SD834 Switch mode power supply unit

1、 Product Overview
The SD834 switch mode power supply unit can convert the power supply voltage to 24V DC, providing stable power supply for various devices. It is suitable for both non redundant and redundant applications, especially in redundant applications where it may need to be used in conjunction with diode voting units such as SS823 or SS832.
2、 Product Features
Efficiency and stability:
SD834 adopts advanced control technology and voltage stabilization circuit, which can effectively convert input electrical energy into stable output electrical energy and reduce energy loss.
It provides stable output voltage and current to ensure the normal operation of the powered equipment.
Compact design:
SD834 has a compact design that takes up less space and is suitable for places with limited installation space.
Multiple protection functions:
This power supply unit usually has multiple protection functions, including overload protection, overvoltage protection, short circuit protection, etc., which can protect the power supply unit and the powered equipment from damage.
Easy to install and maintain:
SD834 has a simple DIN rail installation method, making it easy to install and integrate into various systems.
Its installation and maintenance are relatively simple, and users can easily operate it.
Soft start function:
SD834 has a soft start function, which does not immediately reach full power output when the power is turned on, but gradually increases to the set value, which helps protect other devices in the circuit from the impact of instantaneous high currents.
Electrical characteristics and safety:
SD834 meets the safety and functional data requirements of European unified standards EN 50178, EN 61131-2, and UL 508, ensuring safety in various applications.
It has overvoltage category III and is suitable for connecting to the main TN network.
3、 Application Fields
SD834 may be used in industrial automation and control systems as a key component for power supply and signal processing. Due to its stability and reliability, it has been widely used in the field of industrial automation.
4、 Summary
The SD834 switch mode power supply unit has become an indispensable power supply solution in industrial control systems and automation equipment due to its high efficiency, stability, compact design, multiple protection functions, and easy installation and maintenance.

Recently, ABB Group, headquartered in Switzerland, has attracted industry attention for a technology called “Flash Charging”. According to the information obtained from ABB (China) Enterprise Communication Department, “This technology was designed to be promoted globally

The system has been operating on the route between Geneva Airport and Palexpo Exhibition Center since May 26th and will continue until March 14th, 2014. The head of the company stated that this technology is suitable for ordinary cities, large cities, and mega cities seeking sustainable public transportation solutions. Used for high-frequency bus routes to alleviate traffic congestion in urban areas

According to ABB, this technology is equipped with a water-cooled lithium titanate oxide LTO battery pack with a service life of 10 years. There is a rooftop charging system at the station that can charge for 15 seconds at a power of 400 kilowatts. These charging systems are connected to the power grid and equipped with intermediate storage devices (supercapacitors) to reduce the impact of short-term high power on the grid. The fast charging point can charge buses up to 1.65 kWh. In addition, at the bus terminal, there is a 200 kW charger that can fully charge the battery in 3-4 minutes.

At present, pure electric buses using this technology can carry 135 people. When the vehicle stops at the station, it is located by infrared, and the charging point on the roof is connected to the moving arm controlled by laser after positioning. After completing a 15 second recharge, the vehicle continues to move forward without affecting the normal operation of the bus. Its concept is similar to that of a tram, but it does not require the installation of a complex network.

In addition to ABB, similar concepts of fast charging during driving are also being promoted by many companies in China. During an interview with reporters, Wang Binggang, the leader of the supervision and consulting expert group for the National 863 Program’s major projects on energy conservation and new energy vehicles, referred to this mode as “online charging” The online charging mode can effectively solve the contradiction between battery quantity and range Wang Binggang stated. It is reported that currently, bus companies such as Hunan CSR Times Electric Vehicle, Youth Bus, and Hengtong Electric Vehicle are developing and promoting similar technologies.

As a Fortune 500 company, ABB’s business scope includes power and automation technology. In the field of electric vehicles in China, ABB is a supplier of DC drives, motors, programmable controller products, electric vehicle charging infrastructure, and energy storage products. In the field of charging infrastructure, ABB has not had a good opportunity, perhaps the latest “flash charging technology” can find some market space for ABB.

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