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UAVMODEL

AF-400S48-3.5K power supply

$1,356.00

Order ships in 30~40days business days.

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Tag : drone power supply , Power Supply

Product Specifications

Model: AF-400S48-3.5K
Internal ID:
Version: V1.0
Date: March 3, 2025

Overview

  1. The power supply is compact, lightweight, and has a high waterproof rating.

  2. It has a long lifespan, quick dynamic response, and high efficiency.

  3. Seamless switching with no voltage transients.

  4. The power supply adopts a highly reliable modular design.

  5. Widely used in tethered drones for power supply and H-control type DC motor power supply.

Function Description

  • Input range: 360-410Vdc

  • Output: 44Vdc-51.2Vdc/75A

  • Rated power: 3200W, transient 5000W

  • The power supply has overcurrent protection, short circuit protection, overvoltage protection, and overtemperature protection.

Environmental Conditions

Item Minimum Typical Maximum 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 Level IP55 IP55 IP55 IP55

Input Basic Characteristics

Item Minimum Value Typical Value Maximum Value Unit Remarks / Conditions
Input Voltage Range 360 390 410 Vdc
Maximum Limit Input Voltage 420 450 Vdc The power supply will not be damaged under this condition
Maximum Input Current - - 12 A Vin=360Vdc, output rated load
Input Inrush Current - - 75 A Vin=410Vdc, output full load
Power-on Startup 360 390 410 V Startup with half of the rated power load or lower

2 Output Basic Characteristics

Item Minimum Value Typical Value Maximum Value Unit Remarks / Conditions
Output Voltage Range 44 48 52.2 Vdc
Load Regulation - - ±15 %
Load Regulation - - ±15 %
Efficiency 95 97.5 98 % Input: 390-410Vdc, Output: full load
Ripple and Noise - 110 280 mVp-p 20MHz bandwidth limitation
Output Current - 50 80 A
Output Overvoltage Protection 56 V
Output Voltage Overshoot Amplitude - - ±5 %
Transient Response Overshoot Amplitude - - ±5 % Ta=25℃, 50%-75%-50% load step change, di/dt=0.1A/µs
Recovery Time - - 200 µs
Temperature Coefficient - - ±0.02 %/℃

Protection Characteristics

Item Minimum Value Typical Value Maximum Value Unit Remarks / Conditions
Input Undervoltage Protection 200 226 250 V Self-recoverable
Input Overvoltage Protection 420 436 450 V
Output Overcurrent Protection 120 A Latching, normal operation after restart
Output Short-Circuit Protection Available Latching, normal operation after restart
Overtemperature Protection Function Available Self-recoverable
Power Supply Parallel Operation Parallel current sharing and redundancy function

Other Specifications

Item Requirement Remarks
Three-Proof Design PCB coated with three-proof paint
Heat Dissipation Forced air cooling
MTBF ≥100K H
Overall Weight ≤1.3kg
Power Supply Indicator 3 green lights stay on during operation, off otherwise The indicator light is inside the power supply

Safety Characteristics (3)

Item Level Standard (or Test Condition)
Insulation Withstand Voltage Input to Output 2000 Vac No breakdown, no arcing. Test condition: 5mA/min, rising rate 500V/s
Input to Earth 1000 Vac
Output to Earth 500 Vdc
Insulation Resistance Input to Output ≥50 Test voltage: 500Vdc under normal atmospheric pressure and 90% relative humidity
Input to Cabinet ≥50
Output to Cabinet ≥50

EMC Characteristics

Item Level (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 Line-line ±1KV, Line-earth ±2KV. Criterion see Note B. Both input and output need to meet the requirement
ESD Contact discharge: ±6KV. Criterion see Note B
GB/T 17626.2-2006 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

User Instructions

User Instructions

Please confirm to read the Warning and Precautions section before using the product. Improper 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 it 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.

Precautions:

Ensure that the input/output terminals and signal terminals of the product are connected correctly in accordance with the product manual; cut off the input power when wiring. Use the power supply within the technical parameters; using it beyond the range may cause damage to the product.The risk of electric shock at the output terminal during product use must be considered to ensure that end-users will not come into contact with the product; terminal equipment manufacturers must design corresponding protection schemes to ensure that no danger is caused by accidental contact of engineers or tools with 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

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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.

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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.

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