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Intelligent precision power distribution cabinet
product description
The intelligent precision power distribution cabinet is a power distribution cabinet that comprehensively collects all energy data for the energy terminal of the data center room. Provide high-precision measurement data for the terminal energy monitoring system, and reflect the power quality data in real time through the display unit. And upload to the background environmental control system through digital communication. In order to achieve real-time monitoring of the entire power distribution system and effective management of operating quality. Help users optimize network data centers, strengthen energy consumption management, improve server rack operation efficiency, and provide reliable guarantee for all-round green IDC. It is mainly used for important customers such as IDC data centers or industrial enterprises such as China Mobile, China Unicom, China Telecom, China Tower, finance, government and IT, etc., to provide power distribution, distribution circuit protection, metering, management for important equipment such as network servers. For computer grounding and other services, it is used in the field of uninterrupted power supply that requires high power supply reliability. The power distribution cabinet adopts intelligent precision measurement and acquisition technology to realize the monitoring of the total input of power distribution, the voltage, current, power, electric energy and other parameters of the distribution of the branch circuit, and provides a variety of data upload interfaces, which can be quickly and easily connected to the user's dynamic loop system . The cabinet door is equipped with an input indicator light and a touch screen, which is convenient for users to check, set and maintain locally. The precision power distribution cabinet adopts the structure of the server cabinet. The appearance and size specifications of the power distribution cabinet are perfectly unified with the height of the server cabinet. The internal electrical structure is simple and practical, and the layout is reasonable. Cable management and maintenance.
Features
◎The appearance adopts the design of server cabinet, and the large-screen color Chinese touch screen enables users to detect and manage power quality data more intuitively;
◎Real-time display of bus three-phase voltage, three-phase current, frequency, total power, active power, power factor, electricity, harmonic percentage and other electrical parameters:
◎Real-time display of branch current, switch status, load percentage parameters;
◎Using the measurement and control device of high-performance microprocessor to realize the intelligent monitoring and information management platform;
◎10-inch dynamic color touch control screen, friendly human interface, simple and intuitive operation;
◎The monitoring device realizes multi-level authority management and effectively prevents misoperation;
◎The distributed control mode of centralized management of distributed control is adopted to form a network-integrated fully distributed control system to meet the real-time, fast and reliability requirements of system operation:
◎Using RS485 interface and MODBUS communication protocol:
◎It has perfect fault alarm and event self-diagnosis and analysis functions, and can save 1000 pieces of historical record information;
◎The hardware is easy to expand, and it can monitor up to 320 status information in real time:
◎Provide multi-channel normally open passive contact output, which can be used as a classified alarm;
◎The monitoring device has the function of self-recovery after power failure, and all information is automatically saved when the power is cut off;
◎ Rich alarm functions, the main circuit includes overvoltage, undervoltage, phase loss, power failure, overcurrent, voltage/current superhigh/ultralow threshold, impact overcurrent, and abnormal frequency. The branch circuit includes over-current high/ultra-low threshold, impact over-current, switch status;
◎Can provide automatic or manual switching of dual power supply:
◎All key components adopt internationally renowned crystal brands:
◎Concise busbar system provides a safe solution for power distribution equipment:
(1) Intelligent precision power distribution cabinet can collect more electrical data
In addition to collecting the voltage and current of the main distribution circuit through the power meter, similar to the ordinary power distribution cabinet, the intelligent power distribution cabinet can also collect electrical quality data such as harmonics, on-off status and current status of the sub-circuits of the power distribution cabinet. , grounding and lightning protection equipment status and other data. For the collection of the above data, in addition to ordinary electricity meters and main voltage and current transformers, it is also necessary to add more sensors and transmitters for data collection.
The data collected by the current intelligent power distribution cabinet usually include the voltage, current, harmonics of the incoming line, the on-off state of the sub-circuit, the current of the sub-circuit, and the status of grounding and lightning protection equipment. temperature, and collect fault warning information of the power distribution cabinet. The display of the collected data can be displayed locally through the power meter and special display screen, or it can be remotely sent to the monitoring system through RS485 and Ethernet interfaces.
(2) The intelligent precision power distribution cabinet should have a convenient branch circuit maintenance function
Since many data centers require IT equipment to operate 7x24 hours, special maintenance requirements are put forward for intelligent power distribution cabinets. For example, when repairing and replacing miniature circuit breakers, the upstream incoming circuit breaker cannot be disconnected to avoid affecting the parallel connection of the busbar. Other circuits on the board, that is, the electrical components used in the intelligent power distribution cabinet are required to support thermal maintenance. At present, the methods available on the market include the use of special copper bus bars, and the use of ordinary copper bus bars to solve the problem by adding hot-swappable bases to ordinary micro-breaks. Many electrical component manufacturers provide such solutions.
(3) The intelligent precision power distribution cabinet needs to be able to manage and reduce the harmonic current caused by the load
Since IT equipment is all inductive load, it brings a lot of harmonics to the upstream power distribution system. These harmonics affect the stable operation of the data center power distribution system and the service life of electrical equipment. Therefore, the intelligent power distribution cabinet needs to increase the functions that can manage and reduce the harmonics brought by IT equipment.
The harmonic control method adopted by intelligent precision power distribution cabinets is mostly series isolation transformers in the distribution lines. After adding the isolation transformer, the common mode noise brought by the IT load to the grid is significantly reduced.
(4) The intelligent precision power distribution cabinet can maintain the zero-ground voltage, which meets the requirements of IT equipment for the zero-ground voltage difference
In the data center computer room, the zero-to-ground voltage difference is too high, which will bring many inexplicable faults to the operation of the IT equipment in the computer room. The national standard GB/T50174-2008 puts forward requirements for the neutral-ground voltage of the power distribution in the computer room, so it is necessary to take measures at the end of the intelligent power distribution cabinet.
In order to reduce the zero-to-ground voltage difference of IT equipment, in the installation of intelligent precision power distribution cabinets, re-earthing is usually adopted at the end of the isolation transformer, and the neutral current caused by the three-phase unbalance of the IT equipment is introduced into the ground.
(5) Intelligent precision power distribution cabinet can easily adjust the balance of three-phase current
Many IT equipment uses single-phase electricity, which will cause imbalance of three-phase current. In order to make full use of energy and reduce waste of electric energy, managers need to adjust the balance of three-phase current frequently. If the intelligent precision power distribution cabinet can provide the function of convenient adjustment of three-phase current balance, it can effectively improve the maintenance efficiency.
At present, the miniature circuit breaker products launched by some manufacturers can be combined with the busbar scheme, and the balance of the three phases can be easily adjusted by means of picks. However, if the power distribution cabinet adopts ordinary miniature circuit breakers, it is necessary to select the appropriate phase while connecting the IT equipment. Once the IT load is connected and then adjusted, it will affect the load operation.
(6) The intelligent precision power distribution cabinet needs to install the lightning protection device
In order to protect IT equipment, intelligent precision power distribution cabinets are equipped with lightning protection devices. According to the IEEE IIOO standard, it is considered that the protection level of ordinary lightning protection equipment cannot fully guarantee the induced lightning that discharges large currents. It is recommended to use transient surge suppression (TVSS) devices, which are connected in parallel with micro-breakers.
(7) The intelligent precision power distribution cabinet needs to have a more comprehensive local display screen, and can give early warning of equipment failures
Many intelligent precision power distribution cabinets have local display function, use touch screen or button to query the collected data, and some also have certain intelligent functions, which can analyze the data according to the set rules, and make sound and light alarm in time when abnormality is found. . Intelligent precision power distribution cabinets can provide early warning signals of equipment failures and improve management efficiency. In addition to displaying the collected data, some manufacturers also store the circuit diagram and fault log information of the power distribution cabinet in the local control system of the intelligent precision power distribution cabinet, which is convenient for users to check during maintenance.
The above is the user's analysis of the functional requirements of intelligent precision power distribution cabinet products, but the current intelligent precision power distribution cabinet products on the market are not the same as UPS products, and basically form a standardized configuration. Instead, manufacturers provide customized power distribution cabinets according to the needs of users and combined with the characteristics of their own products. Some products provide some of the features described above, while others provide others.