One-stop 18kw Cabinet Rack-mount Rectifier System for Powering Telecommunication Equipment

One-stop Cabinet Rack-mount 18kw Rectifier System for Powering Telecommunication Equipment

Product Overview of 18kw Rectifier System

Designed for carrier-grade reliability and high-density power delivery, the ET-Series 18kW rectifier system ensures uninterrupted DC power for telecommunications central offices, medium-to-large data centers, and industrial environments. The system operates from 220V AC single-phase inputs and produces a finely regulated DC output ranging from –43V to –58V, with a standard setting of –53.5V. Delivering up to 18kW and achieving conversion efficiencies above 96% across its typical load spectrum, it substantially reduces both energy usage and the cooling demands that come with it.

Built with continuous operation in mind, the unit accommodates up to six hot-swappable 3000W rectifier modules, allowing N+1 or higher redundancy configurations. Each module weighs under 2kg and uses forced-air cooling, active Power Factor Correction (≥0.99), and low Total Harmonic Distortion (THDi ≤5%) to ensure smooth grid interaction and stable output. All components are housed in a 5U, 19-inch rack-mountable chassis rated IP20, with front-access hot-swap capability that simplifies maintenance. Rear-mounted copper busbars provide a low-impedance, high-current connection path.

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

The rectifier modules perform reliably under harsh conditions, operating without derating across a temperature range of –40°C to +65°C and relative humidity from 5% to 95% (non-condensing). Full rated power is maintained at altitudes up to 3000 meters. With scalable redundancy, intelligent load management, and rugged construction, the ET-Series 18kW Rectifier System offers a future-ready DC power backbone for mission-critical applications where any downtime is unacceptable.

Basic Specification of 18kw Rectifier System

Power Distribution of 18kw Rectifier System

Rectifier Module of 18kw Rectifier System

Controller of 18kw Rectifier System

Environment of 18kw 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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