Tianjin Estel Electronic Science and Technology Co.,Ltd
TIANJIN ESTEL ELECTRONIC SCIENCE AND TECHNOLOGY CO.,LTD (ESTEL(GUANGDONG) TECHNOLOGY CO., LTD) We are the professoinal supplier of outdoor telecom cabinet, air conditioner, heat exchanger, and telecom
Add to Cart
Product Overview
The 3–27kW 7U rack-mounted DC power system is a high-capacity solution designed for telecom networks, data centers, and industrial facilities requiring reliable DC supply. 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 capacity of 27kW, this system ensures sufficient power for large-scale applications while maintaining efficiency above 96%.
The system integrates up to nine rectifier modules, each rated at 3000W and weighing ≤2kg. These modules feature forced cooling, high power factor ≥0.99, and THD ≤5%, ensuring clean and stable DC power conversion. With front maintenance, top cable entry, and IP20 protection, the design prioritizes safety, serviceability, and ease of integration into 19-inch racks.
DC distribution includes six 125A battery breakers and four 63A load breakers, providing flexible and secure load management. The intelligent controller supports 4 analog inputs, 7 digital inputs, 6 dry contact alarms, and remote communication via RS232/485 and SNMP. Local monitoring is enabled through an LCD display.
Built for challenging environments, the unit operates from –40℃ to +65℃, withstands 5–95% non-condensing humidity, and maintains stable operation at altitudes up to 3000m. With its modular architecture and robust performance, the 3–27kW 7U DC power system is an ideal choice for critical infrastructure requiring scalable and dependable energy solutions.
System
Dimension: 482.0(W) × 350.0(D) × 7U(H)
Weight: ≤30kg (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: 27kW (3kW × 9)
Battery breakers: 6×125A/1P
Load breakers: LLVD: None; BLVD: 4×63A/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.)
