Outdoor LED display summer protection knowledge

Here, we specifically for the summer display heat dissipation, lightning protection and waterproof summed up some experience for you to understand:

First, outdoor LED display in summer heat dissipation protection measures:

1, if the display area is within 25 square meters, generally can not use air conditioning, if the economicconditions allow, can use two diameter of about 450mm fan can be, according to the size of the installation space to decide.

Second, if the area is more than 25 square display is divided into the following three cases.

1) If the display screen is installed against the wall and can protruding one meter from the wall, it is recommended to select the fan according to the size of the area, and the fan installation position should be arranged in sequence above the side of the screen. If you buy a display screen of 70 square P10 outdoor full color LED display, it means that the fan you buy must be 5 axial flow fans with a diameter of about 500mm. The fan is the kind of suction air to the outside, and when you install the fan, you must ensure that there is a net inside. To prevent technicians from sucking clothes or other objects in while they are repairing the display and causing unpredictable damage. In order to waterproof, aluminum alloy blinds should be installed on the air outlet of the fan on the outside aluminum plastic plate.

2) If the display screen is installed with a single column, then it is best to use a fan for heat dissipation. The fan is installed on the back of the large screen by the top of the aluminum plastic plate, in the form of shutters so that the rain does not enter the display screen when it rains.

If it is a display in the form of double columns, a few blinds can be opened in the middle of the double columns. The window is an air inlet, and the fan above is an exhaust, so as to form a complete air convection to make the heat dissipation effect better.

3) If you must install air conditioning, then the purchase cost and use cost will increase, but also must consider the air conditioning outside the installation of the space and beauty, and the heat dissipation effect will be worse than the fan.

Third, outdoor LED display summer lightning protection measures of five points:

1, for direct lightning protection.

Lightning rods are installed on the support structure of the outdoor full-color LED display, and the indoor display screen or the display screen next to a tall building can not be considered to install lightning rods.

2. Counterattack against steel structure.

Connect the steel structure to the shell of the display screen, do a good job of equal potential, and do a good job of grounding, the grounding resistance value is generally less than 10 ohms, if the resistance value can not meet the requirements, it is necessary to do additional artificial grounding network. The lightning arrester should also be grounded.

3. For the lightning current induced on the power line

Install a single-phase or three-phase SPD on the power cable. The cross-sectional area of phase cables must be at least 10mm and that of ground cables must be at least 15mm.

4. For the lightning current induced on the signal line.

Install a signal lightning arrester on the signal line. The signal arrester is determined according to the signal interface of the system. If it is a network cable, the network signal arrester is installed, and the DB9 interface arrester is installed for the serial interface. The cross-sectional area of the grounding cable must be at least 1.5mm.

5. Induced current for lightning strikes.

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