voltage and transforming voltage, in particular to a power supply isolation transformer for a pantograph-catenary detection system. Background technique [0002] When the electric locomotive is running, the pantograph-catenary detection system needs to conduct full-time online detection of the operation matching relationship between the pantograph and the catenary, so as to provide reliable digital basis for the safe operation of the electric locomotive and the improvement of operating speed. At present, most of the power supply isolation transformers for the pantograph-catenary detection system of electric locomotives, the high-voltage and low-voltage windings adopt the principle of concentric shaft electromagnetic coupling, that is, the low-voltage windings are concentrated on a frame of the rectangular permeable core. The high-voltage winding is wound on the outer circumference of the low-vol...

AI Technical Summary

Problems solved by technology

The internal impedance of the isolation transformer with this structure is relatively small, the selection of wires is not strictly limited, and the ability to resist external short-circuit is poor. When the external line is short-circuited, it is easy to burn the isolation transformer, and the reliability of power supply cannot be guaranteed.

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