SNMP RS232 RS485 Customized Telecom Power Systems for Outdoor Communication

Product Overview

The ET48500 DC rack power system is a high-density, carrier-grade power conversion solution tailored for core telecommunications hubs, enterprise-class data centers, and industrial sites where uninterrupted DC power is non-negotiable. It accepts single-phase 220VAC input via rear copper busbars—with no built-in circuit breaker—and provides a regulated DC output adjustable from –43VDC to –58VDC, nominally set at –53.5VDC. Scalable to a full 30kW output, the system achieves conversion efficiency greater than 96% across its operating range, helping to curb energy waste and lower total cost of ownership.

Built on a fully modular and fault-tolerant platform, the system supports up to ten 3000W rectifier modules in N+1 or enhanced redundancy configurations. Each hot-swappable module weighs less than 2kg and employs forced-air cooling together with active power factor correction (≥0.99) and low total harmonic distortion (THDi ≤5%), ensuring both grid stability and high-fidelity DC output. The entire assembly is contained within a 6U chassis designed for tool-less integration into standard 19-inch cabinets. Front-facing access enables rapid module replacement and service, while rear-side copper busbars support clean, high-current cabling. An IP20-rated enclosure provides basic mechanical protection during installation and operation.

For intelligent power distribution, the integrated DC panel features both LLVD and BLVD functions, enabling prioritized load shedding and optimized battery energy utilization during mains failures. System control and monitoring are managed by an onboard controller that includes 4 analog sensor inputs, 8 digital status inputs, and 8 independently configurable dry-contact alarm relays. Remote supervision is fully supported through RS232, RS485, and SNMP interfaces, offering real-time visibility into voltages, currents, rectifier health, and alarm conditions. At the rack level, a built-in LCD screen allows technicians to perform local diagnostics and parameter adjustments without external tools.

Ruggedized for continuous duty in harsh environments, the ET48500 operates reliably from –40°C to +65°C ambient temperature and endures relative humidity from 5% to 95% (non-condensing). It delivers full-rated output power with no derating at altitudes up to 3000 meters. By merging scalable modularity, flexible load control, and telecom-grade durability, the ET48500 delivers a versatile and resilient DC power foundation for applications where system downtime translates directly into operational and reputational risk.