Smart Metering Terminal (SMT)
MT11-HX57/MT12-HX58
The China Southern Power Grid Smart Metering Terminal is a modular intelligent terminal installed in dedicated or public transformer areas. It features energy metering, data collection, distribution transformer monitoring, and power consumption management, supporting multi-object data collection and high-performance computing to facilitate grid operation and maintenance and intelligent power consumption.
Product Description
The Smart Metering Terminal (MT11-HX57/MT12-HX58) is China Southern Power Grid’s next-generation metering automation terminal product. Adhering to the design philosophy of “modular hardware and app-based software”, it coordinates the terminal base unit with external modules to achieve protocol conversion and interconnection between sensing and communication networks, as well as among different types of sensing networks. The terminal features capabilities such as energy metering, power quality monitoring, topology identification, orderly power utilization, renewable energy integration, data acquisition, data processing and storage, and data transmission, satisfying the requirements of marketing, power distribution, and emerging business services.

Product Advantages
Smart Metering Terminal (SMT)
MT11-HX57/MT12-HX58
| Technical Specifications | Specifications/Requirements |
| Accuracy Class | Active Energy Class C, Reactive Energy Class 2 |
| Rated Voltage Un | Three-Phase Three-Wire: 3×100V Three-Phase Four-Wire: 3×220V/380V, 3×57.7V/100V |
| Operating Voltage Range | 0.7Un~1.3Un |
| Rated Current Ib (Maximum Current Imax) | Low Current: 1(10)A High Current: 20(80)A |
| Rated Frequency | 50Hz |
| Allowable Frequency Deviation | -5%~+5% |
| Clock Accuracy | <0.5s/d |
| Operating Temperature Range | -25℃~+75℃ |
| Operating Humidity Range | 10%~100% |
| Meter Protocol | DL/T 645-1997, DL/T 645-2007, etc. |
| Master Station Protocol | China Southern Power Grid Metering Automation Terminal Uplink Communication Protocol |
| Remote Upgrade | Supports breakpoint resume mechanism Supports remote upgrade via Ethernet, wireless public network, etc. |
| Outline Dimensions | 290mm×180mm×103mm |



