Medium Voltage UPS Systems in High Density AI Data Centers

Using Medium Voltage (MV) with Power Distribution for Industry provides an efficient delivery of High Capacity Power to Manufacturing Facility and Industrial Production Floors. A higher voltage provides a more “efficient” path for “AC Current” to travel to equipment. Large Motors and high inrush starter loads require much more Startup Current, medium voltage power distribution within a plant will provide an efficient capacity of Amperage for this high demand equipment. If production equipment in a Plant operates at lower voltage (LV), the delivery mechanism of higher voltage, closer to the equipment seeking the higher amperage, makes for more capacity available to the loads. This is achieved by the installation of step down function transformers, allowing the medium voltage (MV) to deliver higher capacity amperage “near” the loads. Then step down voltage at or near the equipment to the usable voltage. Benefits of Medium Voltage in a Facility -Higher Amperage Capacity delivered closer to Equipment Seeking Current (Amps). -Less “Current” loss during distribution through plant to various loads. -Lower “Pipe and Wire” costs as higher voltage requires smaller wire size to transmit. -More reliability in overall plant equipment: ie. Affects of power anomalies from lower voltage, sags, surges, failure of Machine Equipment Components. Disadvantages of Medium Voltage in a Facility -Higher cost to Utility for setup -Specialized Maintenance at higher voltage levels -Potential first costs higher for substation and distribution equipment up front, but lower cost of ownership over time. Low Voltage for Industrial Loads Low voltage distribution in a Plant can be installed successfully with a very constant load profile and demand. If there is larger equipment such as motors and processing that cycle on and off with large inrush current demand, this will affect the other areas of the Plant. These “surges” in demand for Current in these high demand inrush devices, can starve or pull down overall voltage in the other areas in the plant electrical distribution, or the entire plant. This will cause Power Supply failures in other equipment which seeks a constant voltage, or will burn components of other equipment due to variable voltage events. Over time this greatly affects a Plant’s Maintenance budget. Benefits of Low Voltage in a Facility -More Familiar Installation and Voltages for most Electrical Contractors. -Immediately available equipment, shorter lead times. -Simpler design and operation of electrical distribution and Electrical One Line. -Less step-down transformers within Facility and Electrical One Line Disadvantages of Low Voltage in a Facility -Exposed to more “Load” created anomalies that may affect other equipment -Limited amperage “Choke Points” for distribution and installation of larger equipment -Current loss from LV distribution through plant. -Susceptible to Inrush Current affect on immediate area or entire facility. -Higher “Pipe and Wire” costs as lower voltage requires higher amperage and larger wiring. Description and Uses of Low (LV) and Medium Voltages (MV) Low Voltage: 1kV - 15kV Typical City Use Power Grid Activities -Residential Use: (120v, 240v) -Commercial Building Use: (120/240v Single/Three Phase, 480v Three Phase) -Manufacturing and Industry: (480v Three Phase) -Localized Utility Distribution: Transformer to Load Medium Voltage: 13.8kV-34.5kV -High Density Data Center Uses -Large Manufacturing, Semiconductor -Motors, Compressors, Large Use Industrial Process -Electrical Utility Distribution, Long and Short Line distances High Voltage: 35kV and larger, 138kV -Long Transmission Lines Substation supply lines from Power Utility Sources -Industrial Processing Facilities, Steel, Mining. -Large transit requirements such as Railways and Commuter trains See your Voltage Correction Specialist to discuss Medium Voltage Power Distribution Options and Corrective Measures for your Facility Power Issues.

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