The Huawei SMU02B is a carrier-grade intelligent site monitoring unit designed for -48V DC telecom power systems, providing unified coordination and monitoring for rectifier modules, battery energy storage, power distribution, and site environmental sensors.
Need to confirm a model, specification, or project configuration? Our team can follow up by email or phone.
Architecturally, the SMU02B functions as the central supervisory and intelligence hub within Huawei power shelves (such as TP482000B, ETP48200, and ETP48100 series). It employs an isolated dual-bus structure: an internal high-speed CAN bus dedicated to real-time control, voltage regulation, and active load sharing of switched-mode rectifiers, alongside RS485 ports for external AC/DC distribution units, energy meters, and lithium Battery Management Systems (BMS). The controller features dedicated optocoupler-isolated digital alarm inputs/outputs, a hardware watchdog, and non-volatile flash memory for comprehensive historical event logging.
Eliminates network downtime and DC bus instability caused by controller failures or maintenance events via seamless hot-swap capability without power interruption. It actively prevents battery thermal runaway, overcharging, and undercharging through algorithmic health tracking and temperature compensation, while mitigating expensive on-site maintenance dispatches through rich remote out-of-band telemetry.
Telecommunication macro base stations, enterprise DC microgrids, outdoor power cabinets, edge computing nodes, and hybrid renewable/grid power installations requiring continuous -48V DC monitoring and automated energy dispatching.
| Key specifications | Value |
|---|---|
| System Nominal Voltage | 48V DC |
| Supported Protocols | SNMP, HTTPS, NetEco, Modbus |
| Display Interface | LCD Screen with Multi-Language Graphical UI |
| Communication Interfaces | RS485, CAN, FE (Fast Ethernet), USB |
| Operating Temperature Range | -40°C ~ +75°C |
| Hot-Swappable Support | Yes (Live Hot-Pluggable / Plug-and-Play without Power Interruption) |
| Non-Volatile Log Capacity | 10,000+ Cyclic Event Records |
| Unit Power Consumption | < 8W (Ultra-Low Standby Design) |
| Industrial EMC Level | EN 55032 Class A / IEC 61000-4 Level 4 |
| Relative Humidity Tolerance | 5% to 95% RH (Non-Condensing) |
Huawei
Operating with ultra-low power consumption and natural convection passive cooling, the PMU11A features industrial-grade EMC immunity and redundant isolated communication buses. Designed for wide temperature operation from -20°C to +65°C, it delivers uninterrupted mission-critical telemetry with live hot-pluggable serviceability.
Featuring a fanless, natural convection cooling architecture, the SCC800-B1 integrates an industrial-grade ARM processor with a real-time OS. It delivers comprehensive protocol interworking across RS485, CAN, Ethernet, and digital inputs, seamlessly interfacing with Huawei NetEco and third-party SNMP/Modbus management platforms with carrier-grade 99.999% availability.
Engineered with a robust microprocessor control topology, live hot-pluggability, and an industrial operating range of -20°C to +70°C, the SMU01B coordinates rectifier autonomous load sharing, controls intelligent battery charge/discharge cycles, and interfaces with remote network management systems via CAN, RS232, and RS485.
Featuring ultra-high energy efficiency, intelligent digital control, and comprehensive electrical protection, Huawei SMU01C delivers uninterrupted 24/7 power and communication stability.
