Overview
The UNP234 is a new-generation three-phase smart prepaid meter of the Tiangong series, fully compliant with the latest IEC/EN 2020 standards. It features four-quadrant high-precision metering for import and export active, reactive and apparent energy, 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 for smart metering applications in residences, commercial stores, apartments and small business scenarios.
Highlight
Dual Plug-in Modules
The left plug-in communication modules supports G3-PLC/BPLC/RF/Wi-SUN/Hybrid, while the right one is optional GPRS/2G/3G/4G/5G.
Ultrasonic Sealed Housing
Ultrasonic sealing prevents unauthorized cover opening and internal circuit tampering to ensure stable operation and reduce utility revenue loss.
Expandable Split CIU
Built-in keypad enables local data querying and top up, and expandable with split CIU enables indoor remote interaction at home without touching the meter.
Technical Specification
| Meter model | UNP234 |
| Operating Voltage | 2*230/400V，2*220/380V，2*240/415V |
| 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 | 3P4W |
| Accuracy Class | Active: CL 1.0 (IEC62053-21:2020), CL B (EN50470-3:2022) Reactive: CL 2.0 (IEC62053-23:2020) |
| Communication interface | Optical port/MC171/RS485/Mbus GPRS/4G/G3-PLC/BPLC/RF/Hybrid/Wi-SUN |
| Wiring Connection | L1L1L2L2L3L3NN or L1L2L3NNL3L2L1 |
| Temperature Range: | -40 °C ~ +70 °C |
| Meter lifetime | ≥15years |