Data center precision power distribution cabinet
The point difference between the neutral line and the PE line is called "zero point voltage". When the zero point voltage is higher than the allowable value of electronic information equipment, it will cause hardware failure, burn equipment, cause malfunction of control signals, affect communication quality, delay or prevent normal communication. Therefore, when the neutral voltage does not meet the use requirements of the load, the neutral voltage should generally be less than 2V. Measures should be taken to reduce the neutral voltage. The precision Power distribution cabinet power quality management solution with AMC16MH multi-circuit monitoring device as the monitoring body has a zero point voltage measurement function, which can transmit the monitored neutral voltage value to the security supervision platform server in real time and display it in intuitive data on the interface. Once the neutral voltage value exceeds the limit, the system will automatically pop up an alarm box and trigger an alarm, prompting the administrator to conduct a timely line inspection to protect the safety performance of the precision distribution cabinet.
In order to adapt to the needs of rapid upgrading of IT equipment and IT technology. Modular transformer banks are used in the precision power distribution units of data centers. Each AMC16MH device can measure the parameters of each phase of up to 84 single-phase outgoing line circuits. It can be equipped with 4 transformer banks, each of which can connect 21 single-phase outgoing line circuits. For different IT equipment, transformer banks can be reduced or added at will to meet different customer needs.
In summary, the data center is mainly reflected in how to continuously meet the changing IT load types and load operation levels throughout the life cycle of the data center, so that the entire data center can always maintain efficient and reliable operation from construction to launch, which is a new challenge for the power distribution system of the data center.
Power quality management of precision power distribution cabinet units in data centers
Measure bus voltage of 3-phase incoming lines, 2 three-phase incoming lines and 84 single-phase outgoing lines, 28 three-phase currents, active power, reactive power, active energy, reactive energy, maximum demand, 215 sub-orders and total harmonics, 2 switch outputs, 2 RS485 communications, 2 temperature detections, 4 DI inputs, zero-ground voltage detection, zero-sequence current detection, and leakage current detection.
With the development of data centers, a large number of high-power semiconductor switching devices and various switching power supply products, such as monitors, air conditioners, and energy-saving lamps, are used. Although the harmonic current injected into the power grid by each device in these information technology equipment is not large, the number of these devices is large and the distribution is wide. When used, they have the characteristics of concentration. In certain periods of time, the harmonic problems caused by the harmonic current injected into the power grid are particularly prominent, which not only makes the equipment connected to the power grid unable to work normally, or even causes failures, but also overloads the current on the neutral line of the power supply system, affecting the power transmission of the power supply system. Therefore, the harmonic problem has been highly valued by all relevant parties. AMC16MH has added the function of measuring incoming and outgoing harmonics and total harmonics, and can transmit the monitored harmonic values to the local computer room monitoring and security supervision platform server in real time, and display them in the form of intuitive data on the interface. Once the harmonic value exceeds the limit, the system will automatically pop up an alarm box and trigger an alarm.
