China Nb-Iot Single Phase Energy Meter Wireless Smart Electricity Meter

NB-IoT Single Phase Two Wires Energy Meter / Wireless Smart Electricity Meter

Description:
DDS155 Single phase two wire electric meter is a kind of fully digitized energy meter which adopts the SOC high-density V9821S chip. Besides measure active energy, it also has function for online power display, smart anti-tamper, overload control, remote meter reading and etc. It transmits the data through NB-IoT wireless network. It has advantages in high accuracy, low power consumption, and good stability that can be widely used for the single phase alternating current in city, rural areas or factory enterprises, etc.

Main Function:
(1) Adopt SOC singlechip V9821S, enhanced 8052MCU core, energy measurement, integrated analog front end, RTC module, LCD driver, Flash, accurate measurement and active energy display.
(2) Remote ON/OFF control: according to power usage, can send power off command from main station, cut off user's load circuit. Or send power on command to connect user's load circuit.
(3) With NB-IoT wireless network to transmit data, automatically upload data, default 10 mins as period to upload data (this period can be set). The data including: total active energy, positive/reverse active power, voltage, current, power, grid frequency, power factor, and meter operation status word 3.
(4) It has a power-off protection function of over 125% of the maximum power (But for the meter of max current 80A, it will trip under 85A), and the power supply is automatically restored after 3-5 minutes.
(5) Compatible with communication protocol DL/T645-2007.
(6) RS485 port(Optional)
(7) Wireless communication, automatically networking, easy to install.

Specification:
(1) Standard: IEC62053-21, IEC62052-11, DL/T645-2007
(2) Rated voltage: 220V
(3) Working voltage: 80~120% (rated voltage)
(4) Current: 5(40)A, 5(60)A, 5(80)A
(5) Accuracy: Class 1.0, 2.0
(6) Rated frequency: 50Hz/60Hz
(7) Pulse constant: 1200imp/kWh, 800imp/kWh
(8) Overall Power Consumption: <1.0W
(9) Starting current: ≤0.004 Ib
(10) Overall dimensions: 154mmx110mmx60mm
(11) Weight: 0.5kg
(12) Operating life: >10 years
(13) Normal working temperature: -25ºC~ +55ºC
Limited working temperature: -45ºC~ +70ºC
Relative humidity: <=85%
Composition Theory:
The voltage/current sampling circuit samples the voltage of the power grid and the current flowing through the electric meter, sampled voltage and current signals are multiplied to obtain a power value, and then integrated according to time to obtain electric energy. Smart energy meter measure the energy through output CF pulse counting, after electric meter corrects the error, only the CF pulse is counted to obtain the electric energy which is saved by the storage. The microprocessor simultaneously performs the functions of displaying and exchanging information with external device. Its principle block diagram is shown in Figure 1.

Figure 1

Operation, Debug and Installation:
1)No need for extra operation and debug after leaving factory, can be in normal use since finished installation by professional person.
2)Before installation, please check manufacture's seal is in good condition.
3)Meter should be installed indoor or on the fire-proof wall outdoor, the height is about 1.8m, no corrosive gas in the air.
4)Meter should follow the connection diagram, using copper wire or copper terminal clamp for input.
5)Main terminal connection
Figure 2
6) Main and auxiliary terminal connection
Main terminal connection follows Figure 2, 1 as L In, 2 as L Out, 3 as N In, 4 as N Out.
There are 4 auxiliary terminals on the top of main terminal; 7 & 8 as measure pulse output; 11 & 12 is RS485 wiring terminal.

Display Description:
After power on, the LCD screen in full display for 3 seconds, then for current active energy, current active power in alternate display. Figure 3 is the full LCD display, and Figure 4 is LED instruction.
Figure 4
LED Instruction
Online: Keep on means already in network, flash means not in network;
Trip: Keep on means power off, no light means power on;
Pulse: Flash when measuring active energy, no light means no measurement.

NB-IoT Communication Interface:
Using NB-IoT communication for meter reading and parameter setting. When meter reading. It is also possible to design a software and hardware system that fully complies with the protocol requirements for meter reading and parameter setting according to the power industry standard DL/T 645-2007 (supporting part of the communication protocol).

Carriage and storage:
Our products should be packaged well when being transported. And the products should not be shaken or hit when being transported and unpacked. The carriage and storage should correspond with GB/T15464-1995 "General packing technical conditions of instruments and meters" Inventory and storage should be put on the bracket under the original package, and the stacked height can't exceed 5 layers. The storage place will be clean and the environment temperature will not more than from -40ºC to +70ºC, relative humidity not more than 95% and without corrosive gas and mildew in the air.

Dimension(154mmx110mmx60mm):
The installation dimensions of the meter are shown in Figure 5. The upper part of the meter has hook screw holes, which are fixed by M4 hook screws. The two mounting holes on the lower part of the meter are fixed to the terminal board with M4x10 ordinary screws.

Company Introduction:
Wuhan Radarking Electronics Corp. is a modern share enterprises which focusing on the smart Internet of things(IOT) /smart grid energy consumption sensor/intelligent electric safety integrated solution. It established in 2002(former name: Wuhan Radarking Co.,Ltd.)and went public on January 27, 2015 with the stock abbreviation RADARKING and stock number 831722. It owns the independent R&D center and factory which is the key recommended high-tech enterprises in Wuhan city.
It mainly R&D, manufacture and sell the integrated solution of smart Internet of things(IOT) energy consumption sensor/smart grid energy consumption sensor/energy consumption information acquisition and transmission(Collector, Concentrator, Communication Module), smart electric meter, smart water meter, "RDK" energy Internet of Things(IOT) intelligent energy safety integrated solution, digital campus energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter energy consumption acquisition(meter reading) charging management integrated solution, 4-in-1 Meter/All-in-One Card cloud computing total charging management integrated solution, energy consumption monitoring and analysis integrated solution, mobile phone APP(Energy Consumption, Fast E Top Up).
Principle:
It pursues "Military Academy, Military Morality, Character, Integrity"business philosophy. According to the " Success once at a time, Advance and reliable, Customer satisfaction, Continuous improvement" quality policy, produce the military high standard products depend on the talent and technology advantages. By military character, do the man first and then work, and provide the high quality products and favorable service to the domestic and overseas clients. With the high quality products and favorable service, it has won the good reputation from clients and won the large market share. (The group users has more than 3000).

Management:
We have a high efficiency, innovative, serious management team, and the factory has already passed ISO9001-2008 QMS, and ISO14001-2004 environment management system. It has not any batch quality problem since establishment. AQSIQ( State Quality Inspection Administration) take the spot checking of our electric meter during 2009-2016, and all the meter passed the inspection. Fully proved that the production is according to our quality management system, and the product quality is stable and reliable.
Oversea Market:
Quality product performance and good reputation, our products are not only successful sales in China, but also have been exported to more than 100 countries and regions in the world, including: Mongolia, Malaysia, Bangladesh, Germany, Italy, Russia, Brazil , India, the United Arab Emirates, Saudi Arabia and other countries, the products are subject to a great welcome and praise.
FAQ:
Q1: Are you the factory?
A. Yes. We are factory.Wuhan Radarking Electrinics Corp. is the professional manufacturer of the high tech products with strong R&D capabilities. We are one of the few manufacturers in Hubei province whose annual production of electronic meters and water meters can be up to 6000000 sets. We have our own brand "RADARKING", also welcome the OEM/ODM.
Q2: Are you able to supply technical drawings and data sheets of the products?
A: Yes we can supply upon customer's request, please contact our sales.
Q3: Do we need an expert for the installation of your product?
A: No, it is not complicated to conduct the installation, we can help to instruct the installation as well.
Q4: What is your discount policy?
A: We will give discount according to the different Qty, delivery/payment terms etc, please contact our sales about it.
Q5. What is your quality control procedures?
A. Radarking get the strictly control of quality,which begin with material purchase and carry through to the end of the production process by ISO9001.Before shipping,welcome the examination of goods.

Q6. Are there any special requirements for OEM purchases?
A.Yes.We requires proof of trademark registration in order to print or emboss your trademark onto the product or packaging.