China Unicom was formed on the basis of the original China Netcom and the original China Unicom in 2009. It is the only telecom operator in China that is listed in New York, Hong Kong and Shanghai. As of the end of 2008, the asset size reached 526.66 billion yuan. In order to better utilize resources to expand business opportunities, China Unicom will provide more comprehensive and comprehensive services to the public while improving its competitiveness. The original IDC data room will be comprehensively upgraded and upgraded, and the UPS will be protected in the equipment room. Uninterruptible power supply equipment is purchased by public bidding.
In this bidding, Eaton, as the world's second largest manufacturer of uninterruptible power supply and control systems, once again won the favor of the bidders with its excellent products, considerate service and perfect solutions, and successfully won the order of the project.
two. Data Room UPS System Design Principles1. Safe and stable new uninterruptible power system
The Eaton 9395 features a double-conversion in-line design that provides pure, uninterrupted, high-quality power protection for the most critical sensitive loads to ensure the safest, most reliable operation of the load and extend their useful life. The data center continues to have a stable power supply.
2. Green
At the beginning of the design, Eaton 9395 introduced the use of sustainable materials and high-efficiency manufacturing processes to minimize carbon emissions in the market, saving approximately 80% of energy requirements in use and maintenance alone; and new transformerless designs By reducing raw materials such as steel and copper, reducing harmful substances, reducing the unit weight of products, reducing carbon emissions by 20% during transportation, and reducing transportation costs.
3. Convenient installation and testing
Simple and easy to use is an important reference standard for China Unicom Beijing Company for UPS products. The 9395's lightweight and compact body is easy to transport and install; the innate load test function avoids the need to rent expensive dummy loads for full load testing and simplifies the test procedure.
4. Flexible capacity upgrade and expansion capabilities
Large-scale projects require flexible extensions to adapt to them. The unique modular assembly structure and intelligent capacity-increasing structure design of the Eaton 9395 make the UPS N+1 parallel redundancy and capacity expansion project extremely simple, fully satisfying the Heilongjiang National Taxation Bureau's future capacity upgrade, backup time extension, etc. Changing needs.
three. System ConfigurationIn the design of the uninterruptible power supply system of the telecommunications room, in order to ensure that the important load will not be caused by the failure of the UPS, battery, input and output distribution system, the dual bus UPS power supply system is the best solution.
The high reliability of the dual bus power supply system is reflected in the following aspects:
1. Ensure that an uninterrupted, highly reliable power supply is available to all loads in the event of a UPS failure.
2. The dual bus power supply system brings significant improvement in load power reliability. From input power distribution to output power distribution, backup redundancy is used in each link to eliminate any single fault on the system, which is safe and reliable for telecommunications. The operation provides a full range of protection and reliability of the load to the load of 99.9999% or even higher.
For dual input loads, dual-supply power is used, and the input of each critical device comes from two bus distribution switches.
---- For a single input load, the power on the double bus is converted into a single power supply through the STS automatic electronic switch, and then the precision power is supplied to the load. The function completed by the STS is that when one input power fails, the STS can switch to another input within 6ms to ensure uninterrupted operation of key equipment.
3. As the telecom service grows and the load device is expanded, it only needs to expand the existing UPS system to save the customer's secondary investment cost.
For each system, a corresponding number of maintenance-free lead-acid batteries are configured according to the backup time requirements. The 9395 UPS system can automatically charge, discharge and perform performance tests on the battery pack periodically.
The input power distribution cabinet and the output power distribution cabinet are respectively configured at the input end and the output end of the UPS, and corresponding voltage, current and other parameter detecting devices are arranged in the power distribution cabinet.
Dual bus power system configuration system diagram
four. FeaturesThe 9395 series is the fifth-generation high-power UPS power supply from Eaton's Axel, with a stand-alone capacity from 225KVA to 1100KVA. It is jointly developed by Eaton Axel's plants in the United States and Finland and is a UPS product designated by the US military.
1. Full IGBT design, input power factor 0.99, input THDI "3%
2. Output power factor up to 0.9
3. The highest overall machine efficiency in the world, even 95% at half load
4.ABM (Advance Battery Management):
5.DSP digital control technology
6. Integration, generalization and modular design of rectifier and inverter
7. Hot-Sync thermal synchronization parallel patented technology, modular redundant parallel design
8. Air duct cooling system, redundant fan, fan speed detection technology
As a wearing part, the fan occupies a very important position in various parts of the UPS. Once the fan fails, the UPS main unit is light due to the high temperature, which causes the aging performance of the component to decrease, and the load will be stopped due to overheating. Electricity. The 9395 adopts the air passage type cooling method. The wind is forward and the wind is out. The fan is located in the middle of the UPS and is blown outward. The UPS air inlet is provided with a dust filter to avoid dust from being drawn into the UPS. The Axel 9395 uses Hall sensors for real-time detection of fan speed. The UPS's LCD panel monitors each fan's fault and provides an audible and visual alarm through the monitoring system.
9. Redundant logic power supply design
The logic power supply is the core control power supply of the UPS. Once the fault occurs, the UPS rectifier inverter circuit will not work. Therefore, each 9395 UPS adopts two redundant logic power boards, and adopts three-way power-receiving mode. The board receives power from the mains input, bypass input, and inverter output. This redundant design ensures that the host control circuitry will work properly under all conditions.
10. Easy-Load load test patent technology
When the UPS system is installed, users usually need to rent expensive dummy loads to perform power-on experiments on the system, which will generate a lot of heat dissipation and power consumption. The 9395 uses the patented EASY-LOAD load test technology.
This is a completely green test, no external load box, no need for cable installation, the UPS can generate a full load inside, can fully test all power components and connectors in the UPS, test UPS , Bypass, cable, heating on the switchgear, and can perform full-load battery discharge test.
11. Concise and convenient operation and maintenance
The 9395 comes standard with an incoming and a lower incoming line, eliminating the need for additional access cabinets, reliable walls or side-by-side placement.
Pre-built cable connections eliminate the need for complex secondary cabling during capacity expansion, saving users significant engineering overhead.
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