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AF-400S48-3.5K power supply
AF-400S48-3.5K power supply
AF-400S48-3.5K power supply

AF-400S48-3.5K power supply

Regular price $1,356.00

AF-400S48-3.5K

Specifications
AF-400S48-3.5K power supply
Regular price $1,356.00

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 MΩ Test voltage: 500Vdc under normal atmospheric pressure and 90% relative humidity
Input to Cabinet ≥50 MΩ
Output to Cabinet ≥50 MΩ

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.
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