3–12kW DC Power System 5U Subrack, 220VAC Input, 43–58VDC Output, >96% Efficiency, ≤2kg Rectifier Modules, 19-Inch Rack Mount

Product Overview

The 3–12kW DC Power System 5U Subrack is a high-efficiency, compact power solution designed for telecom, data center, and industrial applications. Built for flexible rack or cabinet installation, it supports 220VAC single-phase input and provides a stable –43 to –58VDC output with a rated value of –53.5VDC. The system achieves an efficiency of over 96%, ensuring reliable performance and low energy loss.

The modular design accommodates up to four rectifier modules, each rated at 3000W with a weight of ≤2kg. Forced cooling guarantees stable operation under heavy loads, while the system maintains excellent power quality with power factor ≥0.99 and THD ≤5%. The total capacity reaches 12kW, suitable for demanding backup and distribution scenarios.

For control and monitoring, the system integrates 4 analog inputs (battery and ambient temperature), 7 digital inputs, and 6 dry contact alarm outputs. Communication is enabled via RS232/485 and SNMP, with an intuitive LCD display for local management.

Engineered for harsh environments, the unit operates within –40℃ to +65℃ (full load below 50℃), tolerates humidity from 5% to 95% non-condensing, and supports altitudes up to 3000m. Its robust design ensures long-term reliability even in challenging conditions.

With its lightweight rectifier modules, front maintenance support, and IP20 protection, this DC power system offers a cost-effective and scalable solution for operators requiring high availability, compact size, and easy serviceability.

3-12kW 5U Subrack

System

• Dimension: 482.0(W) × 350.0(D) × 5U(H)

• Weight: ≤20kg (without rectifiers)

• Cooling mode: Natural cooling

• Installation mode: Installed on 19-inch rack or inside the cabinet

• Cabling mode: Top inlet and top outlet

• Maintenance mode: Front maintenance, support module grade change

• Protection level: IP20

AC Distribution

• Input mode: 220VAC single phase

• Input capacity: 1×100A/2P

• Input frequency: 45–66Hz, rated value: 50Hz/60Hz

• AC SPD: 20kA/40kA, 8/20μs

DC Distribution

• Output voltage: –43 ~ –58VDC, rated value: –53.5VDC

• Maximum capacity: 12kW (3kW × 4)

• Battery breakers: 2×63A/1P

• Load breakers: LLVD: None; BLVD: 2×63A/1P

• DC SPD: 10kA, 8/20μs

Rectifier

• Input voltage: 85VAC ~ 300VAC, rated 220VAC

• Efficiency: >96%

• Rated power: 3000W (176–300VAC)

• Working temperature: –40℃ ~ +75℃ (full output below 50℃)

• Dimension: 106.5mm(W) × 286mm(D) × 41.5mm(H) (1U/H)

• Weight: ≤2kg

• Cooling mode: Forced cooling

• Power factor: ≥0.99

• THD: ≤5%

Controller

• Signal input: 4 AI (3 Battery temp., 1 ambient temp), 7 DI

• Alarm output: 6 dry contact

• Communication port: RS232/485, SNMP

• Display mode: LCD

Environment

• Operating temperature: –40℃ ~ +65℃ (full output below 50℃)

• Storage temperature: –40℃ ~ +70℃

• Operating humidity: 5% ~ 95% (non-condensing)

• Altitude: 0 ~ 3000m (If the altitude is within the range of 2000m to 3000m, the maximum operating temperature decreases by 1℃ as the altitude increases by 200m.)

Introduction 

Tianjin Estel Electronic Science and Technology Co., Ltd (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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