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HUAWEI Rectifier Module R4875G1R4875G11. Product Overview
The Huawei R4875G1 is a high-efficiency, high-power density digital rectifier module. It converts a wide range of AC input into a nominal 53.5 VDC output, delivering up to **4000W of power. It features soft start, comprehensive protection, low noise, and supports parallel operation. This module is hot-swappable and utilizes advanced power monitoring technology for real-time status tracking and remote voltage adjustment .
2. Key Features
- High Efficiency: Peak efficiency up to **97%** .
- Wide Input Range:85 – 300 VAC .
- Wide Temperature Range: -40℃ to +75℃ operation .
- Hot-swappable: Supports online replacement without system shutdown .
- Digital Control: Fully digital control for high performance .
- Communication:Supports **CAN bus** and **RS485** protocols .
- Adjustability: Supports output voltage and current adjustment .
- Low THD:Total Harmonic Distortion ≤ 5% .
3. Technical Specifications
3.1 Input Specifications
Parameter: Specification
Voltage Range: 85 VAC – 300 VAC (85 – 420 VDC)
Frequency: 45 – 66 Hz (Rated: 50/60 Hz)
Max. Input Current: ≤ 24 A
Power Factor (PF): ≥ 0.99 ( >50% load at 230 VAC)
Total Harmonic Distortion (THD) ≤ 5% ( >50% load at 230 VAC)
3.2 Output Specifications
Parameter: Specification
Rated Voltage: 53.5 VDC (Adjustable: 42 – 58 VDC)
Rated Current: 75 A |
Rated Power: 4000W
(176 – 300 VAC input)<br>1600W – 4000W (85 – 176 VAC input, linear derating)
Efficiency Peak: 97% ; ≥96% (230 VAC, 20%-90% load)
Ripple & Noise: ≤ 200 mVp-p (Bandwidth ≤ 20 MHz)
Regulation Precision** | ≤ ±0.6%
Hold-up Time** | > 10 ms
3.3 Environmental & Mechanical Specifications
Parameter | Specification |
Operating Temperature: -40℃ to +75℃ (Full output up to 55℃)
Storage Temperature: -40℃ to +75℃
Relative Humidity: 5% – 95% RH (Non-condensing)
Altitude: ≤ 5000 m (Derating required >2000m)
Dimensions (H x W x D): 40.8 mm x 105 mm x 281 mm (1.6" x 4.1" x 11.1")
Weight: ≤ 2.2 kg (4.85 lbs)
Cooling: Forced air cooling (Built-in fan)
4. Protection Features
Input Overvoltage Protection: > 300 VAC .
Output Short Circuit & Overcurrent Protection.
Over-temperature Protection .
5. Certifications
The module complies with international standards including TUV, CE, UL, FCC, CB, and RoHS.
6. Applications
Telecom power systems (e.g., Huawei ETP48400 series) .
Data center power supplies.
Industrial power systems.
DC power supply systems for base stations .
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