DC Remote Power Unit
Product Overview:
LCX Power-YDS DC remote-power-supply local-end unit belongs to communication base station & off-grid no-power-area series.
It is the core power-generating unit of DC remote power-supply system. It adopts full-digital DSP closed-loop control and high-frequency isolated boost topology.
It takes AC or DC power from local-end machine room, converts it into adjustable floating high-voltage DC, and transmits power to multiple remote-end converters through long-distance cables.
Modular hot-swap design supports N+1 redundant parallel expansion. Built-in line fault detection circuit, it can identify short-circuit, open-circuit, electric-leakage and strong-electricity intrusion of transmission lines rapidly.
After fault elimination, it can automatically restore power supply. Cooperating with remote-end units, it solves power-access difficulty for scattered outdoor communication terminals, reducing site construction and operation-maintenance cost for off-grid sites.
Typical Applications:
· 4G/5G pull-away base stations, marginal remote communication sites
· Highway, railway, tunnel along-line monitoring & communication equipment power-supply system
· Mountainous, pastoral and island scattered off-grid communication terminals
· Meteorology, hydrology, environmental-monitoring outdoor remote equipment
· Oil-gas field, pipeline unattended monitoring terminal remote power supply
· Security monitoring, WLAN-AP, ONU equipment centralized remote power-supply project
Technical Specifications:
1. Topology & System Architecture High-frequency isolated boost topology, full-digital DSP closed-loop control. Modular hot-swap power unit, support N+1 redundant parallel expansion and active current sharing. Matches multiple remote end converters for multi-load simultaneous power supply.
2. Electrical & Transmission Performance - Wide-range AC / DC dual-mode input, adapt to mains, battery, wind-solar hybrid input -Floating high-voltage DC output, output voltage continuously adjustable according to transmission distance -System conversion efficiency ≥94%-Output voltage accuracy ≤±0.5%FS, low output ripple coefficient ≤0.8%-Fast response; line fault protection action time ≤50ms；After fault removal, auto-recovery output.
3. Complete Line-oriented Protection Mechanism Built-in special line-detection circuit. Support short-circuit, open-circuit, electric-leakage, strong-electricity intrusion, over-voltage, over-current, over-temperature and lightning surge protection. When line fault occurs, it cuts high-voltage output and switches to low-voltage inspection voltage, to guarantee personnel and equipment safety; fault alarm and fault-event record function.
4. Working Mode Compatibility Support mains priority, battery backup, wind-solar hybrid input working modes. Can work with upper-layer EMS energy-management system. Realize centralized power supply for multiple remote-end loads on one single local-end unit.
5. HMI & Communication Interface Color touch-screen HMI with Chinese-English bilingual. Real-time display local-end input, remote-supply high-voltage, output current, line status and alarm information. Standard RS485, Ethernet interfaces, Modbus protocol. Support remote monitoring, parameter setting, fault locating for multi-site centralized management.
6. Cooling & Environmental Adaptability Intelligent temperature-controlled air cooling. Optional cabinet-type outdoor version with higher protection grade. Operating temperature:-20℃ ~ +55℃. Dust-proof and moisture-proof design, adapt to machine room, outdoor cabinet and other application environments.
Technical Parameters and Selection
Technical Parameters and Selection
