1 4

UAVMODEL

AF-400S50-4K Power Supply

$1,430.00
AF-400S50-4K

Order ships in 30~40days business days.

Checkout Securely with

American Express
Diners Club
Discover
Google Pay
JCB
Maestro
Mastercard
PayPal
Union Pay
Visa

Customers who can not place an order please contact us;

Tag : drone power supply , Power Supply

1. Overview

This power supply adopts the latest soft-switching technology and operates in an open-loop mode, with an input-output ratio of 8:1. It is equipped with input over-voltage and under-voltage protection, as well as output over-voltage and over-current protection. Additionally, it features a compact size, light weight, and waterproof function (IP65), making it widely applicable to devices such as unmanned aerial vehicles (UAVs). Its characteristics are as follows:
  1. Long service life, fast dynamic response, and high efficiency;
  2. Seamless switching with batteries, no voltage transient drop;
  3. High-reliability modular design;
  4. Widely used as a power supply for tethered lighting UAVs.

1.1 Purpose

This power supply specification is for a customized power supply developed for design and development purposes. Its functions are:
  • Serving as the basis for design and development by the R&D department;
  • Serving as the basis for production and inspection by the production department;
  • Serving as the basis for inspection and qualification judgment by the quality department;
  • Serving as the basis for customers to select power supplies.

1.2 Scope of Application

This document specifies the specifications of the AF-400S50-4K power supply designed by our company. It can be used as the basis for production operations by the production and quality departments, and also as a reference for customers in selecting power supplies.

2. Functional Description

This document is the specification for the AF-400S50-4K power supply. It has a rated input range of 360-430Vdc, an output of 45-53.5Vdc/80A, a rated power of 3500W, and a peak power of 4300W. The power supply is equipped with output over-current protection, output short-circuit protection, output over-voltage protection, and over-temperature protection functions.

3. Operating Environment

Parameter Minimum Value Typical Value Maximum Value Unit Remarks/Conditions
Operating Temperature -40 - +55 Forced Air Cooling
Storage Temperature -55 25 +105
Relative Humidity 5 - 95 % No Condensation
Storage Humidity 5 - 95 % No Condensation
Atmospheric Pressure 54 - 106 kPa
Altitude - - 5000 m
Protection Class IP65

4. Electrical Characteristics

4.1 Basic Input Characteristics

Item Minimum Value Typical Value Maximum Value Unit Remarks/Conditions
Rated Input Voltage Range 360 400 430 Vdc Full Load Mode
Maximum Limit Input Voltage 410 415 450 Vdc The power supply will not be damaged under this condition
Maximum Input Current - - 11 A Vin=360Vdc, Output Rated Load
Input Inrush Current - - 50 A Vin=410Vdc, Output Full Load
Start-up with Load 360 400 430 V Rated Power Below 5A

4.2 Output Characteristics

4.2.1 Basic Output Characteristics

Item Minimum Value Typical Value Maximum Value Unit Remarks/Conditions
Output Voltage 1 Range 45 50 53.5 Vdc
OUT Load Regulation - - ±3 %
OUT Load Regulation - - ±5 %
Efficiency 97 98 98.3 % Input 380-420Vdc, Output Full Load
Ripple and Noise 350 - 430 mVp-p 20MHz Bandwidth Limitation
OUT Current - 70 80 A
Output Voltage Overshoot Amplitude - ±5 - %
Transient Overshoot Amplitude - ±5 - % Ta=25℃, 50%-75%-50%, di/dt=0.1A/µs Load Step Change
Transient Recovery Time - 200 - µs Ta=25℃, 50%-75%-50%, di/dt=0.1A/µs Load Step Change
Temperature Coefficient - ±0.02 - %/℃

4.2.2 Protection Characteristics

Item Minimum Value Typical Value Maximum Value Unit Remarks/Conditions
Input Over-Voltage Protection 455 460 465 V
Input Under-Voltage Protection 310 315 320 V
Output Over-Current Protection - 105 - A Locked, returns to normal after restart
Output Short-Circuit Protection Available - - - Locked, returns to normal after restart
Over-Temperature Protection Function Available - - - Self-recoverable
Power Supply Parallel Operation - Passive Current Sharing for Parallel Operation - -

4.3 Other Specifications

Item Requirement Remarks
Three-Prevention Design PCB Coated with Three-Prevention Paint
Heat Dissipation Forced Air Cooling
MTBF ≥100K H
Overall Weight ≤0.8 kg
Power Supply Indicator 2 Green LEDs Stay On During Operation, Turn Off Otherwise Built-in

5. Safety Specifications

Item Grade Standard (or Test Condition)
Insulation Withstand Voltage Input to Output 3000 Vdc No Breakdown, No Arcing. Test Condition: 5mA/min, Rise Rate 500V/s
Input to Earth 1500 Vdc No Breakdown, No Arcing. Test Condition: 5mA/min, Rise Rate 500V/s
Output to Earth 500 Vdc No Breakdown, No Arcing. Test Condition: 5mA/min, Rise Rate 500V/s
Insulation Resistance Input to Output ≥50 Under normal atmospheric pressure, relative humidity 90%, Test Voltage: 500Vdc
Input to Cabinet ≥50 Under normal atmospheric pressure, relative humidity 90%, Test Voltage: 500Vdc
Output to Cabinet ≥50 Under normal atmospheric pressure, relative humidity 90%, Test Voltage: 500Vdc

6. EMC Characteristics

Item Grade (Standard) Remarks (Index Requirement)
Surge IEC61000-4-5, LEVEL 3 Criterion see Note 1) A, Input Differential Mode: ±1kV, Common Mode: ±2kV, External Filter Circuit Required
EFT IEC61000-4-4 LEVEL 3 471KD14J Paralleled at Input End, Line-Line ±1KV, Line-Earth ±2KV. Criterion see Note B
ESD GB/T 17626.2-2006 Contact Discharge: ±6KV. Criterion see Note B
Air Discharge: ±8KV. Criterion see Note B
Conducted Emission (CE) EN55022 With EMC Filter, Class A
Radiated Emission (RE) EN55022 With EMC Filter, Class A

7. Wiring Diagram for Use

INPUT: High-Voltage Input, OUTPUT: High-Voltage DC Output, LOAD: Output Load, BAT: Battery

Bottom View

7.1 Definition of Input and Output Connectors

7.1.1 Input Matching Terminals
The input matching terminals are: AMS XT30U or XT30PW female sockets

Input Connector Diagram

7.1.2 Output Matching Terminals
The output matching terminals are: AMS XT90-F or XT90PW-F female sockets

Output Connector Diagram

8. Structure and Installation Dimensions

Overall Dimensions: 150mm106mm54mm; Installation Dimensions: 110mm*98mm, supported by hexagonal copper pillars
Unspecified Dimension Tolerance: ±0.3mm

9. User Instructions

Before using the product, please make sure to read the Warnings and Cautions section. Incorrect operation may cause damage to the power supply or accidents.

Warnings:

  • When the power is on, keep hands and face away from the product to avoid accidental injury.
  • Do not modify or disassemble the product by yourself, as this may damage the product or cause accidents.
  • There are high-voltage and high-temperature areas inside the product. Do not touch internal components to avoid electric shock or burns.

Cautions:

  • Ensure that the input/output terminals and signal terminals of the product are connected correctly in accordance with the product manual. Please cut off the input power when wiring. Use the power supply within the range of technical parameters; otherwise, it may cause damage to the product.
  • The risk of electric shock at the output terminal during product use must be considered, and it is necessary to ensure that end-users cannot access the product. Manufacturers of terminal equipment must design corresponding protection schemes to ensure that no danger is caused by engineers or tools accidentally touching the power supply terminals during operation.

FAQS

1. HOW DO I PLACE MY ORDER?

  • Simply choose your style on the product page then click the “Add To Cart” button and follow the simple steps to complete your order.
  • We’ll prepare your order and let you know when it's on its way!

2. HOW LONG WILL IT TAKE TO SHIP MY ORDER?

  • Orders typically ship within 5 to 10 business days. For international orders, transit will take an additional 1 to 2 weeks.

3. MY TRACKING NUMBER ISN’T WORKING

  • Tracking numbers can take 3-5 days to appear in the shipping carrier's system. Occasionally, the shipping carrier can lose an order. If the tracking number is still not working within a few days, please contact the shipping carrier.

4. I NEED HELP WITH A LATE ORDER

  • Orders typically ship within 5 to 8 business days. For international orders, transit will take an additional 1 to 2 weeks.
  • If your order has not arrived after 10 business days (domestic) and 20 business days (international), please contact our team, we are happy to assist.
  • Products that need to be customized, production time is 10-25 days to ship, product details will be announced.

5. We accept the following secure payment methods:

Credit Cards (via Airwallex):

  • Visa / Mastercard / American Express
  • Secured by Airwallex, a global compliant payment platform

Third-Party Payments:

  • PayPal (Personal & Business Accounts)

Bank Transfer:

  • Corporate Account Transfer (SWIFT/IBAN Supported)

6. WHEN WILL MY CARD BE CHARGED?

Just after your order has been successfully placed.

7. HOW SECURE IS MY PERSONAL INFORMATION?

  • We adhere to the highest industry standards to protect your personal information when you checkout and purchase.
  • Your credit card information is encrypted during transmission using secure socket layer (SSL) technology, which is widely used on the Internet for processing payments. Your credit card information is only used to complete the requested transaction and is not subsequently stored.

7.Shopping safety guaranteed

We use PAYPAL to collect payment. For details, you can check the official website of PAYPAL to guarantee your shopping funds.

https://www.paypal.com/webapps...

8.What delivery?

We cooperate with DHL, FedEx, EMS shipping companies, you can choose freely when placing orders;

9.Refund issue?

Due to the buyer's own reasons, resulting in a refund. This website will not be responsible for the payment of processing fees including returning shipping cost. 

Made-to-order products: Once a customer submits an order, the product will immediately go into production. Given its customized nature and the immediacy of production, such orders become binding upon confirmation and no refunds will be accepted.

All products that require production time are classified as customized products.

Consult details

10、Answer: Customs clearance responsibility depends on trade terms (e.g., EXW, FOB, DDP). Generally:

  • Our Default Terms: The customer (consignee) must handle clearance and pay all duties/taxes.
  • Exceptions: If your order states "DDP (Delivered Duty Paid)", we will handle clearance.

11、Answer: Typically required documents:

  • ID (e.g., passport) or business tax number;
  • Commercial invoice (contact us after purchase);
  • Tip: Contact your local customs in advance!

12、Answer: Duties are determined by your country’s customs based on product type, value, and regulations. To estimate costs:

  • Check your local customs website;
  • Use third-party tools (e.g., Avalara, DutyCalculator).

13、Answer:

  • Delays: Contact customs directly to submit documents/payments. We can provide tracking numbers or invoices.
  • Destruction: Losses due to unresponsive clearance will be borne by the customer.
  • Exceptions: If caused by our documentation errors, contact us for support.

14、Answer: You will receive a commercial invoice and packing list via email. For other documents, contact sales@uavmodel.com (response within 24 hours).

15、Answer: The following products may be seized or rejected:

  • Prohibited items in your country (e.g., cosmetics with banned ingredients);
  • Products without required certifications (e.g., electronics lacking CE marks);
  • Under-declared value (may raise tax evasion suspicions).

If you pay by credit card, your payment could be somehow denied at the checkout by our system in defense against possible credit card fraud. It's a good idea to call your credit card company or bank ahead of time to let them know about the purchase so that it doesn't get declined.
Under such circumstance, here are 3 solutions for you:
1. If you have a PayPal account, please try to pay by PayPal.
2. Please switch to your other credit/debit cards.
3. If you do not have a PayPal account, please select PayPal still at the checkout page & click the complete order button. Then you'll be directed to a page with access to both PayPal and Debit/Credit card payment (for the latter option, you don't have to register for PayPal).
As following steps:


Step 1. Select PayPal (even if you don't have a PayPal account)


Step 2. Click on "Pay with Debit or Credit Card".


Step 3. Fill in your credit card info and complete your order.

Bank transfer information:

Account Number: 63001185921
Holder Name: Xiamen Gaoteng Trading Co., Ltd.
Support Currency: AUD CAD CHF DKK EUR GBP HKD JPY NOK NZD SEK SGD USD ZAR
Bank Name: JPMorgan Chase Bank N.A. Hong Kong Branch
Bank Location Country: HONG KONG, CHINA
Bank Address: CHATER HOUSE, 8 CONNAUGHT ROAD, CENTRAL, HONG KONG
Account Type: Current
Swift/BIC: CHASHKHH (CHASHKHHXXX,If 11 characters are required)
Routing Number: 007863
Bank Code: 007
Branch Number: 863
Please include the following memo/message to receiver when making a payment: [Buyer Name][Invoice/Contract Number][Product]

UAVMODEL

Ownership:

UAVMODEL CO., LTD.; 

ZHANGZHOU YICHENG TECHNOLOGY CO., LTD.;

XIAMEN GAOTENG TECHNOLOGY CO., LTD.

Email:Sales@uavmodel.com

Phone: +8613015671328

313, No.25, Jingxia Road, Wenpu Industrial Park, Jiaomei Town, Taiwan Investment Zone,

Unit 2502-3, No.1110, Jimei North Road, Software Park, Torch High-tech Zone, Xiamen

产品图片1 产品图片2

What we really do?

UAVMODEL is a leading UAV airframe manufacturer. Our UAV platforms serve professional needs in industrial inspection, gas and oil, precision agriculture, mapping, public safety, construction, forestry and defense.

10+ Years of Experience

500+ Successful Cases

12+ Industry Awards

Our Vision

We are committed to the R&D of medium and large UAVs and specialized UAV technologies for complex environments. Our focus includes design, production, testing, sales, and service, providing comprehensive solutions based on our technology.

愿景图片1 愿景图片2

100% Client Satisfaction is Our Priority

Using Complex & Reliable Digital Solutions

High Customer Support Standards

Working with Leading Market Experts

Cooperate with Us!

Professional and friendly customer service.
Free or affordable shipping.
Multiple payment options: PayPal, Credit Card and Bank Transfer.
UAVMODEL is acceptable.
Fast and reliable shipping with proper product declaration.

运输图片

Support 24/7

24/7 Live Technical Expertise and Support
Speak with our Engineers for Answers and Advice
Customer Portal for Support Requests and Account Management


© 2025 UAVMODEL. All rights reserved.

Fast&Worldwide Shipping

Free Delivery on Same Products!

Easy Returns Policy

Please See Return Policy Detail!

100% Secure Checkout

All transactions securely handled

130-1567-1328

sales@uavmodel.com