抑制±400V直流电源线电弧的方法.pdf

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1、Suppressing arcs on Suppressing arcs on 400V DC power lines400V DC power linesD D-REXREXCorporationCorporationInterpreterInterpreterMIYAZAKI KenzoTANAKA KieMURA FumioCEOD-REX CorporationMURA FumioCTOD-REX CorporationSuppressing arcs on 400V DC power linesADOPTION OF OCP-RECOGNIZED EQUIPMENT&FACILITI

2、ESMIYAZAKI KenzoOutline 54321Arc Protection TechnologyElectric shock protection technologyProduct/Facility InfoSafety Technology AchievementsOverviewVoltage bandsMurata Manufacturing Co.,LtdIn Japan,a 400V DC data center equipped with an arc protection circuit and a shock-prevention earth fault dete

3、ctor has been operating without any trouble for over 12 years.DC400V input centralized power supply with built-in arc protection.Overview（Achievements from 12 years ago）Service begins in 2013Overview（Achievements from 8 years ago）Solar powerDC Server Power Company(AC)BatteryPriorityPriorityPriorityL

4、ike a river flowinguncontrollably!A large-scale power outage occurred in Hokkaido,Japan.BlackoutSeptember 6,2018Solar panel 200kWNon-grid connectedDC SystemThis facility continued to operate during the blackout.Overview（HVDC12V system block diagram）By reducing the number of power supply conversion s

5、tages and improving conversion efficiency,the system becomes simpler,significantly improving the reliability of data centers.Customer feedbackDC above 60V is dangerousNeeded arc-suppressing breakers and switchesHave to suppress arcing in case of disconnectionInexpensive DC protection products needed

6、 Inexpensive arc deterrent technology Inexpensive electric shock protection technologyFew devices operate on DC,such as serversDC linkage with renewable energy such as solar etc.DC linkage with lighting equipment etc.Linkage with mobility such as EV chargersSafety Technology Achievments（Movie）CLICKH