The Huawei PMU11A is a carrier-grade power environment and battery data acquisition module engineered for -48V DC telecom power systems. It provides precision analog and digital sampling, leveraging dual CAN bus and RS485 communication interfaces to transmit battery midpoint voltage, charge/discharge currents, ambient metrics, and dry-contact states to the system controller.
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Architecturally, the PMU11A serves as the peripheral data acquisition node within Huawei telecom power enclosures (such as the TP48 series and APM30 cabinets). It integrates multi-channel precision analog-to-digital converters (ADCs), optocoupler-isolated digital inputs (dry contacts), precision NTC temperature sensor front-ends, and galvanically isolated transceivers complying with IEC 60950-1 and ETSI EN 300 386 carrier-grade standards.
It eliminates the risk of catastrophic battery bank thermal runaway, unmonitored cell imbalance, and premature battery degradation by providing real-time data for automated float/boost charge control and temperature compensation, while preventing blind spots caused by unmonitored cabinet doors, flooding, or surge protection failures.
Tailored for Huawei NetEco-managed -48V DC power frameworks, APM30/APM5930 outdoor telecom cabinets, cellular 4G/5G macro and micro base stations, optical transmission nodes, and enterprise remote edge sites.
| Key specifications | Value |
|---|---|
| System Nominal Voltage | 48V DC |
| Communication Interfaces | CAN Bus, RS485 |
| Operating Temperature Range | -40°C ~ +75°C |
| Digital/Dry Contact Inputs | Multiple Optocoupler-Isolated Dry Contact Alarm Inputs |
| Battery Intelligent Management | SOH/SOC Monitoring, Temp Compensation & Multi-level LVD |
| 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
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