NetSure 731 A91-S2 | Vertiv/Emerson 540A 3kW-31.5kW 48V DC Power System with Rectifier

Specifications

NetSure 731 A91-S2 Vertiv/Emerson 48V DC Power System

Product Description

Introduction

The NetSure 731 A91-S2 is a high-performance embedded subrack power system developed by Vertiv (Emerson), built for medium and large-scale telecom networks and data center power distribution. Supporting 380-415V three-phase AC input with an ultra-wide working range of 80~305V AC, this system converts AC to stable 48V DC power. It covers a power range from 3kW up to 31.5kW with a maximum output current of 540A, equipped with matching R48-3000e3 / R48-3500e3 rectifier modules. Adopting digital DSP control technology, ECO energy-saving mode and non-destructive hot-swap design, it integrates comprehensive lightning protection, intelligent battery management and multi-remote communication interfaces. Featuring full-front maintenance, compact 19-inch rack structure and strong environmental adaptability, it is a reliable core power solution for outdoor base stations, central machine rooms and high-load communication projects worldwide.

Key Features

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.

Applications

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

Specifications

Why Choose This Model?

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.

Company Profile

Shenzhen Synergic Technology Co., Ltd., founded in 2024, focuses on the production, manufacturing, R&D, and sales of power related products, including telecom power systems, energy storage batteries, and solar power solutions. We are committed to delivering comprehensive, end-to-end power solutions for our customers.

Our team members primarily come from leading companies in the power supply industry, bringing years of hands-on experience. We supply network energy equipment including telecom power systems, precision distribution cabinets and integrated cabinets (customization available) from ELTEK, Huawei, Vertiv (formerly Emerson), ZTE and CE+T. Our product range also covers UPS, precision air conditioners, batteries and other data room accessories from well-known brands.

All products are strictly tested before delivery. We offer reliable after-sales service and instant spare parts support within warranty to cut your time and costs. Custom OEM/ODM services are also available.

For pricing, configuration options and OEM customization, please contact us for detailed technical support and quotation.

WhatsApp: +86 13714076096
Email: 3795149443@qq.com
Website: https://www.synergicsys.com

FAQ

Q: What is the AC input specification of this power system?

A: It adopts 380-415V three-phase AC input, with a wide working range of 80~305V AC.

Q: What are the power and current parameters?

A: The system power ranges from 3kW to 31.5kW, and the maximum DC output current is 540A.

Q: Which rectifier modules are compatible?

A: It matches R48-3000e3 and R48-3500e3 rectifier modules.

Q: Does it support hot swap?

A: Yes, rectifier and monitoring modules support non-destructive hot swap for maintenance without powering off.

Q: What communication interfaces does it have?

A: Equipped with RS232, RS485, Ethernet and USB ports for remote monitoring and configuration.

Q: What is the working temperature range?

A: Operating temperature is -40℃ ~ +65℃, and it needs power derating above 45℃.

Q: What certifications does this product have?

A: It has passed CE, NEBS and UL international certifications.