Jiangji offers a comprehensive range including single-phase and three-phase smart meters for both State Grid (SGCC) and Southern Grid (CSG) standards, data concentrators, and EV charging equipment.
Are your products certified to international standards?+
Yes. Our products are certified to ISO 9001, ISO 14001, ISO 45001, IATF 16949, GJB 9001C, and various other national and international standards. We have also passed German PTB certification for export products.
What communication protocols do your smart meters support?+
Our smart meters support RS485, PLC (Power Line Communication), GPRS/4G wireless, and NB-IoT communication protocols, ensuring compatibility with various AMR and AMI systems.
Can your EV chargers support multiple charging standards?+
Yes. Our EV charging equipment supports GB/T (Chinese national standard), CCS, and CHAdeMO protocols, with power outputs ranging from 7kW AC to 350kW DC fast charging.
Do you offer customized product solutions?+
Yes. We provide OEM/ODM services and can customize products to meet specific technical requirements, branding needs, or regional standards. Please contact our sales team for details.
What is the minimum order quantity?+
Minimum order quantities vary by product type. For standard products, MOQ is typically 100 units. For customized products, please discuss with our sales team based on your specific requirements.
How do I install and configure a smart meter?+
Each product comes with a detailed installation manual. Our technical team also provides on-site installation support and remote guidance. Training programs are available for your technical staff.
What is the accuracy class of your energy meters?+
Our single-phase meters are Class 1 (1.0%) and three-phase meters are available in Class 0.5S and Class 1, complying with IEC 62053 and GB/T 17215 standards.
How do I update the firmware on smart meters?+
Firmware updates can be performed remotely via the AMR system using our secure OTA (Over-The-Air) update mechanism, or locally via the optical port using our configuration tool.
What is the operating temperature range?+
Standard products operate from -25°C to +70°C. Extended temperature range versions (-40°C to +85°C) are available for harsh environment applications.
How do I troubleshoot communication failures?+
Check physical connections, verify baud rate and protocol settings, confirm power supply, and review error codes in the meter display. Our technical support team is available 24/7 for assistance.
What software tools are available for configuration?+
We provide a dedicated configuration software suite supporting parameter setting, data readout, event log review, and firmware management. Contact us to obtain the latest version.
What is the warranty period for your products?+
Standard warranty is 2 years from the date of delivery. Extended warranty options of up to 5 years are available. EV charging equipment carries a 3-year standard warranty.
How do I submit a warranty claim?+
Contact our service hotline at 400-900-7526 or email jiangji@sz-jj.com with your product serial number, purchase date, and description of the issue. Our team will respond within 24 hours.
Do you provide spare parts?+
Yes. We maintain a comprehensive spare parts inventory for all current and legacy products. Parts can be ordered through our service centers or directly from headquarters.
How quickly can on-site service be arranged?+
For urgent issues, we guarantee on-site response within 24 hours in major cities. Our 35 nationwide service centers ensure rapid local support across China.
Can products be repaired after the warranty period?+
Yes. We offer paid repair services for out-of-warranty products. We also provide maintenance contracts that cover regular inspections, priority service, and discounted repair rates.
How do I return a defective product?+
Contact our after-sales team to obtain a Return Merchandise Authorization (RMA) number. Products should be securely packaged with the RMA number clearly marked. We cover return shipping for warranty claims.
