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Water and electricity one card RF prepaid electricity meter
1. Overview: DDSY1791 One Card RF Single Phase Prepaid Electric Meter adopts advanced smart card technology and microelectronic metering technology, w
Product details
1. Overview
The DDSY1791 one card RF single-phase prepaid electricity meter adopts advanced smart card technology and microelectronic metering technology, which has the advantages of high accuracy, multiple functions, low power consumption, security and confidentiality, and simple operation. The product complies with the standards of GB/T18460.3-2001 "Prepaid Energy Meters" and GB/T17215.321-2008 "Level 1 and Level 2 Static AC Active Energy Meters".
Main features: Application of computer management, purchasing electricity first and then using it; The maximum operating power can be limited within the rated current range (limited by the power supply department); One meter, one card, dedicated card, no power loss after card loss, can be used after card replacement; Electric cards can transmit data bidirectionally and automatically power off to alert users when purchasing electricity; When the battery level is zero, the power will automatically trip and cut off; And it has certain anti-theft software design, etc.
The product meets all technical requirements of GB/T17215.321-2008 "Level 1 and Level 2 Static AC Active Energy Meters" and GB/T 18460.3-2001 "IC Card Prepaid Electricity Sales System Part 3: Prepaid Energy Meters".
1. Prepaid function: Pay first and then use electricity. Power will be automatically cut off if overdue, and power will be automatically restored after swiping the card again for renewal.
2. Constant display alarm function: Users can set their constant display alarm value. When the remaining battery level is below this value, users will be reminded to purchase electricity in a timely manner.
3. Power outage alarm function: Users can set their power outage alarm value. When the remaining power reaches the power outage alarm value, the electricity meter will automatically shut down. At this time, swiping the card can still power on, reminding users to purchase electricity immediately.
4. Power off function: When the remaining power in the meter is zero, the meter will automatically power off.
5. Dynamic encryption: Using dynamic encryption algorithms, it has strong confidentiality, and the data in the table can be retained for 10 years after power failure.
6. Current limiting power-off: When the current exceeds the set value, the meter will be powered off for protection. When the load decreases, the meter will automatically restore power.
7. Ladder pricing function: Ladder pricing function can be selected, supporting five types of ladder pricing.
3. Specifications, models, and technical parameters:
1. Specification and model
|
Specifications model |
Accuracy level |
Voltage specifications (V) |
Current specification (A) |
|
DDSY6607 |
2.0 |
220 |
5(20)、 10 (40), 20 (80), 15 (60) A |
2. Main technical parameters:
a、 Basic error:
|
load current |
power factor |
Percentage error limit (%) |
|
0.05Ib≤I<0.1Ib |
1.0 |
±1.5 |
|
0.1Ib≤I≤Imax |
±1.0 |
|
|
0.1Ib≤I<0.2Ib |
0.5(lag) 0.8 (lead) |
±1.5 |
|
0.2Ib≤I≤Imax |
±1.0 |
b、 Electrical parameters (reference conditions):
Starting current: 0.4% Ib
Power consumption: Voltage line<1.0W, 3.0VA;
Current line<1.0VA
Stealth: equipped with logic anti creep circuit
Voltage range: 220V ± 10%
Working temperature range:- 25℃~ +55℃
Power failure data storage time>20 years
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