LED display screen power supply system
A technology of LED display screen and power supply system, applied in the direction of panel/switch station circuit devices, etc., can solve the problems of frequent tripping of leakage protectors, unreasonable power supply scheme design, etc., to improve selectivity and reliability, and reduce surge voltage. Effect
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[0029] Specific embodiment one,
[0030] A P20 full-color LED display power supply system, including a power distribution box, a switch box, one to three leakage protectors, a LED display box with 4 rows and 5 columns, and the power distribution box is set on the main power supply line First-level leakage protector, a second-level leakage protector is installed on the power inlet of the switch box, and a third-level leakage protector is installed on the power inlet of the LED display box body. The external 380V AC power is input to the distribution box, and the voltage is changed to 210V~ 230V voltage is output to the switch box, and the switch box outputs 210V~230V voltage to the LED display box, and the power supplies of two adjacent LED display boxes are connected in cascade.
[0031] The AC / DC power module in each LED display box is 220V / 5V power module.
[0032] The switch box outputs 5 lines of 220V power cords, which are respectively connected to the lowermost cabinet power i...
Example Embodiment
[0036] Specific embodiment two,
[0037] A power supply system for P6 full-color LED display, including power distribution box, switch box, primary to tertiary leakage protector, LED display box with 10 rows and 15 columns, distribution box main power supply line setting First-level leakage protector, a second-level leakage protector is installed on the power inlet of the switch box, and a third-level leakage protector is installed on the power inlet of the LED display box body. The external 380V AC power is input to the distribution box, and the voltage is changed to 210V~ 230V voltage is output to the switch box, and the switch box outputs 210V~230V voltage to the LED display box, and the power supplies of two adjacent LED display boxes are connected in cascade.
[0038] The AC / DC power module in each LED display box is 220V / 5V power module.
[0039] There are two switch boxes. One switch box outputs 15 lines of 220V power lines, the other switch box outputs 15 lines of 220V power...
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