Smart Substation Terminal (SST)
STTU12-HX01
The China Southern Power Grid (CSG) Smart Substation Terminal (SST) is an intelligent data acquisition and control endpoint installed at public distribution substations. It delivers robust functionalities for data collection, equipment monitoring, energy metering, power consumption management, and remote O&M, thereby supporting the evolving requirements of power marketing, distribution, and emerging business sectors.
Product Description
The China Southern Power Grid (CSG) Smart Substation Terminal (STTU12-HX01) serves as a core device driving the digital transformation of transformer zones for next-generation power systems. It integrates electrical parameter monitoring, equipment status awareness, load control, edge computing, and multi-mode communication features, fully complying with the Q/CSG enterprise standards. Engineered with a modular hardware architecture and the “State Grid Core” self-controllable chips, the terminal is built to withstand harsh outdoor wide-temperature environments ranging from -40°C to +70°C. With a Mean Time Between Failures (MTBF) exceeding 30,000 hours and a service life of over 10 years, it enables transparent “Transformer-Line-User” full-link data management, successfully supporting smart inspection/maintenance alongside granular operation on the consumer side.
Product Advantages
Smart Substation Terminal (SST)
STTU12-HX01
| Technical Specifications | Specifications/Requirements |
| Accuracy Class | Active Energy 0.5/1.0 Reactive Energy 2.0 |
| Reference Voltage | 3P4W: 3×220V/380V |
| Rated Current | 0.01-0.05(10)A/0.1-0.5(80)A (subject to actual terminal) |
| Rated Frequency | 50Hz |
| Outline Dimensions | 290mm×180mm×103mm |
| Operating Voltage | 0.9Un～1.1Un |
| Limit Voltage Range | 0.7Un～1.3Un |
| Total Consumption | Apparent power ≤25VA Current circuit power (single phase): ≤5W and 8VA Voltage circuit power (single phase): ≤1VA |
| Clock Parameters | ≤0.5 s/d |
| Clock Battery Lifespan | 10 years |
| Continuous Runtime | ≥5 years |
| Data Retention after Power Failure | ≥10 years |
| Operating Temp. Range | 25℃～55℃ |
| Limit Temp. Range | -30℃～75℃ |
| Storage & Operating Humidity | ≤95% |
| Master Station Specifications | Enterprise standard Compatible with China Southern Power Grid Metering Automation Terminal Uplink Communication Specification, DL/T634.5-101, DL/T634.5-104, and MOT protocol |
| Meter Specifications | DL/T 645-1997, DL/T 645-2007 |
| Panel Display | 240*160 dot matrix monochrome LCD, LED backlight |
| Keyboard | 6 keys: Up, Down, Left, Right, Cancel, Confirm |
| Data Transmission | Standard: 4G full-netcom wireless communication module and Ethernet port Optional: 5G module |
| Local Communication Interfaces | 1 USB port 1 routing Ethernet port 1 hardware interface 1 connection port |
| Remote Upgrade | Supports resume from breakpoint Supports remote upgrade via Ethernet, wireless public network, etc. |
| Storage Capacity | ≥8GB |
| Operating Memory | ≥1GB |
| Reliability | MTBF≥7.6×10⁴h |
| Supported Functional Modules | Remote communication module Local communication modules (RS-485, M-Bus, CAN, carrier communication) Communication module Control module Branch monitoring module Analog acquisition module, etc. |