1) D86 Three-phase In-build Watt-hour Meter 2)Output:3000pcs/day 3)CE,CB,ISO9001,14001, ... the rated frequency 50Hzand power loss of active and reactive energy meter.Function and features2.1 Sub-closed iron core2.2 The ... to assure the magnetic line stably and reliably.2.3 Meter bearing has three kinds, may select dual jewel, magnetic thrust ... voltage transformer D86 Three-phase In-build Watt-hour Meter