Current transformer capable of being started outdoors

Abstract

The invention relates to a current transformer capable of being started outdoors. The current transformer capable of being started outdoors comprises an upper semicircular iron core, a lower semicircular iron core, an upper outdoor semicircular resin shell and a lower outdoor semicircular resin shell, wherein a metal magnetism-conducting powder adhesive layer is arranged between the contact surface of the upper semicircular iron core and the contact surface of the lower semicircular iron core. According to the current transformer capable of being started outdoors, the metal magnetism-conducting powder adhesive layer is arranged between the contact surface of the upper semicircular iron core and the contact surface of the lower semicircular iron core, the upper semicircular iron core and the lower semicircular iron core are sealed through the upper outdoor semicircular resin shell and the lower outdoor semicircular resin shell, a wire to be tested penetrates through semicircular elastic rings on a central hole defined by the upper outdoor semicircular resin shell and lower outdoor semicircular resin shell in a connected and fixed mode, and then stable and high-precision use of the current transformer is achieved. The current transformer capable of being started outdoors is simple in structure, fast in installation, small in amount of leakage flux, high in measurement precision, good in partial discharging performance, resistant to aging, safe to use, and long in service life.

Description

technical field [0001] The invention relates to a current transformer, in particular to an outdoor open current transformer for measurement and microcomputer protection. [0002] Background technique [0003] The existing outdoor open-type current transformer does not need to cut off the line, and fastens the two separate ferromagnetic cores into the line, but because of the separate ferromagnetic cores, there is still an air gap between them after fastening, and the magnetic flux leakage increases Thus affecting the measurement accuracy of the transformer. In addition, the current outdoor open-type current transformer uses a layer of sheath on the outside for protection. When used in a long-term harsh environment, the sheath is easy to age and does not belong to the same material as the appearance of the transformer, which affects the safety and security of the transformer. Life expectancy and potential safety hazards. [0004] Contents of the invention [0005] I...

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Problems solved by technology

[0003] The existing outdoor open-type current transformer does not need to cut off the line, and fastens the two separate ferromagnetic cores into the line, but because of the separate ferromagnetic cores, there is still an air gap between them after fastening, and the magnetic flux leakage increases Thus affecting the measurement accuracy of the transformer

In addition, the current outdoor open-type current transformer uses a layer of sheath on the outside for protection. When used in a long-term harsh environment, the sheath is easy to age and does not belong to the same material as the appearance of the transformer, which affects the safety and security of the transformer. Life expectancy, potential safety hazard

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