High-voltage demarcation vacuum circuit breaker on outdoor column

Abstract

The invention relates to an outdoor post-mounted high-voltage boundary vacuum circuit breaker. Its main technical features are: three phases and three insulators are solid right-angle structures, and both ends of the right-angle crank arms have semi-long circular hole gaps. With a current transformer phase, the upper semi-cylindrical surface of the root of the cantilever cylinder on the side wall of the horizontal space is connected to the upper semi-circular inner surface of the oblong hole of the iron core of the current transformer, and the redundant space at the lower part of the oblong hole of the iron core is wound with the secondary winding. The end of the conductor on the middle phase end cover of the non-cantilever part passes through the through hole of the zero-sequence current transformer, and the conductors on the phase end covers on both sides are tightly connected to the phase conductors on both sides of the zero-sequence current transformer. It solves the problems of large volume, heavy weight and inconvenient installation and use of overhead lines in the existing technology, solves the problem of two-way straightening drive of the crank arm, and meets the requirements of the power grid for product miniaturization and intelligent environmental protection.

Description

technical field [0001] The invention relates to a high-voltage circuit breaker on an outdoor pole, in particular to a high-voltage boundary vacuum circuit breaker on an outdoor pole. Background technique [0002] my country's 12kV overhead lines are erected in the open air, with a wide line length and complex structure. Most of them are "T" connected to multiple branch lines. Due to the complicated geographical conditions of the corridors along the overhead lines, the lack of management of user property power facilities, and the aging of line and equipment insulation Seriously, a large number of single-phase ground faults are often caused by high temperature or wind and rain and human factors. When single-phase grounding occurs in the line, due to the difficulty in finding the fault point, the fault will expand. A partial fault in a branch line or a user will cause a power outage on the entire 12kV distribution line, which will not only affect the lives of residents and the p...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problems existing in the above-mentioned technologies, and provide a high-voltage demarcation vacuum circuit breaker on outdoor poles, which solves the problems of large box body, heavy weight, and environmental pollution of the high-voltage demarcation vacuum circuit breaker on outdoor poles; The overall structure of the high-voltage boundary vacuum circuit breaker on the pole is high, and the first-time wiring is not good. The cross-arm spacing on the pole is required to be large. One pole cannot hold multiple similar or non-similar products, which is not convenient for installation and use on the pole; it solves the problem of outdoor pole The upper high-voltage boundary vacuum circuit breaker cannot directly and accurately measure the opening distance and overtravel of the vacuum interrupter, which affects the manufacturing quality of the product; it solves the problem that when the high-voltage boundary vacuum circuit breaker on the outdoor column increases the breaking current, the additional structure Many, bulky, and wasteful materials; solve the problem that the lead insulator of the secondary winding outgoing line of the current transformer cannot be installed on the side of the box operating handle; solve the zero-sequence current mutual inductance for the high-voltage boundary vacuum circuit breaker on the outdoor column The problem of long magnetic circuit and heavy weight solves the technical problem of complex transmission structure when the direction of movement of the output crank arm of the operating mechanism and the movement direction of the moving conductive rod of the vacuum interrupter are not in the same plane that people have been eager to solve.

Images