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Advanced Single Phase Energy Meter IoT Based Prepaid Metering Solutions

Advanced IoT-based Electricity Metering Solution for Smart Homes and Buildings

Type DDZY2397 (LoRaWAN)

Single-phase IOT smart energy meter

Electricity meter operating instruction

1. OVERVIEW

The intelligent electricity meter has the functions of electric energy measurement, power parameter measurement, time-sharing measurement, real-time freezing, on-off control, LoRaWAN and RS485 communication etc, which is suitable for single-phase power consumption occasions.

2. THE MAJOR TECHNICAL INDEXES

Qualification	Single phase direct table
Standards	IEC62053-21, IEC62052-11, DL/T645-2007
Rated voltage un	220V
Operating voltage range	80% Un ～115% Un
Rated current limit ib	5A
Maximum current: Imax	80A
Starting current	0.4% Ib
Power grid frequency	50Hz
Frequency range	±2%
Active measurement accuracy	Class B / 1
Reactive measurement accuracy	Class 2
Active pulse constant	1600(imp/kWh)
Reactive pulse constant	1600(imp/kvarh)
Clock precision	±0.5S/d (23℃)
Normal operating temperature range	-25℃～+55℃
Extreme operating temperature range	-40℃～+70℃
Transportation and storage temperature range	-40℃～+70℃
Power dissipation	＜1.5W ,10VA
The time that the blackout clock preserves	＞24h
The RS485 interface	The default 2400bps, 1200bps, 2400bps, 4800bps, and 9600bps are optional
LoraWan frequency	864-865MHz

3. THE PRINCIPLE FUNCTIONS

3.1. It has measure forward and reverse active energy functions. Electrical energy should be accumulated and stored separately for electric energy and total electrical energy at each time period such as tips, peaks, flats, and valleys. And it can also store and display the power of the previous 12 months.

3.2. It can measure,store and display the voltage, current, power, power factor, frequency and other operating parameters and status of the current electricity meter. And it has overload protection function.

3.3. There are two sets of rates (sharp, peak, flat, valley) and periods that can be programmed arbitrarily, and another set of rates and periods can be start to used at the set time point. Each set of rate time periods can be set with at least 2 time zones for a year. At least 14 time periods can be set within 24 hours. The minimum time period interval is 15 minutes. The time period can be set across zero points.

3.4. It has freezing functions such as instantaneous freezing, regular freezing, daily freezing, agreed freezing and hour freezing.

3.5. It has the function of event recording such as zero clearing, programming, proofread, power down, pulling and closing the brake, etc.

3.6. Remote disconnection and power transmission function. Power off command is issued through communication interface such as RS485 to cut off the user's load loop; Or issue a power transmission instruction to turn on the user load loop.

3.7. Active upload / bidirectional transparent transmission function. Actively upload the data to the corresponding platform through the LoRaWAN wireless network, with a default interval of 4 hours (settable).

3.8. After the meter is powered on and the LoRaWAN module is connected to the network, the meter is automatically calibrated.

4. OPERATION DECLARATION

4.1. Electricity meter display

LCD full-screen display schematic diagram (as shown above)

4.2. Electricity meter is displayed by LCD

The specific display items are listed as follows:

No.	LCD figure	explain
1		Character that can indicate that: Current, previous month, the previous twelve months cumulative total electricity consumption and electricity consumption at various rates.
2		Data display and the corresponding unit symbol
3		1) In communication 2) Reverse power indication 3) ① ② represents periods sets 1 and 2 4) Undervoltage indication of the battery or supercapacitor voltage 5) Allow the programming status indication 6) Three times of password verification error indication
4	T1 T2 T3 T4	Indicates current rate status (peak valley)
5	----ON ----OFF	----ON is relay state on ----OFF is relay state off

4.3. Status indicator lamp

The electricity meter uses a bright, long-life LED as a pulse indicator light.

It has active power pulse indicator light: red, usually go out, flashing when measuring active power.

LoRaWAN/NB-I o T/C at.1 Module status indicator: green. Always on indicates online, and flashing indicates going online.

5. APPEARANCE DESCRIPTION AND INSTALLATION WIRING

5.1. Installation drawing (unit: mm)

5.2. Wiring diagram

Direct access

Of these, 5,6 are reactive pulse output. 7,8 are active pulse output. 9,10 are multifunctional clock output. And 11,12 are RS485 output.

5.3. Installation

Live installation of wiring is strictly prohibited!

The electricity meter shall be installed indoors as far as possible. Special instrument box protection shall be used for outdoor installation. The installation bottom plate shall be fixed on the wall with strong fire resistance and not easy to vibration. There must be no corrosive gases in the surrounding air where the meter is installed. Avoid dust, salt spray, etc.

When using the electricity meter, the wiring must be conducted strictly according to the wiring diagram in the tail cover of the meter. It is recommended to use copper wire for the lead connected to the terminal seat. The screws of the fixed lead in the terminal seat should be tightened to avoid burning the electricity meter due to bad contact and heating.

6. TRANSPORTATION AND STORAGE

Ammeters must be transported and stored under the original packaging conditions. Products shall not be severely impacted during transportation and unpacking, and shall be transported and stored according to GB / T 25480-2010 Basic Environmental Conditions for Instrument Transportation and Storage and Test Methods as stipulated in 2010. The products should be stored in the warehouse and placed on the platform frame. The stacking height shall not exceed five layers. No corrosive gases shall be present in the stored environment.

7. WARRANTY PERIOD AND AFTER-SALES SERVICE

If the user complies with the transportation, storage and installation operation specifications, and the lead seal of the manufacturer is still complete.If there is a quality problem, our company is responsible for free repair or replacement within 18 months from the date of delivery the electricity meter.

During the whole life cycle of the products, our company implements "three guarantees" for all electricity meter products, providing necessary maintenance and services. Providing equipment wiring diagram and necessary technical documents and drawings. According to the requirements of users, provide necessary training for maintenance personnel and operators. Providing training materials, and update the software regularly and provide free upgrade.

After receiving the service request of the product user, our company will respond within 12 hours.

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Categories	Single Phase Energy Meter
Brand Name:	TimeWave
Model Number:	DDZY2397
Certification:	ISO/IEC 20000-1, ISO/IEC 27001,I SO/IEC 9001
Place of Origin:	Hubei ,China
MOQ:	Negotiable
Price:	EXW US$ 50-100/set
Payment Terms:	T/T, L/C
Supply Ability:	2000 set/week
Delivery Time:	3-5 weeks after receive the payment
Packaging Details:	20pcs/carton
Name:	Smart energy meter
Customization:	OEM/ODM
Phase:	Single/Three
Standards:	IEC62053-21, DL/T645-2007
Power grid frequency:	50Hz
Rated voltage un:	220V/3*220v/380v
Operating voltage:	80% Un ～ 115% Un
Rated current limit ib:	5A
Maximum current: Imax:	80A/100A
Starting current:	0.4% Ib
Connectivity Protocol:	NB-iot/LoraWan
Product:	Single/Three phases smart energy meter