A link that cannot be ignored in the production process of smart meters- Zhejiang Yongtailong Electronic Co., Ltd

With the progress of society, the electric energy meter has developed from an inductive electric energy meter (mechanical electric energy meter) to an electronic electric energy meter and is constantly being upgraded iteratively. Ordinary electronic watt-hour meters, anti-stealing watt-hour meters, prepaid watt-hour meters (IC card meters, STS watt-hour meters), AMR centralized reading watt-hour meters, multi-function watt-hour meters (rate, demand, frozen power, event alarm, etc.), AMI smart meter, etc.

YTL DEM4A 1000imp/kvarh DIN rail 3P 4W Multi Tariff AMI Watt hour meter

absolute value metering, forward and reverse metering can be configured.power metering for homes, factories, equipment, car charging piles, photovoltaic power generation projects, etc.

The number of AMI smart meters is a market trend, and the demand is increasing year by year. The smart meter integrates two-way power metering, load control, multiple application functions, and two-way communication (RS485, LoRa, NB-IoT, GPRS, PLC, RF, etc.). Energy meters have more and more functions, and the degree of intelligence is getting higher and higher. When designing products, more and more devices and chips are used, and the degree of integration is getting higher and higher. This makes it necessary to consider anti-static issues in product design and production processes.

Static electricity is everywhere in our daily life, and the transfer of energy through friction, induction, conduction, peeling, etc. will be accompanied by the generation of static electricity. Static electricity is very harmful to electronic products, which will cause chip dielectric breakdown, core wire fusing, increased leakage current, accelerated aging, and changes in electrical performance parameters. The damage of static electricity to sensitive devices is divided into hard breakdown: one-time causing dielectric breakdown, burning or permanent failure of components; soft breakdown: causing performance degradation or parameter index decline of the device, which has potential and slow failure. The species is more harmful. According to statistics, if the damage rate of the chip is more than 1‰ without abnormality, it can be suspected that it is caused by electrostatic discharge.

Static electricity cannot be controlled and cannot be prevented, so we can only take care of it for protection. We control the ambient temperature and humidity in the electric energy meter production workshop (temperature: 20°C ~ 26°C; humidity: 45%RH ~ 70%RH) to reduce the generation of static electricity; workers on the electric energy meter assembly line wear anti-static bracelets and wear anti-static Clothes, anti-static shoes, and anti-static hats; anti-static turnover boxes are used for storing meter modules, and anti-static tablecloths are laid on the assembly line. Before entering the workshop, static electricity must be discharged from the human body; designated personnel are arranged to conduct regular inspections on the anti-static infrastructure , to ensure the anti-static effect.

The quality assurance of electric energy meters cannot be achieved at one point. It is a systematic project, from R&D and design, functional performance testing, production process, quality control, etc. As a professional electric energy meter manufacturer, electrostatic protection is a link that cannot be ignored in the production process of electronic electric energy meters, and is one of the foundations for the quality assurance of electric energy meters.