The Journal of the Institute of Electrical Installation Engineers of Japan
Online ISSN : 2188-6946
Print ISSN : 0910-0350
ISSN-L : 0910-0350
Volume 33 , Issue 12
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  • Takashi Tsuchida, Masaki Tsuneoka
    2013 Volume 33 Issue 12 Pages 932-940
    Published: 2013
    Released: September 08, 2014
    For a stable operation of information and telecommunications devices,many data centers have mesh grounding systems called signal reference grids (SRG). While the purpose of an SRG is to provide the devices with an equipotential surface,the frequency range is limited up to megahertz. Due to the increase of operating speed of switching circuits,frequency components above the frequency are involved. The authors measured the frequency characteristics of the SRG. It is cleared from the results that some resonances are observed in a frequency range above 10 MHz, and the SRG cannot provide the devices with an equipotential surface at the resonance frequencies. A grounding method with matching resistors for the SRG is proposed to improve the characteristics.
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