Metering function: provided with the metering function for forward and reverse energy as well as combined active energy, with the combined active energy in selective combination of forward and reverse active energy.
Time metering and billing function: supporting 4 tariffs for ultra-peak, peak, normal and trough periods, with 2 yearly time zones over the year, and at least 14 time frames within 24 hours.
Settlement function: with maximum 3 settlement points within one month for settlement, and a logging of the history data for 12 recent settlement points at the maximum (including the forward and reverse active energy at respective tariff).
Measurement functions: capable of measurements for voltage, current (including the neutral tive power and power factor and other electricity system parameters.
Event logging functions: provided with the logging functions for the time of the events as programming, roof cover opening, power failure, tripping and others, as well as the meter status as the events occur; provided with freeze and alarm functions.
User interface: adopting large Chinese demonstrate LCD, with rich prompt signs; provided with backlight metering and inquiry function; switchable display contents to be operated through buttons, and flexible configurations on the display items via telecommunication.
Telecommunication module configuration: one channel for RS485 and far infrared communication interfaces respectively, with sical communication ports mutually independent.
Cost control function: the meter is supporting telecommunication-based remote switch on/off without IC card socket.
| Items | Technical requirements |
| Reference voltage | 220V |
| Operating voltage range |  Specified operating range: 90%Un ～110%Un;   Extended operating range: 80%Un ～115%Un; |
| Current Spec. | Instrument transformer connection type: 1.5(6)A ; Direct connection: 5(40)A,10(60)A, 15(60)A, 20(80)A 10(100)A,30(100)AÂ Â Â Â |
| Accuracy Class | Active power, Class II |
| Operating temperature | Specified operation temperature range: -25℃～+60℃; Ultimate operation temperature range: -40℃～+70℃; |
| Relative humidity: | ≤95% (without condensation) |
| Frequency range: | (50±2.5)Hz |
| Static power consumption | ＜1.5W，10VA |
| MTTF | ≥10 years |
| Design service life | 10 years |
| Overall dimensions | L×W× H:160mm×112mm×58mm |
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