Box variable foundation vent role

The role of the box variable foundation vents, can make the indoor air flow to strengthen the temperature is reduced. its function in addition to increase the ventilation effect also blocked the dust into the room, to ensure that the box variable shell protection level, to prevent small animals from the bottom into the box set up the threshold mounted on the shutter screen also played a role in protecting the box internal components of the normal operation of the function, but the screen more or less reduce the effective area of the air intake, and there is also a fan shutter form of combining the structural advantages of the fan and the shutter, in practice, mostly used. In practice, mostly used.

Introduction of the box substation foundation

The box substation foundation vents have been widely used around the world, the existing box foundation vents ventilation system, only in the main box body to open a number of vents, this structure ventilation circuit is short, the circuit is not smooth, can not effectively form the upward flow, can not be fast, effective will be Box-type substation heat out of the box, and can not ventilate the ventilation can not be adjusted, thus affecting the efficiency of the transformer as well as the service life of the transformer.