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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specific Embodiment 1
[0030] A power supply system for a P20 full-color LED display, including a distribution box, a switch box, a first-to-third-level leakage protector, an LED display box distributed in 4 rows and 5 columns, and the main power inlet line of the distribution box is set The first-level leakage protector, the second-level leakage protector is installed on the power inlet line of the switch box, and the third-level leakage protector is installed on the power inlet line of the LED display box. The external 380V AC is input to the distribution box, and the 210V~ The 230V voltage is output to the switch box, and the switch box outputs the 210V~230V voltage to the LED display cabinet, and the power supplies of two adjacent LED display cabinets are connected in cascade.
[0031] The AC / DC power supply module in each LED display cabinet is a 220V / 5V power supply module.
[0032] The switch box outputs 5-way 220V power lines, which are respectively connected to the lowermost cabinet power s...
specific Embodiment 2
[0037] A power supply system for a P6 full-color LED display, including a distribution box, a switch box, a first-to-third-level leakage protector, an LED display box distributed in 10 rows and 15 columns, and the main power inlet line of the distribution box is set The first-level leakage protector, the second-level leakage protector is installed on the power inlet line of the switch box, and the third-level leakage protector is installed on the power inlet line of the LED display box. The external 380V AC is input to the distribution box, and the 210V~ The 230V voltage is output to the switch box, and the switch box outputs the 210V~230V voltage to the LED display cabinet, and the power supplies of two adjacent LED display cabinets are connected in cascade.
[0038] The AC / DC power supply module in each LED display cabinet is a 220V / 5V power supply module.
[0039] There are two switch boxes, one of which outputs 15 channels of 220V power lines, and the other switch box outp...
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