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ETP4890-B3A1-1 48V 90A Telecom DC Power Supplya
Stable Power Output: Standard 48V DC single output, rated 90A current, power range 401-500W, steady voltage with low ripple to avoid signal interference.
Wide Grid Adaptation: 200-240V AC input, 45-66Hz frequency, 85-300V ultra-wide working voltage range, stable operation under unstable power grids.
High Power Factor: Power factor up to 0.99 under rated load, low reactive power loss and excellent energy-saving performance.
Natural Heat Dissipation: Fanless design reduces failure points and operating noise, suitable for 24-hour uninterrupted long-term operation.
Hot-Swap Modular Design: Rectifier and monitoring modules support hot plugging. No shutdown required for replacement, greatly simplifying on-site maintenance.
Intelligent Monitoring System: Equipped with dedicated SMU monitoring unit, supporting remote data viewing, fault alarm and centralized management.
Complete Protection Mechanism: Integrated overvoltage, overcurrent, short-circuit and over-temperature protection, plus lightning protection to safeguard equipment safety.
Rugged Environmental Adaptability: Works stably from -40℃ to +65℃, storage temperature -40℃ to +70℃, normal operation below 4000m altitude.
Standard Structure: 3U rack-mounted design, 19-inch cabinet compatible, front maintenance and reasonable cabling for easy installation.
Mobile communication base stations and remote cell sites
Indoor telecom machine rooms and transmission equipment rooms
FTTX fiber-optic broadband access systems
Small and medium-sized embedded DC power distribution projects
Industrial equipment and backup power supply systems
| Category | Item | Parameter |
|---|---|---|
| Basic Info | Product Type | Embedded Telecom DC Power Supply / Rectifier Module |
| Model | ETP4890-B3A1-1 | |
| Output Type | Single | |
| AC Input | Rated Voltage | 200 ~ 240 VAC |
| Working Voltage Range | 85 ~ 300 VAC | |
| Input Frequency | 45 ~ 66Hz (Nominal 50/60Hz) | |
| Power Factor | ≥ 0.99 (Rated Load) | |
| DC Output | Nominal Voltage | 48V DC (Adjustable: 42 ~ 58V DC, Default 53.5V DC) |
| Rated Output Current | 90A | |
| Output Power | 401 ~ 500W | |
| Voltage Regulation Accuracy | ≤ ±1% | |
| Output Ripple | ≤ 200mVpp | |
| Matching Parts | Compatible Rectifier | R4830G1 / R4830N2 (Max 3 units) |
| Monitoring Unit | SMU01C | |
| Physical & Structure | System Height | 3U |
| Dimension (W×D×H) | 482.6 × 330 × 219.5mm | |
| Weight (With Modules) | ≤ 13kg | |
| Protection Grade | IP20 | |
| Cooling Mode | Natural Cooling (Fanless) | |
| Installation | 19-inch Standard Rack | |
| Maintenance Mode | Front Maintenance | |
| Environment | Operating Temperature | -40℃ ~ +65℃ |
| Storage Temperature | -40℃ ~ +70℃ | |
| Relative Humidity | 5% ~ 95% (Non-condensing) | |
| Max Working Altitude | 4000m (Derate 1℃ per 200m above 2000m) | |
| Certification | Qualification | CE, RoHS, ISO |
Cost-effective Performance: 90A large current output meets medium-load power demands, ideal for small and medium telecom projects.
Strong Grid Compatibility: Ultra-wide input voltage adapts to complex power supply environments in different regions.
Low Failure Rate: Fanless natural cooling reduces daily maintenance work and improves operational stability.
Easy O&M: Hot-swap modules and front maintenance design save time for equipment replacement and inspection.
Full Protection: Multi-layer safety and lightning protection ensure stable operation in harsh indoor and outdoor scenarios.
Remote Manageable: Built-in monitoring unit supports unattended management for multiple sites.
