Summarization:
DTS949/DSS949 three-phase active electronic meter uses large-scaled integrated circuit, SMT techniques and world-famous branded long-life components. It can measure the 50Hz~60Hz three-phase AC active consumption accurately. It meets the standard of GB/T17215-2002. It has good reliability, anti-tampering, wide load, low consumption, high accuracy, and good anti-disturbance performance.

Main function and characteristic:
1) Can judge the consumption direction and accumulate the reverse consumption to total consumption
2) Has separate LED photo-emitter and electrical impulse outputs to show power consumption
3) Three phase power supply, one phase (for 3-phase 3-wire meter) and one or two-phase (for 3-phase 4-wire meter) is powered off, the measuring accuracy will not be affected
4) Has indication for power off
5) Good reliability, anti-tampering, wide load, low consumption, high accuracy, good anti-disturbance performance and working for long time without calibration

Technical parameter:
1) Accuracy class: class 1 or class 2
2) Voltage circuit consumption: ≤1.5W, 6VA
3) Reference voltage: 3 x 110V, 3 x 380V (for 3P 3W meter), 3 x 57.7/110V, 3 x 220/380V (for 3P 4W meter)
4) Basic (max. rated) current: 3 x 1.5 (6) A, 3 x 5 (20) A, 5 (30) A, 3 x 10 (40) A, 3 x 10 (60) A, 3 x 15 (60) A, 3 x 20 (80) A, 3 x 20 (100) A
5) Limited working temperature: -30 ~ +65°C
6) Relative humidity: ≤85%
7) Other technical parameter: impulse width 80ms±20ms