Intelligent 4U DC Power Shelf for Outdoor Telecom Enclosures Wireless Infrastructure
Product Positioning 4U DC Power Shelf for Outdoor Telecom
This is a compact highly capable -48V DC power system developed for telecom operators, system integrators, and infrastructure providers that need stable DC supply in limited installation space. It is particularly suitable for outdoor communication cabinets, FTTx nodes, compact BTS sites, wireless backhaul equipment, and industrial networking enclosures where footprint, front-access maintenance, and system reliability are critical.
Its modular design allows flexible expansion as site load grows. Operators can start with fewer rectifier modules and add capacity later without replacing the entire system, which helps control initial investment and simplifies network expansion.
Space Efficiency Without Sacrificing Function
The 4U profile is designed for locations where rack space is limited but dependable DC power is still required. It fits neatly into 19-inch racks, compact communication cabinets, roadside telecom boxes, and edge enclosures.
Stable Operation in Unstable Power Environments
With a wide AC input range, the system can continue operating under fluctuating mains conditions often found in rural, remote, or mixed-grid environments. This makes it suitable for distributed telecom deployments where incoming power quality may not always be ideal.
Battery Backup Management Built In
The controller supports battery charging, float management, equalization control, low-voltage disconnect, and alarm supervision, improving backup power reliability and extending battery service life.
Typical Application Environments 4U DC Power Shelf for Outdoor Telecom
Outdoor telecom cabinets
Small wireless base stations and repeater sites
Microwave / wireless backhaul installations
Smart traffic and roadside communication systems
Security monitoring, access control, and surveillance networks
Utility communication cabinets and industrial networking nodes
Key Design Highlights 4U DC Power Shelf for Outdoor Telecom
Compact 4U rack-mount architecture for space-sensitive deployments
Supports hot-swappable rectifier modules for fast maintenance
Front-access cabling and breaker arrangement simplifies installation
Intelligent controller with real-time alarms and communication interfaces
High efficiency reduces internal heat build-up and operating cost
Flexible DC distribution design for telecom loads and battery backup integration
Smart fan control adjusts cooling according to load and temperature
Suitable for distributed telecom, industrial, and edge power scenarios
Main Technical Specifications 4U DC Power Shelf for Outdoor Telecom
Mechanical & Installation
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Item
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Specification
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Product Type
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4U modular telecom DC power system
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Mounting Format
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19-inch rack mount / cabinet integration
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Dimensions
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482 mm (W) × 260 mm (D) × 4U (H)
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Net Weight
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≤18 kg
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Access Design
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Front access for wiring, monitoring, and maintenance
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Cooling Method
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Intelligent fan cooling
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Protection Grade
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IP20
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AC Input
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Item
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Specification
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Input Voltage Range
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85–300 VAC
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Rated Input Voltage
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220 VAC
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Frequency Range
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45–66 Hz
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Power Factor
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≥0.99
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THD
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≤5%
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AC Input Protection
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Overvoltage, undervoltage, surge, input abnormal alarm
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DC Output
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Item
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Specification
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Nominal Output Voltage
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-48V DC
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Output Voltage Range
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-42V to -58V DC
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Maximum Output Power
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6 kW
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Maximum Output Current
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125 A
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Rectifier Module Capacity
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2 kW per module
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Rectifier Configuration
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Up to 3 rectifier modules
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Voltage Regulation Accuracy
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≤±0.5%
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Load Regulation
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≤±0.5%
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Overall Efficiency
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≥95.5%
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Battery & Load Management
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Item
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Specification
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Battery Charging Mode
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Float charge / equalization charge
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Battery Protection
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Low-voltage disconnect (LVD), reverse polarity protection
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Battery Temperature Compensation
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Supported (optional sensor)
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Load Distribution
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MCB / fuse optional according to project design
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Battery Branches
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1–2 battery strings optional
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DC Load Branches
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Configurable based on cabinet layout
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Monitoring & Communication
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Item
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Specification
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Controller Type
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Intelligent digital monitoring unit
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Local Display
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LCD / LED status indicators
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Communication Ports
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RS485 / Ethernet
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Optional Protocols
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SNMP / Modbus
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Alarm Functions
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AC failure, DC abnormal, rectifier fault, fan fault, battery low voltage, overtemperature
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Remote Monitoring
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Supported
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Environmental Performance
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Item
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Specification
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Operating Temperature
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-25°C to +65°C
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Storage Temperature
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-40°C to +70°C
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Relative Humidity
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5%–95% (non-condensing)
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Noise Level
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≤58 dB
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This integrated structure helps customers reduce the number of separate devices required inside the cabinet, making overall site design cleaner and easier to maintain.
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