Function and solution
- distribution cabinet total input voltage, current, frequency, power, power monitoring;
- distribution cabinet various voltage and current, frequency, power, power monitoring;
Switch state detection of each switch;
Pre set the load capacity of the various alarm, overload alarm, overpressure alarm;
With sound and light alarm and remote monitoring interface;
- 7 inch full color display and management of harmonic content, energy management, historical trends, load curve;
Surge and lightning strike (optional); over current protection.
(1) intelligent power distribution cabinet can collect more electrical data
In addition to ordinary cabinets similar by electricity meter, voltage and current distribution outside the acquisition circuit of the intelligent power distribution cabinet can collect quality data, such as harmonic electric power distribution cabinet circuit on-off state and the current state, grounding and lightning protection equipment status data. The data acquisition, in addition to the ordinary electric meter and the main voltage, current transformer, but also need to add more sensors, transmitter equipment for data collection.
The intelligent power distribution cabinet data usually have voltage, line current, harmonic, sub circuit on-off current circuit, earthing and lightning protection equipment, some need to increase the collection distribution cabinet temperature information collection, fault warning distribution cabinet. The display of the collected data can be locally displayed by the electric quantity meter and the special display screen, and can be sent to the monitoring system via the RS485 and the Ethernet interface.
(2) intelligent power distribution cabinet should have the convenience of the sub circuit maintenance function
Because a lot of data center equipment requirements IT 7 * 24 hours of operation, so the proposed special maintenance requirements of intelligent power distribution cabinet, such as the maintenance and replacement of miniature circuit breakers, line circuit breaker cannot disconnect upstream, avoid the influence of parallel on the bus on the other circuit, which requires electrical components used in intelligent power distribution cabinet to support the maintenance of heat. The current market is the method to use a special bus copper bar, but also the use of ordinary bus copper bar in general, micro fracture increased hot plug base solution, many electrical components manufacturers have to provide solutions for this class.
(3) intelligent power distribution cabinets need to be able to control and reduce the load brought about by the harmonic currents
As IT devices are inductive load, to the upper reaches of the distribution system brings a lot of harmonic *, these harmonics affect the stable operation of the data center power distribution system and the life of electrical equipment. So intelligent power distribution cabinets need to increase with the ability to control and reduce the IT device to bring the harmonic function.
The intelligent power distribution cabinet adopts harmonic control mode, which is connected in series with isolated transformer in power distribution line. In the increase of the isolation transformer, significantly reduce the IT load on the power grid to bring the common mode of.
(4) intelligent power distribution cabinet can maintain zero ground voltage, in order to meet the requirements of IT equipment to zero ground voltage difference
In the data center room, zero voltage difference is too high, will bring a lot of trouble to the operation of the computer room IT equipment. GB GB/T50174-2008 to the room distribution of the zero voltage requirement, so the need to take measures in the intelligent power distribution cabinet.
In order to reduce the zero ground voltage of the IT device, in the smart power distribution cabinet installation, usually used in the isolation transformer terminal for once again, the IT device three-phase imbalance caused by the neutral line current into the earth.
(5) intelligent power distribution cabinet can easily adjust the balance of the three-phase current
A lot of IT equipment for single-phase power, will cause the imbalance of three-phase current, to make full use of energy, reduce the waste of electric energy, management needs to adjust the balance of three-phase current. Intelligent power distribution cabinet can provide convenient adjustment of three-phase current balance function, it can effectively improve the maintenance efficiency.
Miniature circuit breaker products at present some manufacturers introduced, combined with the CAN bus copper bar, a convenient way through adjusting the three-phase picks balance. However, if the distribution cabinet using ordinary micro circuit breakers, you need to access the IT equipment at the same time to select the appropriate phase, once the access to the IT load after adjustment, it will have an impact on the load operation.
(6) intelligent power distribution cabinet to install lightning protection device
In order to protect the IT equipment, intelligent power distribution cabinets are equipped with lightning protection device. According to the IEEE1100 specification that common lightning protection equipment protection level can not fully protect the discharge induced lightning current amplification, with instantaneous burst peak suppression (TVSS) equipment, these devices are used to access and micro fracture in parallel.
(7) intelligent power distribution cabinet to have a more comprehensive local display, and to be able to early warning of equipment failure
A lot of intelligent power distribution cabinet with local display, the touch screen or buttons to query the data collected, and some also have a certain intelligence, can be set according to the rules of data analysis, abnormal timely alarm. Intelligent power distribution cabinet can provide early warning signals of equipment failure, which can improve the efficiency of management. In addition to the data display, there are also manufacturers will power distribution cabinet wiring diagram, fault log information is also stored in the intelligent power distribution cabinet in the local control system, in order to facilitate the user to check the maintenance.
Above is the user of intelligent power distribution cabinet product functional requirements analysis, but the current market intelligent power distribution cabinet products, not like UPS products, basically formed a standardized configuration. But according to the needs of users, combined with the characteristics of their own products, to provide customized distribution cabinets. There are some products that offer some of the functions described above, while others offer other features.
