DTSF309 (accuracy 1.0) three-phase four-wire multi-rate watt-hour meter is a full electronic energy meter, for the reference frequency of 50HZ three-phase four-wire system were measured tip, peak, Pinggu and total electricity.
Products meet GB / T15284 and GB / T17215 standards.
1、 the clock error: less than 0.5s
2、 power-down state to maintain the current clock 8Ma
3、 to allow continuous power outage time: 3 years
4、 time switching error: less than 1Ms
5、 infrared communication distance: 5m
6、 RS-485 communication distance: 1000m
7、 to allow the number of RS-485 terminals: 1-32 months
| Model and name | Accuracy (level) | Reference voltage (V) | Calibration current (A) | Wiring | Packing size(mm) | Quantity (only) | 
| DTSF309 Three-phase four-wire multiple rates Meter | 1.0 2.0 | 3×220/380 | 1.5(6) | Mutual inductance | 
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| 5(20),10(40) 15(60),20(80),30(100) | Direct type | 
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| DTSF309 Three-phase four-wire multiple rates Energy Meter (with RS485) | 1.0 2.0 | 3×220/380 | 1.5(6) | Mutual inductance | 
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| 5(20),10(40) 15(60),20(80),30(100) | Direct type | 
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