PSU-AC
ZTE PSU-AC Telecom Switch-Mode Rectifier Power Module (-48V 30A 1740W)
Product information
View supportSupport & Troubleshooting
Find equipment information and technical guides by model, and bring clarity to on-site issues.
Find support by equipment
Choose a device to view its information and ask a specific technical question.
R48-1000A
Vertiv Emerson R48-1000A Telecom Rectifier Module -48V 20A 1000W
Product information
View support
R48-1000E3
Vertiv R48-1000E3 Ultra-Compact High-Efficiency Telecom Rectifier Module (-48V 20A 1000W)
Product information
View support
R48-1800A
Vertiv R48-1800A Reliable Compact High-Frequency Telecom Rectifier Module (-48V 37.5A 1800W)
Product information
View support
R48-2000A3
Vertiv R48-2000A3 Telecom Rectifier Module -48V 40A 2000W
Product information
View support
R48-2000e3
Vertiv R48-2000e3 High Efficiency Telecom Rectifier Module -48V 2000W
Product information
View supportTechnical guides & references
Explore published articles on equipment selection, interfaces and maintenance.
Engineering Guide: Telecom Rectifier Gold Finger Pinout, Standalone Jumpers, and CAN Bus Voltage Tuning
A comprehensive technical breakdown of 48V/50A rectifier modules (Huawei R4850G2 / ETP48400 architecture), covering blind-mate connector pinouts, standalone startup jumpers, CAN 2.0B hex commands for CV/CC adjustment, and active current sharing troubleshooting.
Huawei 100G QSFP28 LR4 Optical Transceiver: Cleaning Procedure, Optical Power Testing & Troubleshooting Guide
A comprehensive hands-on engineering guide to Huawei 100G QSFP28 LR4 optical transceivers. Covers fiber end-face inspection and dry/wet cleaning protocols, DDM optical power measurement limits, and step-by-step troubleshooting for multi-vendor switch interoperability.
Huawei R4850G2 Rectifier Pinout Definition, Standalone Startup & 53.5V Wiring Guide
A comprehensive practical guide for field telecom engineers: deciphering the gold-finger backplane pinout of Huawei R4850G2 (50A/3000W), standalone offline startup without controller, CAN bus voltage adjustment, and safety precautions.
Have a model and an on-site issue?
Share the exact model, alarm text and observed symptoms to help identify relevant information and compatibility requirements.