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[China]
Trade Verify
Address: No.270, Huangjinkou 3rd Village, Hanyang District, Wuhan City, Hubei Province, China
Contact name:Ada Yang
WUHAN RADARKING ELECTRONICS CORP. |
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Single Phase LoRaWAN Smart Electric Meter with Remote Meter Reading Function
Product Overview:
DDS155 series BR (LoRaWAN) single phase 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 sends data to corresponding
gateway through LoRaWAN 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.
Product Parameters:
Technical Data :
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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.
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
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, in which 7 & 8 as measure pulse output.v
LoRaWAN communication interface:
Using LoRaWAN communication for meter reading and parameter
setting. When meter reading, remote meter data transmission
software provided by our company can be used for meter reading and
parameter setting. 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).
