Q: What are the environmental durability, surge protection, and reliability specifications of the R4850G6 in harsh base station deployments?

The R4850G6 is built for challenging field conditions, operating from -40°C to +75°C (100% continuous output up to +55°C, linear derating up to +75°C) with cold start at -40°C. Cooling is handled by an internal stepless variable-speed fan coupled with a directed airflow path and conformal PCB coating to resist moisture, dust, and industrial pollution. Lightning and surge protection meets IEC 61000-4-5 standards with 4kV differential mode and 5kV common mode suppression on the AC port. It incorporates DC overvoltage latching, short-circuit self-recovery, and overtemperature protection, ensuring an MTBF exceeding 500,000 hours.

Question 1

What are the core electrical output and efficiency ratings of the Huawei R4850G6 rectifier, and how does it derate under low-voltage input?

Accepted Answer

The Huawei R4850G6 provides a nominal -48V DC output (adjustable from -42V DC to -58V DC), a rated current of 50A, and a rated capacity of 3000W, delivering a peak conversion efficiency of 96.8%, with PF ≥ 0.99 and THD ≤ 5%. Operating across a wide AC input range of 85VAC to 300VAC, it outputs full 3000W capacity between 176VAC and 300VAC. Between 85VAC and 176VAC, it implements a linear derating strategy (derating to approximately 1250W at 85VAC), preventing system brownouts during severe utility grid undervoltage conditions.

Question 2

Which Huawei power subracks are compatible with the R4850G6, and can it be mixed or hot-swapped with legacy R4850G2/R4850N modules?

Accepted Answer

Engineered with a standard 1U form factor (40.8 × 105 × 281 mm), the R4850G6 natively fits Huawei ETP48100, ETP48200, and ETP48400 embedded power systems, as well as APM30H and ICC710 outdoor telecom enclosures. It integrates with SMU02B/SMU02C controllers over CAN bus, featuring live hot-swapping and active digital current sharing (imbalance < ±5%). While physically and electrically backward-compatible for mixed operation with R4850G2 and R4850N units, group-level upgrades are strongly advised to unlock the full energy-saving benefits of the G6's 96.8% efficiency curve and deep-sleep management algorithms.

Question 3

What are the environmental durability, surge protection, and reliability specifications of the R4850G6 in harsh base station deployments?

Accepted Answer

The R4850G6 is built for challenging field conditions, operating from -40°C to +75°C (100% continuous output up to +55°C, linear derating up to +75°C) with cold start at -40°C. Cooling is handled by an internal stepless variable-speed fan coupled with a directed airflow path and conformal PCB coating to resist moisture, dust, and industrial pollution. Lightning and surge protection meets IEC 61000-4-5 standards with 4kV differential mode and 5kV common mode suppression on the AC port. It incorporates DC overvoltage latching, short-circuit self-recovery, and overtemperature protection, ensuring an MTBF exceeding 500,000 hours.

Key specifications	Value
AC Input Voltage Range	85VAC ~ 300VAC (Nominal 220VAC) VAC
Nominal DC Output Voltage	-48 V DC
Cooling Method	Built-in intelligent continuously variable-speed fan
Physical Dimensions Spec	40.8 (1U) × 105 × 281 mm

Huawei R4850G6 Flagship Ultra-High Efficiency Rectifier -48V 50A 3000W

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