ups ИБП datacenter rapid papid7 инвертор data center battery data centre ЦОД цод ибп tia 942 ДБН rapid papid 7 apsx 3024 серверная apsx 6048 акустика ДСТУ iec 62040-3:1997 projects project management pmbok iot аккумуляторные батареи АКБ sodium nickel chloride batteries salt batteries kirchhoff's voltage law (2nd law) kirchhoff's current law (1st law) ohm’s law victron energy uptime institute toshiba scib infrastructure engineering 9sx ups eaton 0ю4кв фэп
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