一、Product Summary
Dear users, thank you for using our single-phase meter. Please read this instruction manual carefully before using it, so that you can easily use our products.
Zhongyi single-phase fee-controlled smart electric energy meter is a new generation of electric energy metering product developed and produced by our company according to the relevant technical specifications of smart electric meters of State Grid Corporation. This product adopts application-specific large-scale integrated circuit and SMT production process, and has the functions of electric energy metering, data processing, real-time monitoring, automatic control, information interaction and so on.
GB/T 17215.301-2007 "Special Requirements for Multi-function Watt-hour Meter"
Q/GDW 1354-2013 Functional Specification for Smart Watt-hour Meter
Q/GDW 1354-2013 Functional Specification for Smart Watt-hour Meter
Q/GDW 1364-2013 Technical Specification for Single-phase Smart Watt-hour Meter
Q/GDW 1365-2013 Technical Specification for Safety Certification of Information Exchange of Smart Watt-hour Meter
二、Working Principle
When the electric energy meter works, the voltage and current are sampled by the sampling circuit respectively, then sent to the electric energy metering application specific integrated circuit for processing, and converted into digital signals and sent to the microprocessor for calculation. The microprocessor in the figure is used for time-sharing charging and processing various input and output data. Time-sharing active electric energy metering is completed by collecting electric energy pulses of the electric energy metering application specific integrated circuit. Various data are displayed as required, communicated and transmitted through carrier wave, infrared or 485 interface, and various data are recorded and stored.
三、Function List
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Serial Number |
Functions |
Details |
|
Communication module |
Communication mode |
Supported Band |
|
M66 (GPRS Communications) |
850/900/1800/1900MHz |
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BC26 (NB Communications) |
B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B66 |
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|
BC35G (NB Communications) |
B1 @ H-FDD: 2100 MHz B3 @ H-FDD: 1800 MHz B8 @ H-FDD: 900 MHz B5 @ H-FDD: 850 MHz B20 @ H-FDD: 800 MHz B28 @ H-FDD: 700 MHz |
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|
BG96 (NB/GPRS/CATM Communications) |
Cat M1/Cat NB1: LTE FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/ B19/B20/B26/B28 LTE TDD: B39 (For Cat M1 Only) EGPRS: 850/900/1800/1900MHz BG96-M Cat M1: LTE FDD: B1/B2/B3/B4/B5/B8/B12/B13/B18/ B19/B20/B26/B28 LTE TDD: B39 |
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BC66 (NB Communications) |
B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B26*/B28/B66 |
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|
Lorawan Newsletter |
Supports CLASSA, CLASSB, CLASSC modes |
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RS485 communication |
With RS485 interface |
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|
WiFi communication |
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Display Module |
The watt-hour meter uses LCD to display information; The visual size of LCD screen is 85mm (length) × 50mm (width); The specific size of each character shall conform to the provisions of Appendix J. -The performance of normal temperature LCD should not be lower than that of FSTN type material, and its working temperature range is 25 ℃ ~ + 80 ℃; -The performance of low-temperature LCD should not be lower than that of HTN type material, and its working temperature range is 40 ℃ ~ + 70 ℃; -LCD shall have backlight function, and the backlight color shall be white; -LCD shall have high contrast; -LCD shall have a wide viewing angle, i.e. the line of sight is perpendicular to the front of the LCD screen, and the upper and lower viewing angles shall be ≥ ± 60; -The polarizer of LCD shall have anti-ultraviolet function; -See FIG. 1 for the contents displayed by LCD; See Table 4 for the description of each figure and symbol in the figure; Different types of watt-hour meters can select corresponding display contents as required. |
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Indicator light |
Watt-hour meters use high-brightness, long-life LED as indicator lights. The layout position of each indicator lamp shall refer to the appearance diagram of the watt-hour meter in the appendix, and the requirements are as follows: -Active energy pulse indicator: red; It goes out at ordinary times and flashes when measuring active electric energy. -Reactive energy pulse indicator: red; It goes out at ordinary times and flashes when measuring reactive energy. -Trip indicator: yellow; It turns off at ordinary times and turns on when the load switch is turned off. |
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Electricity acquisition module |
TTL serial communication collects the electric quantity of the base plate, using CJ188 protocol |
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Trigger Escalation |
Use magnet to trigger 1-6s to report accumulated flow and equipment status |
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四、Performance characteristics
1. Metering: It has the function of time-sharing metering, and the active electric energy is accumulated according to the corresponding time period, and the total, peak, peak, flat and valley electric energy is stored
2. Prepayment: The watt-hour meter can sell electricity through the remote 485 or LORAWAN/NB module. When the electricity quantity is lower than the alarm value, the user is reminded to purchase electricity in a display mode; It has the function of overdraft limit.
3. Measurement and monitoring: It can measure, record and display the voltage, current, power factor and other operating parameters of the current watt-hour meter. The measurement error shall not exceed ± 1%.
4. Timing function: Built-in hardware clock circuit with temperature compensation function is adopted, which has automatic conversion functions of calendar, timing and leap year
五、Technical Parameters
|
Voltage Input |
Rated voltage |
220V |
|
Reference frequency |
50Hz |
|
|
Voltage Line Power Dissipation |
≤ 1. 5W and 10VA (static) |
|
|
Current Input |
Input Current |
5 (20) A, 5 (60) A, 10 (40) A, 15 (60) A |
|
Starting current |
≤ 0.004 Ib |
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|
Current Line Power Dissipation |
< 1VA |
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|
Measurement accuracy |
Accuracy |
Level 1/Level 2 |
|
Daily timing error |
0.5 sec/day |
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|
Pulse |
Pulse constant |
1200 (imp/kWh) |
|
Additional Parameters |
Normal operating temperature |
-25 ℃ ~ + 60 ℃ |
|
Storage and working humidity |
≤ 85% |
|
|
Battery capacity |
≥ 1200 mAh |
|
|
Rate Period |
Number of rates |
4 |
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Number of periods |
8 |
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Communication Support |
Lorawan/NBIOT/GPRS/RS485 |
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六、Product structure and size
| Reference voltage | 220v |
| Reference current | 5A,10A,20A,40A,60A |
| Reference frequency | 50Hz |
| Normal operating temperature | -25℃～+60℃ |
| Communication support | Lorawan/NBIOT/GPRS/RS485 |
