... -voltage electrical network. It suitable for 50Hz and 60Hz three phase AC 35kv, 10kv, 6kv, 3kv power system. High accuracy ... of the electricity sector, enhance supply management.Three-phase four-wire three 3 components high voltage metering box (combined ... Condition of Usea. Ambient Temperature: Highest +45 ,daily average +30 , lowest -45b. Altitude: Not exceed 4000mc. Atmospheric condition: ...