Platinium heat resistor of 8-shape laying wire

Abstract

This invention relates to an embedded Pt thermal resistor wired in 8-shape used in a resistance thermometer for testing the temperature of the coil or the core of a motor including Pt wires and a carrier, in which, said carrier is a plate-type bracket, two circular slots are opened on it to surround two same inside tracks, the Pt wire is laid around the slot in a 8-shape and an insulating layer is set at the cross exchange place of the Pt wires between the two slots. When a Pt thermo-resistor is embedded in the core slot, the alternating leakage-flux in the slot will turn the interference voltage induced at the lead end of the resistor to drop to zero so as to ensure the normal operation of the resistor.

Description

Technical field [0001] The invention relates to a platinum thermal resistance with "8"-shaped cloth wire, which relates to an embedded platinum thermal resistance for a motor, which is a resistance thermometer used in a motor iron core slot to detect the temperature of a motor coil or iron core. Background technique [0002] Motors are already one of the most commonly used power sources in our country, and various types of motors are found in various industries. Large and medium-sized motors are mostly used in important machinery. The reliability of motor operation is the most concerned issue by users. It is the first-class requirement of the operating unit to know the temperature of the motor in time. Therefore, when manufacturing a motor, it is necessary to embed a platinum thermal resistance in the motor core slot, so as to know the temperature of the motor in time and accurately. [0003] The important part of the embedded platinum thermal resistance is the specially ...

AI Technical Summary

Problems solved by technology

Because the leakage magnetic flux will induce a large interference voltage at both ends of the lead wire of the platinum thermal resistance, so that the platinum thermal resistance cannot be used normally.

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