Pressure relief device for outdoor sealed electrical box body
A pressure relief device, sealed technology, applied in the substation/distribution device shell, substation/switchgear cooling/ventilation, switchgear and other directions, to ensure the pressure relief capability, ensure the effect of waterproof performance
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[0031] like Figure 5 Shown; A pressure relief device 4 of the present invention is installed on the bottom frame of the 125KW all-in-one machine. The pressure relief device 4 is installed in the closed space of the bottom frame. In order to complete the assembly of the pressure relief device 4, there are holes on the side of the base.
[0032] This model has passed UV test, high and low temperature cycle test, transportation and handling test, drop test, waterproof test, and vibration test. The pressure relief device 4 is waterproof and the rubber cover 10 is not loose. When the box body is inflated to 0.3MPa, the rubber cover 10 of the pressure relief device 4 will pop open to complete the pressure relief action.
[0033] According to different box body sizes and pressure relief requirements, several pressure relief devices 4 can be used together.
[0034] The present invention can generate enough pretightening force through the waterproof structure of the rubber cover sea...
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