Ventilating system of heavy current circuit-breaker equipment

Abstract

The invention discloses a ventilating system of heavy current circuit-breaker equipment. The ventilating system comprises a heavy current circuit-breaker and a cabinet for accommodating the heavy current circuit-breaker, wherein the circuit-breaker is mounted fixedly in the cabinet through a mounting plate; a plurality of cushion and supporting blocks are arranged between the circuit-breaker and the mounting plate; the mounting plate is provided with a plurality of radiating slot holes; the circuit-breaker is lifted by the cushion and supporting blocks, and the integral stressed contact area is reduced; when an element works, heat generated by the element can be quickly transferred out of the cabinet through the radiating slot holes, and a plurality of vent holes and air inlet holes and a fan are configured in the cabinet to form radiating channels, so that the heat in the cabinet can be quickly discharged, the operating environment of devices in the cabinet is effectively guaranteed, and the service life of the equipment is prolonged.

Description

technical field [0001] The invention relates to a ventilation system for large current circuit breaker equipment. Background technique [0002] In the current market, with the increase of electrical equipment, in the low-voltage power supply system, the demand for high-current products is increasing. Under normal circumstances, the rated current of 4000A and above can be defined as high-current, which is for low-voltage switches. The cabinet puts forward high protection requirements. This type of cabinet is a product with high airtightness, and the design requirements for the protection level are relatively high, basically above IP42. The calorific value of the current low-voltage circuit breaker, part of the heat generated by it is dissipated to the space through the conductor connected to it, which increases the heat of the busbar. When the temperature of the main busbar and busbar rises, the carrying capacity increases with the temperature. And lower, the busbar device i...

AI Technical Summary

Problems solved by technology

[0002] In the current market, with the increase of electrical equipment, in the low-voltage power supply system, the demand for high-current products is increasing. Under normal circumstances, the rated current of 4000A and above can be defined as high-current, which is for low-voltage switches. The cabinet puts forward high protection requirements. This type of cabinet is a product with high airtightness, and the design requirements for the protection level are relatively high, basically above IP42. The calorific value of the current low-voltage circuit breaker, part of the heat generated by it is dissipated to the space through the conductor connected to it, which increases the heat of the busbar. When the temperature of the main busbar and busbar rises, the carrying capacity increases with the temperature. If the busbar device is in the power distribution cabinet, its rated current will decrease due to the change of heat dissipation conditions, which will easily cause overload, affect the equipment, and bring economic losses.

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