Small-sized vacuum ring main unit

Abstract

The invention discloses a small-sized vacuum ring main unit. A three-position disconnecting switch (4), a mechanical interlocking assembly (5) and a spring operating mechanism (2) are arranged at the upper part of a casing (1) and are sequentially connected; an operation button (4.1) of the three-position disconnecting switch (4) is arranged outside the casing (1); an insulated bus (6) is arranged below the spring operating mechanism (2); the upper end of the insulated bus (6) is connected with the spring operating mechanism (2); an arcing chamber pole column (3) is arranged below the three-position disconnecting switch (4) in the casing (1), the arcing chamber pole column (3) is connected to the insulated bus (6), and a wiring terminal (6.1) of the insulated bus (6) is arranged outside the casing (1); the casing (1) is a closed casing; and the spring operating mechanism (2), the three-position disconnecting switch (4) and the mechanical interlocking assembly (5) are arranged in the closed casing. The small-sized vacuum ring main unit is small in size and high in work reliability.

Description

technical field [0001] The invention relates to the technical field of switch electrical control, in particular to a small vacuum ring network cabinet with a rated voltage of 12KV. Background technique [0002] The small vacuum ring network cabinet in the prior art includes a housing, a spring operating mechanism, an arc extinguishing chamber pole, a three-position isolating switch, a mechanical interlock assembly and an insulating bus bar; the three-position isolating switch, mechanical interlock The assembly and the spring operating mechanism are arranged on the upper part of the housing; the three-position isolating switch is arranged at the end close to the operation panel, the spring operating mechanism is arranged at the end far away from the operation panel, and the mechanical interlock assembly It is installed between the three-position isolating switch and the spring operating mechanism, the input end of the mechanical interlock assembly is connected to the three-po...

AI Technical Summary

Problems solved by technology

The small vacuum ring network cabinet with the above structure has the following defects in the actual use process: since the spring operating mechanism, the pole of the arc extinguishing chamber, the three-position isolating switch, the mechanical interlock assembly and the insulating busbar are all arranged in the housing, so Not only the volume of the small vacuum ring network cabinet is increased, but also the small vacuum ring network cabinet is arranged in the field. Since the shell is not sealed, it is easy to produce pollution, condensation and other problems, which will affect the normal operation of the small vacuum ring network cabinet

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