Question 1

What are the core electrical conversion parameters and input derating characteristics of the Huawei EPW50-48A rectifier module?

Accepted Answer

The Huawei EPW50-48A delivers a nominal output of -48V DC (adjustable from -42V to -58V DC) with a 50A rated output current and up to 3000W rated capacity. It achieves a peak power conversion efficiency of 95.5%, a power factor (PF) ≥ 0.99, and THD ≤ 5%. Operating within an ultra-wide AC input range of 85V AC to 300V AC, it delivers full rated power between 176V and 290V AC, while executing automatic linear output derating in the low-voltage 85V–176V AC window to maintain continuous DC power under unstable grid or generator conditions.

Question 2

Which Huawei power subracks are compatible with the EPW50-48A, and how do its hot-swap and load-sharing mechanisms function?

Accepted Answer

With standardized dimensions of 130 × 85 × 285 mm, the EPW50-48A integrates natively into Huawei indoor/outdoor power subracks, including TP48200B, TP48300B, and ETP48100/200 systems. It supports zero-disruption live hot-swapping and auto-negotiates via an integrated CAN bus with system monitoring units (e.g., SMU02B/SMU02C). The module utilizes high-precision autonomous active current-sharing technology, keeping parallel load imbalance under ±5% to enable seamless N+1/N+X redundancy and hot-capacity expansion.

Question 3

What reliability and protective designs allow the EPW50-48A to operate in extreme thermal and volatile electrical environments?

Accepted Answer

The EPW50-48A is engineered for an operating temperature range of -40°C to +75°C (with smart thermal derating initiated above 55°C) and features an internal temperature-controlled, variable-speed brushless fan for optimized cooling. Its internal circuitry includes a 4kV/5kA AC surge/lightning protection stage, output over-voltage hardware lock, short-circuit hiccup recovery, and input under/over-voltage hysteresis protection. With an MTBF exceeding 500,000 hours, it thrives in non-climate-controlled outdoor macro base station enclosures.

Key specifications	Value
Nominal DC Output Voltage	-48 V DC
Rated Output Current	50 A
Power Conversion Efficiency	95.5 %
Physical Dimensions Spec	130 × 85 × 285 mm
AC Input Voltage Range	85 ~ 300 V AC
Operating Temperature	-40 ~ +75 °C

Huawei EPW50-48A Robust Telecom Rectifier Module -48V 50A 3000W

What this product is

What this product is

What problem it solves

Who and where it is for

Core advantages

Technical specifications

Applications

5G/4G Wireless Macro BTS Shelters

Core Optical Fiber Transmission Stations

Modular Edge Data Center Enclosures

Mining & Petrochemical Private Networks

Frequently asked questions

Continue exploring

Huawei RRU3182E 5G Outdoor Macro Remote Radio Unit -48V DC 4T4R 1800M/2100M Dual-Band IP65 Die-Cast

Huawei RRU3230E Remote Radio Unit

Huawei RRU3959 Remote Radio Unit

Huawei RRU3971 4T4R Remote Radio Unit