smart meter can adapt various applications- Zhejiang Yongtailong Electronic Co., Ltd

Smart meter plays a great role in global energy control, which can effectively control the power consumption of power terminals, cut peaks and fill valleys to reduce energy consumption; The two-way remote communication of smart meters shows real-time data upload, and the timely issuance of system platform instructions to the meter can reduce a large number of labor. As an energy meter export enterprise, our electricity meter business is exported to more than 60 countries and regions, and according to the order volume of different types of products in different countries, we can also clearly see that the number of orders for smart meters is increasing year by year. The detailed requirements for smart meters vary from country to country, but the basic functions are similar; For African countries, the main promotion is smart prepaid energy meters.

Today, we will introduce you to a series of smart meter, covering all applications in the smart grid. Basic functions: various power parameter measurement, period tariff, load profile, event alarm, self-diagnosis, load control, firmware remote upgrade, etc.

Product type	Single phase smart meter	Three phase smart meter
type	single phase two wire Direct type	Three phase four wire Direct type	Three phase four wire CT type	Three phase four wire CT/VT type	Three phase three wire CT/VT type
voltage	230V	3×230/400V	3×230/400V	3×66.4/115V	3×110V
current	5（45）A\5（100）A	3×5（45）A\ 3×5（100）A	3×5（6）A	3×5（6）A	3×5（6）A
Frequency	50Hz	50Hz	50Hz	50Hz	50Hz
Accuracy class	active energy:1.0 reactive energy:2.0	active energy:1.0 reactive energy:2.0	active energy:0.5 reactive energy:2.0	active energy:0.5 reactive energy:2.0	active energy:0.5 reactive energy:2.0
power consumption	0.5W/5VA	0.5W/5VA	0.5W/5VA	0.5W/5VA	0.5W/5VA
Communications	IR、RS485、PLC、Zigbee、GPRS
Protocol	DLMS/COSEM
Protection grade	IP54
Standards compliance	IEC62052-11, IEC62053-21, IEC62053-22,IEC62053-23

This series of smart meters is at the high voltage end and low voltage end of power metering; Residential users and industrial users have corresponding products for supporting measurement, and the product specifications are complete. The communication of smart meters adopts modular design, supports hot swapping (the meter can also be maintained or replaced by the communication module in the working state of power-on), and when the communication encounters an abnormality, the communication module can be replaced or replaced with a module with another communication mode to deal with the solution. When using GPRS, Zigbee and other communication methods, the antenna can be externally installed to improve the reliability of communication, and the SMA base for antenna connection is designed with isolation, and there is no personal safety when the human body is touched during installation.

The clock battery of this series of smart meters is also externally replaceable to prevent the accuracy of the clock from being affected by battery exhaustion, and the contact point of battery installation adopts an isolated design, and there is no personal safety when the human body touches it during installation; After battery replacement, the smart meter automatically synchronizes the clock.

The installation of the communication module and the battery is protected by a cover plate, and the cover will be sealed after installation, and the cover cannot be opened without damaging the lead seal. In addition, after the cover is opened, the smart meter will immediately detect and record and send an alarm to the system platform to notify the relevant management personnel to deal with it.

The use of smart meters has been in large-scale use for more than 10 years, and problems and shortcomings have been found in this practical application process, and the detailed function requirements of smart meters have been further optimized and improved. The iteration of smart meter communication methods is particularly obvious, different communication methods can be applied to different application scenarios, and with the advancement of communication technology, communication reliability has also been greatly improved; The modular, field-replaceable design of the communication part can well follow the technological progress of communication.