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Single Phase Two Wire Prepaid Energy Meter Smart Electric Meter with Multi Function
DDSY series electronic type single-phase prepaid meters are new IC card type prepaid electric energy meters with multiple functions of electric energy and load control and user location management, etc., researched and developed based on our company's electronic type single-phase electric energy meter of excellent performance.
The meter is an ideal product under the current reform of
electricity system to achieve electric energy commercialization,
solve the difficulty in charging and adjust the grid load state.
All performance indicators of this product conform to GB/T17215
321-2008 Electricity Metering Equipment(a.c.) -Particular
Requirements-Part 21:Static Meters for Active Energy (classes 1 and
2) and all the technical requirements for electronic type
single-phase prepaid electric energy meters in GB/T18460-2001 and
IECl036-2002 technical standards.
Function and features
Metering active electric energy, without the need of tuning for
long-term work;
One meter (household) one card, multiple encryption, with good
anti-counterfeiting;
When the remaining electric quantity is equal to the alarm
quantity, the indicator lights to remind users of timely purchase;
Trip and power off when the remaining electric quantity is 0;
Prevent electricity larceny and record illegal electricity
consumption information automatically;
Overload automatic power-off facilitates the power sector to
implement capacity increase;
Large-capacity magnetic latching relay, with low power consumption
and high reliability;
With data write-back function, it is easy for the management of
power sector;
As long life and high reliability electronic components are
selected for all the components inside the meter, the meter has;
characteristics of long life and high reliability;
The supporting IC card electricity sale management system has the
functions of complete electricity sale management, electricity
consumption monitoring, etc.;
1. Main Features:
1.1. Standard IC card hardware-based cryptographic for prepayment, the
power supply department receives the electric charge in advance by
means of vending the power utilization card (IC card), and users
should buy first for power utilization.
1.2. It integrates full-digital metering with using electricity power
consuming display, prepayment control, reading card and intelligent
anti-power stolen, ect., has high reliability.
1.3. Function of overload protection. When the load exceeds the preset
maximum current for a continuous period, it would cut off the power
supply circuit automatically, nixie tube would display warning
symbol flickeringly, and the watt-hour meter would switch off
automatically after a certain period of time delay.
1.4. The power utilization IC card is treated with software and
hardware-based cryptographic, guaranteeing safety, correctness and
reliability of data. Through special design, the IC card records
the residual and cumulated electric quantity of meter as well as
information about electricity-stolen if there is while user inserts
the card.
1.5. Perfect card interface protection circuit, preventing hostile
attack behaviors effectively.
1.6. Display of residual electric quantity, it displays in 6-digit (5
integral numbers, 1 decimal number).
1.7. When the residual electric quantity reaches the prep warning
value, nixietube would display the residual electric quantity,
reminding users to input new electricity purchasing quantity.
1.8. When the residual electric quantity in watt-hour meter remains
zero, the watt-hour meter would trip automatically, and cut off the
power supply, at this moment, users must bring the card and go to
power vending department to purchase electricity (power supply
department could set a certain quantity for overdrawing, insert the
card, users could use a certain quantity of electricity), only when
inserting the card with effective electric quantity into the meter
that it could supply power normally.
1.9. The power would be cut off automatically when the owed electric
quantity reaches a certain degree, input new electricity purchasing
quantity (after deducting the over-consumed electricity), the power
supply would be recovered automatically.
1.10. Application of magnetic latching relay not only improves
reliability of power interruption operation, reduces power
consumption after power off, but also conquers the shortcoming of
relay of contacts adhesion when working for long time at heavy
current.
1.11. When coming across power failure, it would store the data
automatically, and resume data at power recovery.
1.12. Computer, special IC card read-write device and charging
management software form the electricity vending management system.
1.13. Carry out comparative analysis to the recorded information, the
management system is able to list out users suspected of
electricity stealing action for concentrated investigation,
reducing the working capacity of anti-electricity stolen and
electricity stolen investigation.
1.14. If the watt-hour meter is reversed connected, it still is able to
meter correctly.
2. Technical Parameters:
① Applicable standard: IEC 1036, GB/T18460-2001.
② Rated Voltage: 220V, (extreme operating volatge: 70%~190%)
③ Rated Current:5(20)A, 5(40)A,10(40)A, 5(60)A, 10(60)A ,15(60)A ;
④ Rated frequency: 50/60Hz
⑤ Pulse Constant: ,3200,1600,800 imp/kW.h
⑥ .Accuracy Class: 1.0, 2.0;
⑦ Overall Consumption: < 1.3W
⑧ Starting Current: ≤0.4%Ib
⑨ Anti-creeping: logical anti-creeping;
⑩ Data Storage: 10 years even being powered off
⑪ Lifetime: >10 years
⑫ Weights: About 0.6kg
⑬ Dimension: 136mm×109mm×60mm
Rated Current | 5(20),5(30),10(40),15(60),20(80),30(100) |
Rated voltage | 220 or 240 |
Rated frequency | 50 or 60 |
Accuracy | Class 1 or Class 2 |
item | technical parameter |
Precision grade | Active power 1.0 grade,2.0grade |
Reference voltage(Un) | 220V |
Reference current(In) | 5(40)A,10(60)A,20(100)A |
Reference frequency | 50Hz |
Working voltage range | stipulated working voltage range:0.9Un~1.1Un |
Expanded working voltage range:0.8Un~1.2Un | |
Working temperature range | stipulated working voltage range:-25ºC ~+55ºC |
limited working voltage range:-40ºC ~+70ºC | |
Storage and transportation limited temperature range:-40ºC ~+70ºC | |
Power consumption | Voltage circuit:≤2W/5VA;current circuit:≤1VA |