In the field of power systems and industrial automation, wall-mounted DC switching power supplies are being used to meet the power needs of specific scenarios with their unique designs and functions. How can this seemingly small device produce huge amounts of energy in a limited space? In this article, we will discuss in depth the basic composition of wall-mounted DC power supply, working principle, characteristics ，and advantages, as well as application scenarios.
1. The basic composition of the wall-mounted DC switching power supply
The main components of Wall Mounted Communication Switch Power Supply
include:
Rectifier module
The rectifier module is the core of the power supply and is responsible for AC-to-DC conversion. It adopts high-frequency switching power supply technology with a very high conversion efficiency to supply stable DC power to the equipment. For instance, the rectifier module converts the alternating current of utilities into a DC voltage that suits the communication equipment to make sure the communication equipment operates normally in some communication base stations.
Monitoring Unit
The monitoring unit is the “brain” of the power supply. It monitors, in real-time, the working status of the switching power supply, including output voltage, current, battery pack voltage， and charge/discharge current. Through these monitoring data, the monitoring unit is able to detect potential faults in a timely manner and issue alarm signals. Meanwhile, it can also control the rectifier module according to the pre-set parameters for the realization of intelligent management of a power screen. For instance, when the power of the battery pack is too low, the monitoring unit automatically regulates the output of the rectifier module to raise the charging current to the battery pack to guarantee that the battery pack is in good working condition.
Battery Pack
The battery pack serves as the backup power for the wall-mounted DC switching power supply in case the utility power is interrupted. Normally, lead-acid batteries or lithium-ion batteries are used. The capacity size of the battery pack depends on different application scenarios and load requirements. In normal operation, the rectifier module provides power for the load while charging the battery pack to maintain the fully charged or nearly fully charged state of the latter. When utility power fails, the battery pack is switched into operation in an instant and continues to supply stable DC power for the load to protect the uninterrupted operation of important equipment. For example, in some power automation systems, when the power grid blackouts, the battery pack can provide hours or even longer for relay protection devices, automation monitoring equipment, etc. to provide power support, to prevent system failure and data loss due to power outages.
2. The working principle of wall-mounted DC power supply
The working principle of wall-mounted DC switching power supply is based on the rectification of AC power supply, distribution of DC power supply and charging/discharging management of battery pack. After the utility power is connected, it is converted into DC power by the rectifier module and distributed to each load of equipment through the DC power distribution unit. Meanwhile, the monitor unit monitors the whole process to ensure stability in the power supply. During an interruption of the utility power, the battery pack quickly switches to work; after the utility power is restored, the rectifier module charges and replenishes the battery pack.
3. Features and advantages of wall-mounted DC switching power supply
Space saving
The wall-mounted design is one of its biggest features. Compared with the traditional floor-mounted DC power switch, it can be directly mounted on the wall, which greatly saves the floor space. This is of great significance for places with limited space, such as small power distribution rooms, communication base stations, elevator machine rooms ,and so on. In these places, an inch of space is quite valuable; wall-mounted DC power supply panels can present reliable DC power solutions without occupying much floor space so that the utilization of place can be improved.
Easy Installation
The design factor of a wall-mounted DC switching power supply makes the installation convenient. Just choose a good mounting point on the wall, make holes, and fix the power supply screen very securely. Compared to the traditional floor-mounted power panel, it avoids the complicated process of ground infrastructure and heavy equipment handling, thereby greatly reducing the installation time and labor cost. For new small commercial buildings, the power panels can be installed quickly during renovation without interfering with subsequent renovation work and equipment layout.
High Reliability
Despite their small size, wall-mounted DC switching power supplies are excellent in guaranteeing reliability. The internal structure of the unit is designed and selected to ensure high efficiency and stability of the rectifier module, precise monitoring, and intelligent management capability of the monitoring unit, excellent charging/discharging characteristics and long life of the battery pack. In addition, the wall-mounted DC switching power supply is equipped with comprehensive protection mechanisms, including over-voltage, over-current, short-circuit, and battery over-charging and over-discharging protections, which work together to prevent equipment damage caused by external faults or internal problems, ensuring the stability and reliability of the power supply system. In the industrial automation field, which requires highly stable power supplies, wall-mounted DC power can provide uninterruptible and stable power to important control equipment, ensure the continuity of the production process, and reduce the shutdowns and economic losses caused by power problems.
4. the wall-mounted DC power supply application areas
Communications industry applications
Wall-mounted DC power supply screen plays an important role in communication base stations, providing stable DC power for key communication equipment such as base station transceivers, transmission equipment, and monitoring equipment. Given that communication base stations are often located in urban rooftops or mountainous areas where space is limited, the space-saving and easy-to-install characteristics of wall-mounted switching power supplies are particularly important. High reliability ensures the constant work of a communication network and allows users to enjoy unobstructed communication services.
Power system automation applications
In important places like automation substations and switching stations of power systems, DC switching power supplies with wall mounting provide the necessary supply of DC power to relay protection devices, automatized monitoring systems, and signal indication equipment. These devices are of utmost importance for the power system to function safely and stably. The high reliability and stability of the wall-mounted DC switching power supply meet the strict requirements of the automation equipment in the power system and guarantee the safe operation of the power system.
Other industrial applications
Wall-mounted DC switching power supplys are also widely used in other fields such as industrial automation production lines, elevator machine rooms, and intelligent buildings. In the industrial automation production line, it provides DC power for the control equipment, sensors, and actuators to guarantee the efficient and stable operation of the production line. In elevator machine rooms, it provides standby power for the elevator control system and lighting system, enabling the safe operation of the elevator when utility power is interrupted. It also offers DC power supplies to access control systems, security monitoring systems, fire alarm systems, etc. in smart buildings, which can improve both the intelligent management level and safety of buildings.
5. Selection and Maintenance Guide for Wall-mounted DC Switching Power Supply
Selection Guide
Determination of load power: select the appropriate power capacity according to the actual application sum of load equipment power of wall-mounted DC switching power supply. The starting current and peak current of the load should be considered, and the power screen must be able to meet the maximum demand of the load with an appropriate margin.
Selection of capacity of battery pack: determine the time of continuing power supply by the capacity of the battery pack through the power screen after a utility power interruption, and select the appropriate capacity of the battery pack. According to the power consumption of the load, the discharge characteristics of the battery pack ,and the permissible depth of discharge, it is necessary to ensure that during the interruption of utility power supply, the battery pack supplies power for the load stably and reliably.
Requirements for monitoring function: According to the requirement of application scenario for the degree of power management intelligence, choose the wall-mounted DC switching power supply with the corresponding monitoring function. For large-scale data centers requiring remote monitoring and centralized management, choose those with network communication functions and perfect monitoring software.
Maintenance Guide
Regularly check the rectifier module: whether the working temperature of the rectifier module is normal and whether there is any abnormal heating; whether the output voltage and current are stable; clean the heat sink to ensure good heat dissipation and prevent overheating damage.
Battery Pack Maintenance: Perform charge/discharge test regularly to check the battery capacity; observe the appearance of the battery, and check for deformation and leakage; clean the battery poles to ensure reliable connection; replace the aging or damaged batteries in time according to the service life and performance of the batteries.
Monitoring unit maintenance: check if the display of the monitoring unit is normal and the monitoring data is accurate. Upgrade the software of the monitoring unit regularly to guarantee that the latest functions can be used and compatibility assured; check whether the communication between the monitoring unit and other equipment is normal to ensure that it can timely and accurately receive and send alarm information.
A wall-mounted DC power switch also occupies an important position in the modern power and industrial fields. If the proper selection and maintenance points could be performed, it would enable them to give full play to its performance and thus provide all kinds of equipment with stable and reliable DC power supplies. If you want to buy it, I’d like to recommend a manufacturer named Huijue Group, and we can provide professional configuration suggestions to customers.