Question 1

What are the core electrical specifications and conversion efficiency of the Huawei R4815G1 rectifier module?

Accepted Answer

The Huawei R4815G1 (SKU: HW-REC-R4815G1-15A) is a digitally controlled high-density rectifier engineered for micro-power and distributed telecom sites. It operates across an ultra-wide AC input range of 85–300 VAC, providing a nominal -48V DC output (adjustable from -42V to -58V DC) with a rated current of 15A and up to 1000W output capability. It delivers a peak conversion efficiency of 96.0%, with a power factor (PF) ≥ 0.99 and total harmonic distortion (THD) ≤ 5%. Measuring only 40.8 × 105 × 281 mm, it delivers outstanding power density and low thermal dissipation in standard 1U installations.

Question 2

Which power systems are compatible with the R4815G1, and does it support hot-swapping and autonomous load sharing?

Accepted Answer

The R4815G1 is designed for Huawei embedded micro-power frames (such as the ETP4830 series, blade-type outdoor telecom power units, and distributed mini DCDU chassis). Equipped with an edge-connector blind-mate interface, it supports live hot-swapping without arcing risks. Built-in CAN/RS485 communication protocols allow seamless telemetry and parameter adjustment via Huawei SMU01 controllers. In multi-module parallel scaling architectures, active autonomous current sharing ensures load imbalance remains below ±5%, enabling smooth capacity growth from 15A upward alongside integrated reverse-polarity and overcurrent self-protection.

Question 3

How do the thermal control and electrical protection mechanisms of the Huawei R4815G1 operate in harsh outdoor environments?

Accepted Answer

The R4815G1 supports an extended operating temperature range from -40°C to +75°C (with linear thermal derating initiating above 55°C), engineered for remote outdoor installations. Cooling is driven by an internal, intelligent variable-speed brushless fan that adjusts RPM dynamically based on power transistor temperatures, reducing acoustic noise and prolonging service life. Electrical hardening includes 2kV differential/4kV common-mode AC surge suppression, AC over/under-voltage cut-off with auto-recovery, hardware-level DC overvoltage latching, short-circuit protection, and seamless BLVD/LLVD coordination, yielding an MTBF exceeding 500,000 hours.

Key specifications	Value
Nominal DC Output Voltage	-48 V DC
Rated Output Current	15 A
Power Conversion Efficiency	96.0 %
Physical Dimensions Spec	40.8 × 105 × 281 mm
Rated Output Power	W
AC Input Voltage Range	85 ~ 300 V AC
Operating Temperature	-40 ~ +75 °C

Huawei R4815G1 Ultra-Compact Telecom Rectifier Module -48V 15A 1000W

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What this product is

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Technical specifications

Applications

5G Micro & Small-Cell Wireless Nodes

Pole-Mount Highway Video Surveillance

FTTx Optical Remote Terminal Cabinets

Industrial IoT & Edge Sensor DC Power

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