The HUAWEI CHINT DDSU666-H 24h Consumption Analyser Meter for zero discharge with Toroidal is a necessary accessory to configure the injection to 0 of the HUAWEI SUN2000 Inverter of our website. We have two models, the three-phase model and the single-phase model by means of which you can measure and block the current discharged to the grid. The CHINT DDSU666-H Energy Meter is a digital meter for 24-hour monitoring of electricity consumption. This analyzer is able to measure the consumption of the home or industry by constantly adapting the power delivered by the photovoltaic system to the consumption of the installation. It is a necessary accessory if we wish to configure the self-consumption photovoltaic installation so that it does not feed energy into the electricity grid. The meter knows the energy demand of the home. For example, if the house consumes 3 kW and the solar plant is generating 2 kW, the meter will only consume 1 kW from the meter. On the other hand, if there are surp