Đồng hồ đo điện và công suất Contrel EMM-4h
The digital multifunction meters of the EMM series allow the measure of the main electrical parameters of the electrical energy distribution networks. The local visualisation of more than 30 measured parameters is made with the usage of 4 red LED displays, in order to guarantee a reading clear and simultaneous of different measures. Intuitive selection of measures, that have to be visualised with a LED signal, completes a very simple frontal panel, but also supplies a lot of information.
INPUTS
The EMMs have measuring inputs for three currents andthree voltages in order to be adapted for their use in one-phase networks, on three-phase networks in devices with 4 and 3 wires without neutral or neutral not distributed. The instrumentsare fully auto-range with the measuring unit indication in Kilo or Mega by corresponding indicative LED.