19 Inches DC48V Rectifier Solution with LLVD BLVD for Telecommunication

19 Inches 5U DC48V Rectifier Solution with LLVD BLVD for Telecommunication

Product Overview

The ET-Series 5U is a carrier-grade, high-density DC power platform designed to ensure uninterrupted operation for telecommunications central offices, mid-to-large data centers, and industrial facilities. Operating from dual 220VAC single-phase inputs (with one serving as a hot backup), it delivers a tightly regulated DC output adjustable from –43V to –58V, typically set at –53.5V. With a maximum output of 12kW and conversion efficiencies exceeding 96% across its typical load range, the system significantly lowers both energy consumption and associated cooling costs.

Engineered for service continuity, the system supports up to twelve 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 grid compatibility and stable output. Housed in a 7U 19-inch rack-mountable chassis with an IP20 rating, the unit allows front-access hot-swapping, simplifying maintenance. Rear copper busbars offer a low-impedance, high-current connection path.

Integrated DC distribution with LLVD and BLVD enables prioritized load shedding, helping to preserve critical battery reserves during outages. The advanced system controller provides comprehensive monitoring and programmable logic via 3 AI, 7 DI, and 6 DO ports. Remote management is supported through RS232, RS485, and SNMP interfaces, giving operators full visibility into alarms, performance, and rectifier status. A front-panel LCD allows for convenient on-site access and configuration.

The rectifier modules deliver reliable performance in extreme 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. Combining scalable redundancy, intelligent load management, and rugged construction, the ET-Series provides a future-ready DC power foundation for mission-critical applications where downtime is not an option.

Specification

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.

Company Capability

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