Certificates
Overview
The UND212 is a new-generation single-phase DIN-rail smart prepaid meter of the Tiangong series with compact and modular design, fully compliant with the latest IEC/EN 2020 standards. It features dual sensor and dual relay for phase and neutral wires, comes with the split UIU and supports multiple anti-tampering detection as well as prepaid/postpaid mode switching.
Seamlessly integrates with Goldcard Power’s AMI+Vending system and third-party management systems, it is well-suited for centralized distribution and smart metering in residences, commercial stores, apartments and small business scenarios.
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Plug-in Module
The plug-in communication module supports 2G, 3G, 4G, NB-IoT, RF, Wi-SUN, G3-PLC, BPLC and hybrid, adapting to diverse network environments and project needs.
LCD Display and Button
Equipped with a clear LCD display and physical button to enable direct consumption Readout, supporting transparent billing and consumption traceability without additional tools.
Ultra-Compact DIN-Rail Design
Small size and standard DIN-rail design allow for quick, tool-free mounting in distribution cabinets, ideal for high-density and centralized metering applications.
Technical Specification
| Meter model | UND212 |
| Operating Voltage | 230V |
| Voltage range | 0.4 Un ~ 1.2 Un |
| Current rating | 5(60)A，5(80)A，5(100)A |
| Starting current | 0.4% of Ib |
| Frequency | 50/60Hz ±5% |
| Degree of protection | IP54 |
| Insulating class | Class II |
| Connection type | 1P2W |
| Accuracy Class | Active: CL 1.0 (IEC62053-21:2020), CL B (EN50470-3:2022) Reactive: CL 2.0 (IEC62053-23:2020) (Optional) |
| Communication interface | Optical port/MC171/RS485 GPRS/4G/G3-PLC/BPLC/RF/Hybrid/Wi-SUN |
| Wiring Connection | LNNL in same horizontal line |
| Temperature Range: | -40 °C ~ +70 °C |
| Meter lifetime | ≥15years |