Solid-sealed polar pole of vacuum breaker

Abstract

The invention discloses a solid-sealed polar pole of a vacuum breaker. The solid-sealed polar pole of the vacuum breaker comprises a vacuum arc extinguishing chamber I, a vacuum arc extinguishing chamber II and a vacuum arc extinguishing chamber III which are sequentially and horizontally arranged. The three vacuum arc extinguishing chambers are vertically mounted, and the upper end of every vacuum arc extinguishing chamber is a movable end; the lower ends of the vacuum arc extinguishing chamber II and the vacuum arc extinguishing chamber III are connected with a copper bus bar I, and the lower end of the vacuum arc extinguishing chamber I is connected with a copper bus bar II; the movable ends of the vacuum arc extinguishing chamber I and the vacuum arc extinguishing chamber II are mounted inside the same cavity through separation of an epoxy baffle, and the movable end of the vacuum arc extinguishing chamber III is arranged inside a independent cavity through separation; a mounting surface is arranged above the epoxy baffle. The solid-sealed polar pole of the vacuum breaker is easy to mould by casting, avoids the problems existing in the prior art such as concealed cracks, cracking, local amplification, low strength and radiating difficulty and fully meets requirements on power supply.

Description

technical field [0001] The invention relates to the field of electromechanical equipment, in particular to a solid-sealed pole of a vacuum circuit breaker. Background technique [0002] The solid-sealed pole is an electrical component that encapsulates high-voltage components such as vacuum interrupters and conductive terminals with epoxy resin through the APG process. The structure of the solid-sealed pole ensures that it is not affected by harsh environments such as pollution and condensation between phases, prevents the vacuum interrupter from being easily impacted by the outside world, and enhances the creepage of the main circuit. The electrical distance improves the withstand voltage level of the arc extinguishing chamber, and creates conditions for the maintenance-free of the arc extinguishing chamber and circuit breaker. The solid-sealed pole is the main component of the solid-sealed vacuum circuit breaker. Its structure directly affects the quality of the casting p...

AI Technical Summary

Problems solved by technology

The solid-sealed pole is the main component of the solid-sealed vacuum circuit breaker, and its structure directly affects the quality of the casting product, affects the product performance of the vacuum circuit breaker, and thus affects the reliability of power supply

[0003] However, most of the solid-sealed poles currently on the market have problems such as dark lines, cracks, local amplification, insufficient strength, and difficulty in heat dissipation, which make it difficult to meet the power supply requirements

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