Transformer substation main control room protection screen relay protection air switch shielding cover

Abstract

The invention discloses a transformer substation main control room protection screen relay protection air switch shielding cover, which comprises a protection screen cover, a cabinet door and a handle, wherein the outer end of the protection screen cover is fixedly connected with positioning teeth, the outer side of the protection screen cover is slidably connected with a protection screen cover,the interior of the protection screen cover is rotatably connected with a torsion plate through a rotating shaft, the outer side of the rotating shaft is sleeved with a torsion spring, and a transparent shielding cover is arranged on the outer side of the protective screen cover. The transformer substation main control room protection screen relay protection air switch shielding cover has the advantages that: firstly, the torsion plate is pressed towards the inner side, the protection screen cover is lifted upwards at the moment, when the height of the protection screen cover is matched with the height of the switch cabinet, the height of the protection screen cover can be adjusted, and the application range of the protection screen cover is widened; and secondly, the transparent shieldingcover is rotated, the transparent shielding cover is attracted to the outer side of the control switch through the magnetic suction cup, a shielding effect is provided for the control switch, the safety and stability of the switch cabinet in use are improved, and the installation efficiency of the transparent shielding cover is improved by adopting a magnetic attraction mode.

Description

technical field [0001] The invention relates to the technical field of electrical measurement, in particular to a relay protection circuit breaker shielding cover for a protection screen of a main control room of a substation. Background technique [0002] As we all know, the air switch is a very important electrical appliance in the low-voltage power distribution network and electric drive system. It integrates control and multiple protection functions. In addition to completing contact and segmenting circuits, it can also protect short circuits, severe overloads and undervoltages that occur in circuits or electrical equipment. [0003] The main protection screen cabinet relay protection circuit breaker is divided into protection power supply circuit breaker, measurement and control power supply circuit breaker and AC power supply circuit breaker for protection, etc., which are generally installed on the top of the screen cabinet, and the opening and closing handles of the ...

AI Technical Summary

Problems solved by technology

[0003] The main protection screen cabinet relay protection circuit breaker is divided into protection power supply circuit breaker, measurement and control power supply circuit breaker and AC power supply circuit breaker for protection, etc., which are generally installed on the top of the screen cabinet, and the opening and closing handles of the circuit breaker are exposed to the outside. When the operating personnel are inspecting (maintenance) the equipment or the maintenance personnel accidentally touch and close the circuit breaker during the maintenance process, this will cause the protection device in operation to malfunction or refuse to operate, resulting in the occurrence of accidents such as large-scale power outages in the power grid

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