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
Ultrasonic sealing prevents unauthorized cover opening and internal circuit tampering to ensure stable operation and reduce utility revenue loss.
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 |