GF312B2 portable three phase reference meter high accuracy 0.02%, with all kinds of optional clamp on ct and smart optical sampler. It can be applied in electrical laboratory or on site. it will be ensured by a combination of measures such as the use of 24bit A/D converter. APPLICATION: Power plant; Electrical laboratory; Energy meter R & D; Watt-hour meter factory; Metrological service center; Electricity power bureau & power company;
