An anti-stealing device

Abstract

The invention provides an electricity larceny prevention device used for a low-voltage straight through current transformer. The electricity larceny prevention device comprises a plurality of anti-theft plates and a retractable insulating sleeve, wherein the anti-theft plates are arranged on a shell of the low-voltage straight through current transformer and cover the end openings of the two sides of a straight through hole of the shell, wire passing holes allowing a primary side wire to penetrate through are formed in the anti-theft plates, and the retractable insulating sleeve is arranged in the wire passing holes and used for blocking the gap between the wire passing holes and the primary side wire penetrating through the wire passing holes. According to the electricity larceny prevention device, the anti-theft plates and the insulating sleeve are arranged, and therefore the gap between the primary side wire and the straight through hole is eliminated, a user can not install a short circuit ring between the primary side wire and the straight through hole any more, the electricity larceny prevention effect is achieved, and economic losses of a power supply company are avoided.

Description

Technical field [0001] The invention relates to the technical field of electrical equipment, and more specifically, to an anti-theft device applied to a low-voltage through-core current transformer. Background technique [0002] Current transformers are electrical equipment often used in the electrical field, and their main functions are current conversion and electrical isolation. The low-voltage through-type current transformer in the current transformer is widely used because of its advantages such as convenient use and installation, simple manufacturing process and low production cost. [0003] The low-voltage through-core current transformer mainly includes a toroidal core wound with a coil and a toroidal shell wrapped outside the toroidal core. The toroidal core with a coil is used as a secondary winding, and the two ends of the coil are two At the secondary outlet end, when the charged primary wire passes through the through hole in the middle of the annular casing, a curre...

AI Technical Summary

Problems solved by technology

[0005] However, this technical specification does not clearly stipulate the anti-theft technology on the primary side of the low-voltage through-hole current transformer, and because there is a gap between the through-hole of the ring shell and the primary-side wire passing through the through-hole , and the sealing design without lead seal, the user can steal electricity by adding a short-circuit ring on the through-hole, and it is not easy for the power supply company to find out when adding and removing the short-circuit ring, and it can not damage the lead seal on the secondary side Stealing electricity is realized under the premise. As long as the short-circuit ring is added and released regularly, the supervision of the power supply company can be easily avoided, and electricity theft without leaving traces will be realized, which will bring difficulties to the investigation and handling of evidence of electricity theft and cause economic losses for the power supply company.

Images