High Density 3U 18kW DC Power System for Space Constrained Telecom Sites

High-Density 3U 18kW DC Power System for Space-Constrained Telecom Sites

Product Overview

Engineered for modern telecom infrastructure where rack space is at a premium, this 3U 18kW DC power system delivers high-capacity -48V DC output in a highly compact form factor. By optimizing the internal chassis layout, the system occupies only 3U of a standard 19-inch rack—freeing up valuable space for revenue-generating transmission and switching equipment. It is an ideal power backbone for 5G edge nodes, BBU pooling, small central offices, and equipment rooms operating under strict space and weight constraints.

AC Input and High-Density Power Conversion

The system is powered by a 380VAC three-phase input with a convenient terminal block configuration (L1/N1, L2/N2, L3/N3). At its core, the system houses six 3,000W hot-swappable rectifier modules operating in an N+1 redundant configuration. Delivering a peak efficiency of 96%, these modules significantly minimize operational energy costs and waste heat. Even if a single module fails, the remaining modules seamlessly share the load, ensuring uninterrupted service. The compact chassis utilizes forced-air cooling to maintain optimal thermal performance without compromising the dense 3U footprint.

Intelligent Control and Active Battery Management

The system is managed by the advanced MC2600 controller, providing comprehensive real-time monitoring and autonomous site management. The controller is equipped with 7 Digital Inputs (DI), 6 Digital Outputs (DO), and 3 Analog Inputs (AI), allowing for seamless integration with external environmental sensors and alarm systems.

Beyond basic monitoring, the controller features sophisticated battery management capabilities, including temperature-compensated charging and adaptive charge-stage transitions, which are critical for extending battery life in unattended outdoor or shelter environments. Remote supervision is supported via 1×RS485 and 1×LAN (Ethernet) ports, enabling direct integration into network management systems.

DC Distribution and Battery Protection

The power distribution architecture is designed for mission-critical reliability. It features a robust battery connection utilizing a 1×250A 3P battery breaker, ensuring secure and independent isolation of the battery bank for maintenance.

The load distribution is intelligently segmented into two priority tiers to maximize backup runtime:

BLVD : 6×63A + 2×125A dedicated to critical loads (such as transmission and routing equipment) that must remain powered during extended outages.

LLVD: 1×125A for non-critical loads, which can be automatically shed during deep battery discharge to preserve capacity for essential equipment.

Key Technical Specifications