... to measure the rated frequency50Hz and power loss in electrified wire netting. The meter has novel design,rational structure and features ... ,220V, 230V, 240V, 380V2. Reference frequency: 50Hz or 60Hz3. Wire code: 2 wire, 3 wire, 4 wire4. Precision class: class 1.0, class 2 ... , reactive meter(5) Electronic meter, mechanical meter(6) Modular DIN Rail type meter, Round meter7. May select 5 kinds of cases ...