AC voltage measuring device DQ series

frequencyACmechanical

DQ wattmeters are used for active power measurement. There are versions for single-phase AC and three-phase with 3 or 4 wires for balanced and unbalanced loads. The frequency range is 50 – 60 Hz. Ferrodynamic system, with one measuring element for DQ/1w, DQ/1d and DQ/1; two elements for DQ/2 (aron system), and 2 1/2 elements for DQ/3. Eddy-current damping, with pivot suspension and spring-loaded jewel bearings for vibration and shock resistance. Consumption The consumption per current path is < 0,2 VA The current consumption in the voltage path is < 3,9 VA Scales 90º scale, practically linear. Coarse-fine division- The full-scale value must be between 0.2 and 2 times rated apparent power, which is calculated as follows: • For single-phase AC: S(W) = Primary voltage (V) x Primary current (A) • For three-phase AC: S(W) = √3x Primary line-to-line voltage (V) x Primary current (A) Unless otherwise indicated, the full-scale value is calculated by rounding S down to one of the following standard value: 1 - 1,2 - 1, 5 - 2 - 2,5 3 - 4 - 5 - 6 - 7,5 - 8 or their decimal multiples. . On request: Zero center. Por example, -100-0-100kW Overload capacity according to DIN 43780 Overload capacity continuously 1,2 ln