24kV solid insulated fully-closed switch combined electrical appliance

Abstract

The invention discloses a 24kV solid insulated fully-closed switch combined electrical appliance, which is applied to an alternating current trunk line or an alternating current distribution network and comprises three phases of high-voltage load switch units and a fuse protector unit; each phase of high-voltage load switch unit comprises a switch insulated hood fixed in a box body, a driving hood, an isolating switch, an earthed switch and a vacuum switch; the upper parts of the three phases of switch insulating hoods are connected with the driving hood which is formed by connecting an upper half cylinder and a lower half cylinder; the isolating switch, the earthed switch and the vacuum switch are arranged in the switch insulating hood and the driving hood; and the fuse protector unit is arranged below the high-voltage load switch unit. The invention has the advantages of compact structure, low cost, safe use, easy maintenance and debugging and long service life.

Description

technical field [0001] The invention relates to a circuit device of an AC main line or an AC power distribution network, in particular to a 24KV solid-insulation fully-enclosed combined electrical appliance. Background technique [0002] Traditional 24KV combined electrical appliances mostly use SF 6 The gas seals and insulates the high-voltage vacuum switch; because SF6 gas is toxic and easy to leak after arc extinguishing, the metal box is large in size, requires high sealing performance, and the processing technology is complicated, resulting in high cost of the box and complicated maintenance and testing , the protection level is not enough, and the charged body is exposed, which is eroded by air and dust, which may easily cause corrosion of the charged body, reduce the insulation level, and easily cause personal injury or death accidents; the integral structure is large in size, and it is inconvenient to install and debug , cannot be replaced and repaired on site; the ...

AI Technical Summary

Problems solved by technology

[0002] Traditional 24KV combined electrical appliances mostly use SF 6 The gas seals and insulates the high-voltage vacuum switch; because SF6 gas is toxic and easy to leak after arc extinguishing, the metal box is large in size, requires high sealing performance, and the processing technology is complicated, resulting in high cost of the box and complicated maintenance and testing , the protection level is not enough, and the charged body is exposed, which is eroded by air and dust, which may easily cause corrosion of the charged body, reduce the insulation level, and easily cause personal injury or death accidents; the integral structure is large in size, and it is inconvenient to install and debug , cannot be replaced and repaired on site; the bus bar is located at the bottom of the switch, which is inconvenient for assembly and maintenance

[0003] The existing solid insulated fully enclosed ring network cabinet is only suitable for 10KV switchgear, not suitable for switchgear with larger working power, so such a combined electrical appliance is needed to meet the use of switchgear with a large workload

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