3–18kW DC Power System 6U Subrack, 380VAC/220VAC Input, –43 to –58VDC Output, >96% Efficiency, ≤2kg Rectifier Modules

Product Overview

The 3–18kW DC Power System 6U Subrack is a reliable and scalable power solution designed for telecom, IT, and industrial applications. It supports both 380VAC three-phase and 220VAC single-phase input, delivering a stable –43 to –58VDC output with a rated value of –53.5VDC. With a maximum system capacity of 18kW and an efficiency above 96%, it ensures high performance, energy savings, and consistent operation.

The system adopts a modular architecture with up to six rectifier modules, each rated at 3000W and weighing less than 2kg. Modules feature forced cooling, power factor ≥0.99, and THD ≤5%, providing clean and efficient DC output. The lightweight design with front maintenance support simplifies installation and service, while IP20 protection guarantees safety and durability.

Equipped with four battery breakers (4×125A/1P) and dual load breakers (2×63A/1P), the system provides secure DC distribution. It also integrates 4 analog inputs for battery and ambient temperature, 7 digital inputs, and 6 dry contact alarm outputs. Monitoring is enabled via RS232/485 and SNMP, with an LCD interface for user-friendly operation.

Built for harsh environments, the unit operates from –40℃ to +65℃ (full load below 50℃), withstands humidity of 5–95% non-condensing, and supports installation at altitudes up to 3000m. Its compact 6U design and 19-inch rack compatibility make it an ideal choice for critical power supply applications requiring high efficiency, scalability, and reliability.

3-18kW 6U Subrack

System

• Dimension: 482.0(W) × 350.0(D) × 6U(H)

• Weight: ≤25kg (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: 380VAC three-phase or 220VAC single phase

• Input capacity: 1×63A/3P

• 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: 18kW (3kW × 6)

• Battery breakers: 4×125A/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%

• DC output: –43 ~ –58VDC, rated –53.5VDC, maximum 55A

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.)