An Experimental Study on Specifications of Instantaneous Voltage Drop and Over Voltage Withstand for 400VDC Class ICT Equipment

Abstract

The experiments were conducted to verify the impact on the healthy system by the short-circuit accident in the 400VDC power supply system, which is expected to be introuced in the data center and communication building. Along with the short-circuit current breaking, transiently voltage fluctuation occurs. By comparing the existing standards of ICT equipment and result of the experiment, the wiring conditions that enable the ICT equipment to continue the operation during the fluctuation were derived. In addition, taking into account of the actual design of the wiring, specifications of instantaneous voltage drop and over voltage withstand for 400VDC class ICT equipment should have was newly derived.