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Arc-chute of 40.5kV hexafluoride sulphur circuit breaker

A technology of sulfur hexafluoride and circuit breaker, applied in the field of arc extinguishing chamber, can solve problems such as inability to meet the power system

Inactive Publication Date: 2008-03-05
PINGGAO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the circuit breakers known to open and close back-to-back capacitor banks are mostly only C1 level due to the structure of the arc extinguishing chamber and other reasons, which cannot meet the desire of the power system to pursue no heavy breakdown circuit breaker (C2 level)

Method used

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  • Arc-chute of 40.5kV hexafluoride sulphur circuit breaker
  • Arc-chute of 40.5kV hexafluoride sulphur circuit breaker

Examples

Experimental program
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Embodiment Construction

[0010] In Figure 1 and Figure 2, the static contact device and the moving contact device are installed in the porcelain sleeve 1, and the two ends of the porcelain sleeve 1 are sealed and connected to the upper and lower terminal boards 2 and 3 through the flange 20 and the adhesive 21, and the upper wiring Plate 2 and bracket 13 are integral castings, lower terminal plate 3 and piston 7 are also integral casting parts, static contact device 4 includes static arc contact 11, static contact seat 9, installed on static contact seat 9 The static main contact 10 on the top, the spring 14 sleeved on the static main contact 10, the shield cover 12 and the static arc contact 11 connected to the bracket 13 through the center hole of the static contact seat 9.

[0011] The moving contact device 5 includes a pressure cylinder 6 sleeved outside the piston 7, the upper end of the pressure cylinder 6 is a moving main contact 15, a nozzle 18 installed on the inner arm of the moving main cont...

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Abstract

An arc extinguishing chamber of a 40.5kV SF6 circuit breaker includes an upper connection terminal and a lower connection terminal closely installed on the up and down ends of a porcelain set, a static contactor device connected with the upper connection terminal and a dynamic contactor device connected with the lower terminal in the set, in which, a static arc contactor in the static contactor device and a dynamic arc contactor in the dynamic device are matched radially in gaps characterizing that the inner diameter of the static arc contactor is matched with the outer diameter of the dynamic arc contactor in gaps, the outer diameter of the static arc contactor is 35-41mm, the arc chamfer radius of the end of the static arc contactor is 2.75mm so as to improve distribution of electric fields.

Description

technical field [0001] The utility model relates to a high-voltage circuit breaker, in particular to an arc extinguishing chamber of a 40.5kV sulfur hexafluoride circuit breaker. Background technique [0002] Sulfur hexafluoride circuit breakers play a role in control and protection in power systems, and are used in substations or transmission lines to switch various currents. In addition to the short-circuit current and load current at the outlet terminal, the current type should also include capacitive current and inductive current. Shunt capacitor banks and shunt reactor banks are widely used in power systems to compensate for reactive power loss, stabilize system voltage, and improve grid power supply quality. The shunt capacitor bank and shunt reactor bank input or exit line is mainly completed by the circuit breaker. When breaking the capacitive current generated by the capacitor bank, since the contact gap of the circuit breaker arc extinguishing chamber has not bee...

Claims

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Application Information

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IPC IPC(8): H01H33/12H01H33/22H01H33/91
Inventor 王普庆牛群领张军杨芳
Owner PINGGAO GRP
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