48V High-Frequency Switching Single Output DC Power Supply EVS-4890P 30-90A IP55 Protection 95% Efficiency Industrial Use

Product Description

Our Products
48V Switching DC Power Supply
DC Power Supply Details
Power Supply Inner View
Key Features
48V High-Frequency Switching DC Power Supply for Wall Integration
  • Adopts active power factor compensation technology, with power factor up to 0.99.
  • AC input voltage normal operating range is as wide as 90 ~ 280V.
  • Adopts full bridge soft switching technology, enabling efficiency to reach above 92%.
  • Perfect battery management: low voltage load disconnect (LVLD) and low voltage battery disconnect (LVBD) to achieve temperature compensation, automatic float control, automatic voltage regulator, battery capacity calculation, and online battery test function.
  • Switching Power Supply for System integration adopts no-damage hot insert and pull technology, with replacement time under 1 minute.
  • Networked design provides a variety of communication interfaces (e.g., RS485, dry contact). Flexible networking achieves local and remote monitoring for unattended operation.
  • Features perfect AC and DC side lightning protection design, ideal for multi-thunderstorm areas.
  • Complete fault protection and comprehensive fault alarm functions.
  • Comprehensive operation and maintenance design, support for wall-mounting, saving space effectively.
  • Ultra-low radiation. Utilizes advanced electromagnetic compatibility design, meeting the conducted and radiated interference requirements of telecommunications industry standards.
  • Safe and reliable system design in full compliance with safety standards EN60950 and GB4943.
Technical Specifications
System Integration Configuration
Configuration Rectifier Module Qty Distribution Monitoring Remark
Optional Configuration 30A 1-3 pcs AC Distribution: AC220V input
Load Output: 10A-90A
Monitor Included Specific index refers to module specification
Power System Performance Index - Input
Parameter Min. Rated Max. Unit Note
Rated working voltage - 110/220 - Vac -
Input voltage 90 220 280 Vac Three-phase five-wire input phase-to-phase 380V / relative zero line 220VAC
Input frequency 43 50 67 Hz -
Battery input 40 48 60 Vdc Battery pack positive and negative in parallel with DC output of rectifier module
Power System Performance Index - Output
Parameter Min. Rated Max. Unit Note
Output voltage range 42 48 58 Vdc -
Output current range 0 - 90 A Input 170 ~ 285VAC; output derates when input voltage falls below 170VAC
Regulation accuracy - - ±1 % -
Load regulation - - ±1 % -
Source regulation - - ±1 % -
Current sharing regulation - - ±5 % -
Ripple (peak-to-peak) - - 200 mv Network 20MHz testing
Output efficiency 91 93 ±1 % 220Vac Input
Exhibitions & Events
Hong Kong Electronics Fair
Hong Kong Electronics Fair
CES Exhibition
CES - Engaging with Global Customers
IFA Exhibition
Participation in IFA Berlin
Hong Kong Spring Fair
Hong Kong Spring Exhibition
Collaborations with Universities
South University of Science and Technology of China Logo
South University of Science and Technology of China
Sun Yat-sen University Logo
Sun Yat-sen University (SYSU)
Shenzhen University Logo
Shenzhen University
Profile & Strength

With years of export experience along with excellent quality, advanced services, and competitive prices, we have won numerous customers' trust and support globally.

Manufacturing Area
Production Process
Testing Laboratory
Quality Inspection
Product Certifications
Certification Certificate 1
Certification Certificate 2
Certification Certificate 3
Certification Certificate 4
Packing & Delivery

Packaging Details: Export standard packing: Plastic bag + Bubble bag + Inner carton + Outer carton. Customized packaging is acceptable. We can also provide small and large PVC packing solutions based on customer needs.

Delivery Detail: 3-5 days after order confirmation.

Frequently Asked Questions
Why choose our products?
We deliver top-quality products coupled with professional service. Creating a win-win business relationship is our primary operating principle.
What types of products do you manufacture?
We offer comprehensive solutions including switching power supplies, matching high, middle, and low-level specifications. Our units are widely compatible with major brands of electronic devices such as PCs, TVs, laptops, and mobile communication equipment.
Are you a factory or a trading company?
We are an experienced manufacturer providing comprehensive OEM/ODM custom development services to meet your specific industry requirements.
Can you develop custom moulds based on customer requests?
Yes, we have professional in-house structural and electrical design capabilities to open custom moulds as requested.
What is your warranty and after-sales service policy?
We provide a one-year warranty on our hardware. 0.3% spare parts are included directly in your batch shipment. For any verified quality problems, we offer standard product exchange support.
What payment and logistics methods do you support?
We accept L/C, T/T, Western Union, MoneyGram, and PayPal. Delivery options include ocean freight as well as express services like DHL, UPS, FEDEX, TNT, and EMS. Sample orders usually ship within 24 hours, and standard order lead time is within 3 days.

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