Alternating current and direct current sensor

Abstract

The invention discloses an alternating current and direct current sensor comprising a magnetism collecting ring; a magnetic field detection module is connected to the circle of the magnetism collecting ring; the output end of the magnetism collecting ring is connected to the input end of the magnetic field detection module; the sensor further comprises a circuit module comprising an analog circuitand a digital circuit; the output end of the magnetic field detection module is connected to the input end of the analog circuit; the output end of the analog circuit is connected to the input end ofthe digital circuit; the magnetism collecting ring further comprises a first opening and closing part; and the magnetism collecting ring is opened or closed through the first opening and closing part. According to the alternating current and direct current sensor, electrified detection can be performed on power devices; the current change of the microampere level can be accurately detected; and universality to the power devices with alternating current and direct current is realized.

Description

technical field [0001] The invention relates to the technical field of current sensors, in particular to an AC and DC current sensor. Background technique [0002] In the process of manufacturing, transporting and overhauling power equipment, there are often latent defects left due to unexpected accidents, and in the long-term operation of power equipment, such defects are affected by voltage, current, mechanical damage, environmental influence and chemical Corrosion, etc., may aggravate the level of defects and form defects that affect the safe operation of power equipment, such as concentrated defects such as insulation damp, insulation mechanical damage, insulation internal bubbles, and porcelain cracks. of danger. The existence of these defects seriously threatens the safe operation of the power system. Generally speaking, if such defects can be found and eliminated in the early stage of germination, further damage to power equipment can be avoided. [0003] At present...

AI Technical Summary

Problems solved by technology

However, due to the problem of the sensor wiring method of the sensor, although the offline detection method is accurate, it cannot be directly applied to the on-site live detection. Early latent defect testing requirements of equipment, and cannot be widely applied to AC and DC power equipment

Images