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Since the year 2000, the up to 400 Volt Direct Current (400VDC) powering interface for Telecom and Datacenters equipment has been standardized and industrialized as it brings advantages. Compared to 48 Volt Direct Current power solutions, it uses much less copper and the energy losses in cable are lower. Compared to Alternating Current uninterrupted power supply (UPS) benefits are simplicity higher...
In the past Intelec, many presentations and DC panel have shown the advantage of using 48V DC power supply for Telecom. Reliability, simple scalability, modularity, low cost maintenance, reduced footprint, higher power efficiency than AC back-up architecture, high safety.
400VDC is becoming a new voltage interface for telecommunication buildings and data centers as well as for ICT equipment. 400VDC interface covers applications for up to 400VDC with a typical nominal voltage of 380VDC. Key drivers for utilizing a higher DC voltage are overall efficiency and reliability gains vs present solutions. However, introduction of a new 400VDC interface brings up some questions...
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