Three-phase IoT Smart electricity meter(Type DTZY2397)

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.It is suitable for three-phase power consumption occasions.

THE KEY TECHNICAL INDEXES

MAJOR FUNCTION

1.Metering positive and negative active power, positive and negative direction active power, 1-4 quadrant reactive power, and ABC phase separation active power and reactive power 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.

2.It can measure, store and display the operating parameters and states of ABC such as each phase voltage, current, total and three-phase active reactive power, three-phase active reactive power, total and three-phase power factor and frequency of the current electricity meter. And it has overload protection function.

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.

4.Record the maximum demand and occurrence time of forward active, reverse active, positive reactive and reverse active power in that month.

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

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

7.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.

8.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).

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

OPERATION DECLARATION

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.

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

·Trip indicator light: yellow. Often out indicates the relay closed state.Often bright indicates the relay off state.

·LoRaWAN module status indicator: green. Often bright indicates that is online, flashing is going online.

Wiring diagram

Weak current terminal wiring diagram

NO: Tritrip trip    N: The trip is public    NC: Tritrip is often closed

T +: High multifunction T-: Low multifunction

A: The RS485 A line B: The RS485 B line P: Active pulse Q: reactive pulse

- -: Pulse Commons

Wiring diagram of the three-phase four-wire mutual inductance table

Wiring diagram of three-phase four-wire straight-through meter table

Installation drawing (unit: mm)

Installation

ive 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.