Model DTSY2788 and DSSY2788 Electronic Three-Phase Prepaid Electric Energy Meters are new types of IC card-based prepaid electric energy meters with multiple functions including electric energy measurement, load control, and user information management. They are ideal products for reforming the electricity management system, commercializing electric energy, solving difficulties in fee collection, and regulating grid load conditions.
This series of electronic three-phase electric energy meters supports two connection methods: direct connection or connection via current transformers.
All performance indicators of the product comply with the full technical requirements for electronic three-phase prepaid electric energy meters specified in the standards GB/T 17215.321-2008 Class 1 and Class 2 Static Alternating Current Active Watt-Hour Meters and GB/T 18460.3-2001.
Technical Functions
◆ Measures three – phase active electrical energy, no calibration required for long – term operation.
◆ Powered by three – phase power supply. If one line (any one of the three lines of a three – phase three – wire watt – hour meter) or two lines (any two of the four lines of a three – phase four – wire watt – hour meter) is powered off, the metering accuracy will not be affected.
◆ With electrical energy test signal output.
◆ One meter (household) with one card, featuring good anti – counterfeiting property.
◆ When the remaining electricity is equal to the alarm electricity, the alarm light stays on to remind the user to purchase electricity in time.
◆ When the remaining electricity is 0, it trips to cut off the power.
◆ Automatically cuts off the power when overloaded, facilitating the power department to implement capacity increase.
◆ With data write – back function, facilitating the management of the power department.
◆ The load switch is installed outside the meter, and the inside of the meter adopts relay control (contact capacity is 250VAC/5A).
◆ The supporting IC card electricity vending management system has complete functions such as electricity vending management and electricity consumption supervision.
◆ RS485 expandable.
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| Technical Index | Data |
| Rated voltage | 3×220/380, 3×230/240, 3×240/415V |
| Working voltage range | 0.8~1.2Un |
| Rated current | 1.5(6)A,10(40)A ,15(60)A, 10(60)A , 20(80)A, 20(100)A, or special required |
| Frequency | 50Hz or 60Hz |
| Connection mode | CT type or Direct type |
| Display | LCD |
| Accuracy class | 1 |
| Power consumption | <1W/8VA each phase |
| Start current | 0.004Ib |
| AC voltage withstand | 4000V/25mA for 60 sec |
| Impulse voltage | 6kV 1.2μs waveform |
| IP grade | IP51 |
| Constant | 800~6400 imp/kWh |
| Pulse output | Passive pulse, pulse width is 80+5 ms |
| Executive standard | IEC61036 ，IEC62053-21 ，IEC62052-11 |
| Work temperature | -30℃~70℃ |
| Outline dimension L×M×H | 228×144×72mm |
| Weight | Approx 1.3kg |
