LED Wall Washer Light control cabinets generally control dozens of high-pressure sodium lamp street lamps. The early simple control cabinets were manually switched by LED Wall Washer Light Suppliers; the slightly more complicated energy-saving high-pressure sodium street lamp control cabinets were manually transformed by transformers in the middle of the night. Reduce power; further, accept remote control for unified automatic switching or dimming control of all high-pressure sodium lamp street lamps or LED lamps, or individual intelligent control for each LED lamp.

Centralized high-voltage DC power supply LED lighting control cabinet. First, the control cabinet generally controls dozens of LED lamps. First, the grid AC power is converted into a high-voltage DC voltage and output to the LED lamps. The control cabinet contains an intelligent control circuit module that can accept remote control, and then controls the power module to adjust The size of the output DC voltage can be used to automatically switch and dim all LED lamps, or a more complex intelligent control system can perform multi-functional intelligent control on each intelligent LED lamp.

Second, the power module of the control cabinet can be divided into a single high-power power module or a combination of multiple low-power power sub-modules. The DC output of the combination of multiple low-power power supply sub-modules can be further divided into unified output after parallel connection or multiple outputs respectively. Due to the unified output mode after parallel connection, when one of the power sub-modules fails, the hot backup power sub-module is immediately connected to the output line, which can not only ensure the reliable operation of the system under the same power output, but also make the power sub-module backup quantity minimized. But the technical requirements are relatively high, for example, the error of the DC output voltage of each power supply sub-module should be as small as possible. The DC output voltage can be divided into high voltage DC such as 300V (high output voltage can reduce the loss of wires and lines and improve the overall efficiency of the system), or safe low voltage such as below 120V (the electrical safety of lines and lamps is higher for the human body, but the same load The line loss will be much larger, the line itself will generate more heat and the cost will be high).

Traditional AC power supply lines. Single-phase three-wire (live, neutral, and ground), or three-phase five-wire (three live, neutral, and ground) power supply lines. Centralized high-voltage DC power supply line First, the input terminal of the control cabinet needs to be connected to the AC power grid, which can be divided into two types: single-phase AC input or three-phase AC input. Three-phase AC input can balance the grid load, which is a better way. The output DC power supply line can be three-wire (for the positive pole, negative pole and ground wire of >120V high-voltage DC), or two-wire (corresponding to the positive pole and negative pole of ≤120V DC, and when meeting the requirements of safety extra-low voltage). If there is another AC power grid access point in the adjacent LAN of the same intelligent lighting project, the power line of the original AC power grid can be used as the DC output line in the transformation of the LED Wall Washer Light system, otherwise additional wiring is required for the output DC power supply circuit. The same goes for new projects. This point is easier to realize with the intelligent lighting system of public buildings than with the intelligent lighting system of street lamps, but there are still many other issues to consider.