HUAWEI ETP4890-A2 Embedded 48V DC Power System 90A 4.8kW 2U. Model ETP4890-A2.

Product Overview

The Huawei ETP4890-A2 is an AC/DC embedded power system designed for access networks, transmission networks and enterprise communication equipment. Configured with 1U 15 A or 30 A high-efficiency rectifier modules, it delivers a rated 90 A output (4.8 kW maximum) and installs in standard 19-inch or 21-inch racks at just 2U in height.

The system accepts an extremely wide 85-300 VAC input range, including 220 VAC single-phase and 220/380 VAC three-phase supplies, and outputs adjustable 42-58 VDC with a 53.5 VDC default. Rectifiers and the SMU01A/B/C monitoring unit are fully hot-swappable, and a rectifier dormancy function raises overall system efficiency at partial load.

Natural cooling eliminates fans and associated maintenance, and the front-cabling, front-maintenance architecture suits shallow cabinets. Intelligent battery management and protection extend battery lifespan, while environmental monitoring and remote management are supported through dry contacts, serial interfaces or Ethernet. The system is rated IP20 and documented to IEC 60950-1.

Key Features

• 2U embedded power system, 90 A rated / 4.8 kW maximum output
• Wide 85-300 VAC input, 220 VAC single-phase or 220/380 VAC three-phase
• Hot-swappable 15 A / 30 A rectifiers (R4830G1 up to 96% max efficiency)
• Natural cooling with front cabling and front maintenance
• Intelligent battery management and rectifier dormancy for efficiency
• IP20; IEC 60950-1; remote management via dry contact, serial or Ethernet

Specifications

Key Features of ETP4890-A2 Embedded 48V

ETP4890-A2 Embedded 48V is part of the 48 V DC power system family widely used in telecom and data applications. Systems of this class commonly combine rectifier modules, monitoring controllers and distribution units in rack or cabinet formats.

Typical Applications of ETP4890-A2 Embedded 48V

DC power systems of this type are widely used in telecom equipment rooms, base station sites, data centers and industrial control environments that require reliable -48 V DC power.

Selecting ETP4890-A2 Embedded 48V with BS Comtec

BS Comtec supplies DC power systems and rectifier modules from Vertiv, Huawei, ZTE, Eltek and other brands with global delivery. Tell us your load budget, battery requirements and installation space for a tailored proposal.

Embedded Deployment Scenarios and Configuration Notes

The 2U, 19/21-inch chassis with front cabling and natural cooling makes the ETP4890-A2 a fit for shallow indoor cabinets and equipment rooms where fan noise and rear access are constraints. The 85–300 VAC input window accepts single-phase 220 VAC or three-phase 220/380 VAC, so the same system serves stable grid rooms as well as generator-fed sites in Africa, the Middle East and South America without input-side modifications.

Rectifier population is flexible: 15 A and 30 A high-efficiency modules (R4830G1 class) combine up to the 90 A rated output — for example three 30 A modules, or two 30 A plus two 15 A modules — and one additional hot-swap slot can be kept as N+1. The SMU01A/B/C controller sits behind the front panel with an LCD, and DC distribution is handled by the battery breaker and BLVD low-voltage disconnect outputs listed in the specification table above.

• Access network nodes: a 90 A class DC plant for BBU, transmission and microwave equipment in just 2U of rack space.
• Enterprise equipment rooms: −48 V distribution with intelligent battery management for lithium or VRLA backup strings.
• Outdoor cabinet retrofits: front-maintenance layout for shallow enclosures, with remote monitoring via dry contacts, RS232/RS485 or Ethernet through the SMU controller.

Frequently Asked Questions

How do I size ETP4890-A2 Embedded 48V for my site?

Start from your steady-state and peak DC load, redundancy requirements (N+1 or 2N), battery backup time and expansion plans. BS Comtec can model these figures and propose a suitable configuration.

Can ETP4890-A2 Embedded 48V work with my existing rectifiers or batteries?

It depends on voltage range, communication protocols and mechanical compatibility. Provide your current system details and BS Comtec will review interfaces and recommend a compatible combination.

How is ETP4890-A2 Embedded 48V shipped and delivered?

Systems and modules are packed for international freight, and lead times vary by model and destination. Contact BS Comtec for current availability, shipping options and delivery schedules.

What warranty and support come with ETP4890-A2 Embedded 48V?

Warranty follows the manufacturer’s policy for the ordered configuration. BS Comtec assists with commissioning guidance, spare module supply and service coordination where required.

Where is ETP4890-A2 Embedded 48V typically deployed?

It is commonly deployed in telecom central offices, outdoor cabinets, data centers and industrial facilities that rely on stable -48 V DC distribution.

What are the key specifications of ETP4890-A2?

ETP4890-A2 key specs: -48 VDC (42-58 VDC adjustable, 53.5 VDC default); 90 A; 3U, 19-inch plug-in frame. Full datasheet and test report available from BS Comtec on request.

Does BS Comtec supply ETP4890-A2?

Yes. BS Comtec supplies ETP4890-A2 (Huawei line) from Singapore stock, MOQ from 1 piece; in-stock items dispatch within 24-48 hours with worldwide shipping.

Is there a cross-reference or equivalent for ETP4890-A2?

BS Comtec maintains a cross-reference chart covering Huawei, Vertiv (Emerson), Eltek, ZTE and Delta 48V modules. Contact us for the direct equivalent of ETP4890-A2.