LED rental displays do not necessarily require a power distribution cabinet, but there are many benefits to using a power distribution cabinet.
You can not use the power distribution cabinet
If it is a small LED rental screen, such as a small screen area (such as a screen area of less than 6 square meters), the use of simple scenarios (such as small indoor activities, temporary display booths, etc.), and its power input requirements are relatively low (power within 3KW), in this case you can directly use qualified sockets and plugs to connect to the power supply.
In this case, ensure that the capacity of the power supply can meet the power requirements of the display, and there is a proper grounding protection, and the display can be normally powered. At the same time, in this simple scenario, the power distribution and management requirements are not particularly high, so you can not use the power distribution cabinet.
The use of power distribution cabinet benefits
Power distribution and management
For large LED rental screens (such as large outdoor music festival stage screens, giant displays in large exhibitions, etc.), the power demand is high, which may reach tens of kilowatts or even higher. The power distribution cabinet can reasonably distribute the total power supply to different modules or areas of the display screen.
For example, the LED display of a large outdoor concert can be distributed to different parts of the main screen in the center of the stage, the secondary screen on both sides and the background decoration screen through the power distribution cabinet to ensure that each part can obtain a stable power supply, and the power supply of each part can be easily controlled. For example, open or close a screen in an area for debugging or maintenance.
Overload protection
Power distribution cabinets are usually equipped with overload protection devices such as circuit breakers and fuses. When a part of the display fails, resulting in too much current, these protective devices can cut off the circuit in time to prevent damage to the device.
For example, if one of the display modules has a sharp rise in current due to a short circuit, the circuit breaker in the distribution cabinet will immediately trip to avoid the expansion of the fault scope and protect the other parts of the display screen and the surrounding electrical equipment from damage.
Voltage regulation and stabilization
In some places where the power supply environment is unstable, the voltage regulator in the distribution cabinet can adjust the voltage to ensure that the display screen gets a stable voltage supply.
For example, in outdoor activities in remote areas, the grid voltage may fluctuate, and the distribution cabinet can convert the input unstable voltage into the stable voltage required by the display screen (such as stabilizing the fluctuating voltage of 170-250V at about 220V), so as to ensure the normal operation of the display screen and extend the service life of the display screen.
Safety guarantee
The PDC provides centralized grounding protection and introduces the leakage current of the display device to the ground to ensure the safety of personnel.
For example, in a humid outdoor environment or where there is frequent contact with the display screen, a good grounding system can prevent electric shock accidents due to equipment leakage. At the same time, the power distribution cabinet can also be closed management of the power line to reduce the safety risks caused by line exposure.
How to choose the right distribution cabinet?
The rated power of the PDC must be greater than or equal to the maximum power required by the display. At the same time, pay attention to the power factor of the distribution cabinet, and try to choose products with high power factor to improve the utilization efficiency of electric energy. For example, if the maximum power of the rental screen is 10kW, you should choose a power distribution cabinet with a rated power of 12KW or higher.
At the same time, the number of output channels should be considered, if a stage LED rental display is divided into four parts: the main screen, the secondary screen on both sides and the background decoration screen, then the distribution cabinet is best to have four independent output channels in order to respectively control the power supply of these parts.
A high-quality power distribution cabinet should have reliable overload protection function. For example, if the current of the display suddenly increases to exceed the rated current of the circuit breaker due to a fault, the circuit breaker immediately cuts off the circuit to protect the device.
Since the LED rental screen may have human contact in many occasions, leakage protection is crucial. For example, in a humid outdoor environment, if there is leakage on the display screen, the leakage protector can ensure the safety of personnel.
Select a power distribution cabinet with voltage regulation, such as one with a voltage regulator. In different power supply environments, the voltage may fluctuate, and the regulator can stabilize the input voltage within the required operating voltage range of the display.
Preferred choice of well-known brands of power distribution cabinets, these brands usually have strict quality control and production standards. You can view the brand's user evaluation, industry reputation and product certification, such as CE certification, UL certification.
The size of the PDC should be easy to place near the display and not take up too much space. As the equipment is leased, it may need to be moved frequently. Therefore, the distribution cabinet should have good portability, such as easy to handle, light weight and so on.
