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NetSure 731 A91-S2 Vertiv/Emerson 48V DC Power System
Ultra-Wide Three-Phase Input: Compatible with 380-415V three-phase AC, operating stably at 80~305V AC; works well with mains power and generator power supplies.
Flexible Power & Current: Adjustable power from 3kW to 31.5kW and maximum 540A output current, flexible for different high-load equipment combinations.
High Efficiency & ECO Mode: Rectifier peak efficiency reaches 96.3%, with built-in ECO energy-saving mode and module sleep function to cut idle power consumption.
Non-Destructive Hot Swap: Rectifier and monitoring modules support hot plugging; replacement takes less than 1 minute without system shutdown.
Full-Range Protection & Lightning Defense: AC, DC and signal multi-level lightning protection (≥20kA DC); equipped with overvoltage, overcurrent, short-circuit and overtemperature dual protection.
Walk-In Soft Start: Prevents surge impact on front-end transformers and generators during startup to protect the whole power grid.
Intelligent Battery Management: Supports automatic battery testing, midpoint monitoring, temperature compensation and floating/equalizing charge switching to extend battery life.
Rich Communication Interfaces: Integrated RS232, RS485, Ethernet and USB ports, supporting remote monitoring, parameter configuration and firmware upgrade.
Full-Front Maintenance: Standard 19-inch 8U structure, all components accessible from the front for easy installation and daily maintenance.
Wide Environmental Adaptation: Works reliably at -40℃ ~ +65℃ (derating above 45℃), suitable for indoor machine rooms and harsh outdoor sites.
4G/5G macro base stations, remote cell sites and outdoor communication cabinets
Central telecom machine rooms and backbone transmission equipment rooms
Large FTTX broadband access network power distribution systems
Data center DC power supply and battery backup projects
Industrial communication equipment and high-load network frame systems
| Category | Item | Parameter |
|---|---|---|
| Basic Info | Product Type | 8U Embedded Subrack DC Power System |
| Model | NetSure 731 A91-S2 | |
| Brand | Vertiv (Emerson) | |
| System Power | 3kW ~ 31.5kW | |
| Max DC Current | 540A | |
| AC Input | Rated Voltage | 380~415V Three-phase AC |
| Working Range | 80 ~ 305V AC | |
| Input Frequency | 45 ~ 65Hz | |
| Power Factor | ≥ 0.99 | |
| AC Surge Protection | Class C/D | |
| DC Output | Nominal Voltage | 48V DC (Adjustable: -43.2 ~ -57.6V DC) |
| Output Type | Single | |
| DC Surge Protection | ≥ 20kA (8/20μs) | |
| Matching Modules | Rectifier | R48-3000e3 / R48-3500e3 |
| Rectifier Efficiency | 95.5% ~ 96.3% | |
| Monitoring Unit | M530B / M830B | |
| Physical Size | Dimension (W×D×H) | 483 × 400 × 352 mm |
| Weight (Without Modules) | ≤ 25kg | |
| Total Weight (Full Config) | ≤ 60kg | |
| Cooling Mode | Intelligent Speed Adjustable Fan | |
| Environment | Operating Temperature | -40℃ ~ +65℃ (Derate above 45℃) |
| Storage Temperature | -40℃ ~ +70℃ | |
| Relative Humidity | 5% ~ 95% (Non-condensing) | |
| Compliance | Certifications | CE, NEBS, UL |
High Load Capacity: 31.5kW maximum power and 540A current meet the demands of large telecom equipment clusters.
Excellent Grid Adaptability: 80~305V wide input ensures stable operation with unstable power and generators.
Energy-Saving Design: Ultra-high efficiency plus ECO mode effectively reduce long-term electricity costs.
Easy O&M: Hot-swap modules and full-front maintenance greatly lower maintenance difficulty and downtime.
Smart Management: Multiple communication ports and powerful battery management realize unattended remote operation.
Comprehensive Protection: Multi-level lightning and safety protection adapt to complex outdoor and indoor environments.
Authorized Certification: Compliant with international CE, NEBS and UL standards for global project deployment.
