... 2.long life using 3.No-combustible plastic material three phase energy meter1.good quality2.long life using3.No-combustible plastic materialApplicationThree ... , DT862, DT864, DS862 and DS864 series are the three-phase active energy watt -hour meters, and DX862, DX864, DX865 and DX863 series are ... 2kV and 45~65Hz at AC voltage for 1min. three phase energy meter