Upgradable Telecom Modular Rectifier System with AC and DC Power Distribution

Upgradable Telecom Modular Rectifier with N + 1 Redundancy for Telecommunication

Product Overview of Modular Rectifier System

The upgradable 18kW rectifier system is developed for carrier-grade reliability and high-density power delivery and to provide stable AC and DC power distribution for telecommunications central offices, medium-to-large data centers, and a range of harsh environments. The system accepts 220V AC single-phase input and provides a tightly regulated DC output adjustable between –43V and –58V, typically set at –53.5V.

Simultaneously, it delivers a 220V 16A AC output with Class C surge protection. With a maximum output capacity of 18kW and conversion efficiencies exceeding 96% across most of its load range, the system significantly cuts both energy consumption and the associated cooling requirements.

Engineered for uninterrupted operation, the unit supports up to six hot-swappable 3000W rectifier modules, enabling N+1 or higher redundancy. Each module weighs less than 2kg and features forced-air cooling, active Power Factor Correction (≥0.99), and low Total Harmonic Distortion (THDi ≤5%) to ensure clean grid interaction and stable output. All components are housed in a 5U, 19-inch rack-mountable chassis with an IP20 rating. Front-access hot-swap capability simplifies maintenance, while rear-mounted copper busbars offer a low-impedance, high-current connection path.

The integrated DC distribution includes both low-voltage load disconnect (LLVD) and battery low-voltage disconnect (BLVD), allowing prioritized load shedding to safeguard critical battery reserves during power outages. An advanced system controller provides comprehensive monitoring and programmable logic through analog inputs (AI), digital inputs (DI), and digital outputs (DO). Remote management is supported via RS485 and SNMP interfaces, giving operators full visibility into alarms, performance metrics, and rectifier status. A front-panel LCD also enables convenient on-site configuration and diagnostics.

Basic Specification of 5U Modular Rectifier System

Power Distribution of 5U Modular Rectifier System

Rectifier Module of 5U Modular Rectifier System

Controller of 5U Modular Rectifier System

Environment of 5U Modular Rectifier System

Introduction 

ESTEL(GUANGDONG)TECHNOLOGY CO., LTD, located in China, is a professional supplier of integrated outdoor telecom cabinet and temperature control solutions for outdoor telecom base station. As a science and technology innovative company, we engage in the R&D, manufacture, and sales of telecommunication equipment. Estel has a well-established team of technical and management experts who can meet customers’ specific needs accurately.

The base station integrated solutions and products include outdoor integrated telecom equipment cabinet, battery cabinet, RRU cabinet, power supply cabinet, environment monitoring system, TEC peltier air conditioner, AC220V compressor air conditioner, DC48V variable frequency air conditioner, heat exchanger, rectifier, UPS, embedded telecom power system etc. All the above solutions and products can be custom made.

Our products and solutions have been deployed all over China. Our main domestic customers are China Telecom, China Mobile, China Unicom, State Grid, Shenzhen / Beijing Metro and Huawei / ZTE etc. In addition, our products have been exported to Europe, North America, South America, Central America, Southeast Asia, Africa, Australia, Mid East countries, etc.

“ Customers First, Quality First ” is always our principle. We have attained many certifications, such as ISO9001, ISO14001, OHSAS18001, CE, UL, FCC etc. AS a telecom integrated solutions / energy saving system integrator in China, We have strong advantages in technology competitiveness, management competitiveness ,service competitiveness and price competitiveness. Through many years of experiences in design, production and implementation of different projects around the world, we have gained great reputation. Relying on professional technique and strict quality control, we will continuously offer high cost-effective products and solutions to our respectable customers globally. We will always try our best to meet customers’ need and requirement.

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