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UAVMODEL

WF-800S50-4K power supply

Name: WF-800S50-4K power supply
Brand: UAVMODEL
SKU: WF-800S50-4K
Price: 2157.00 USD
Availability: InStock

$2,157.00

WF-800S50-4K

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Tag : battery power supply , drone power supply , Power Supply

1. Overview

1.1 Application Occasions

This high-voltage DC power supply is a custom-made special power supply, featuring small size, light weight, high efficiency, and built-in fan for heat dissipation. Its maximum operating efficiency is ≥97%. The power module adopts an aluminum shell design, which is lightweight, aesthetically pleasing, and waterproof. It can be used as a substitute for imported high-voltage DC module power supplies.

1.2 Product Features

DC-DC Isolated Power Converter: Converts the input 800V DC power into 50V DC power in an isolated manner, with a total output power of 4000W.
High power density, small size, and light weight.
Designed to meet power supply reliability requirements: Equipped with over/under voltage protection for input, and overvoltage protection, current limiting, short-circuit protection, and overtemperature protection for output.

1.3 Product Photos

(Photos to be inserted here)

1.4 Main Product Specifications

Input Voltage Range	Rated Output Voltage	Maximum Output Power	Efficiency	Voltage Regulation Accuracy	Output Ripple and Noise
680~800Vdc	50±0.5Vdc	4000W	≥97%	≤±1%	≤±2%Vo

2. Environmental Conditions

Serial No.	Item	Technical Index	Unit	Remarks
1	Operating Temperature	-40℃~+50℃	℃
2	Storage Temperature	-40℃~+80℃	℃	/
3	Relative Humidity	≤95	%	No condensation (40℃±2℃)
4	Altitude	0-2000	m
5	Atmospheric Pressure	76~106	Kpa	/
6	Heat Dissipation Method	Built-in Air Cooling	/	/

3. Electrical Characteristics

3.1 Input Characteristics

Serial No.	Item	Technical Requirement	Unit	Remarks
1.1	Rated Input Voltage	750	Vdc
1.2	Input Voltage Range	680~800	Vdc
1.3	Maximum Input Current	7	A	In=680Vdc, Po=4000W

3.2 Output Characteristics

Serial No.	Item	Technical Requirement	Unit	Remarks
2.1	Rated Output Voltage	50	Vdc	/
2.2	Output Voltage Range	47~50.5	Vdc
2.3	Rated Output Current	80	A	/
2.4	Maximum Output Current	88	A	/
2.5	Maximum Output Power	4000	W	/
2.6	Output Efficiency	≥97	%	In=750Vdc, Half Load
2.7	Voltage Regulation Accuracy	±1	%	/
2.8	Source Regulation	±1	%	/
2.9	Load Regulation	±1	%	/
2.10	Output Ripple and Noise	±2	%/Vo	Bandwidth limited to 20MHz; 10uF electrolytic capacitor and 0.1uF film capacitor connected in parallel at the test terminal; Rated load
2.11	Temperature Coefficient	±0.02	%/℃	/
2.12	Output Rise Time	≤200	ms	/
2.13	Power-on Output Delay	≤5	S	Rated input
2.14	Power-on/Power-off Overshoot Amplitude	△V: ≤±5	%	/
2.15	Dynamic Response Overshoot	△V: ≤±5	%	25%~50%~25% or 50%~75%~50% load change, 25℃
2.16	Dynamic Response Recovery Time	≤2	ms	25%~50%~25% or 50%~75%~50% load change, 25℃

3.3 Protection Characteristics

Serial No.	Item	Technical Requirement	Unit	Remarks
3.1	Input Undervoltage Protection	620~640	Vdc
3.2	Input Undervoltage Recovery	≤650	Vdc	Hysteresis >10V
3.3	Input Overvoltage Protection	810~830	Vdc
3.4	Input Overvoltage Recovery	≥800	Vdc	Hysteresis >10V
3.5	Input Reverse Connection Protection	No damage in case of reverse connection	-	Input 800Vdc reversed
3.6	Output Overvoltage Protection	55~59	Vdc	Self-recoverable
3.7	Output Overcurrent Protection	86~95	A	Self-recoverable
3.8	Output Short-Circuit Protection	Available	-	Self-recoverable
3.9	Overtemperature Protection	Available	℃	Self-recoverable

3.4 Parallel Current Sharing

Serial No.	Item	Technical Requirement	Unit	Remarks
4.1	Current Sharing Imbalance Degree	≤5	%	Output >50% LOAD
4.2	Parallel Connection Method	Current sharing bus signals connected in parallel; load outputs connected in parallel	-
4.3	Maximum Parallel Quantity	≤8	PCS

4. Safety Characteristics

Serial No.	Item	Test Condition	Remarks
1	Dielectric Strength	Input to Output: 2500Vdc/2mA/1min Input to Enclosure: 2000Vdc/2mA/1min Output to Enclosure: 500Vdc/2mA/1min	No arcing, no breakdown
2	Insulation Resistance	Input to Output: ≥10MΩ @ 500Vdc Input to Enclosure: ≥10MΩ @ 500Vdc Output to Enclosure: ≥10MΩ @ 500Vdc	Under normal atmospheric pressure, relative humidity 90%, test DC voltage 500V

5. Other Characteristics

5.1 Flame Retardant Requirement

The flame retardant grade of the PCB used in the system shall meet the V-0 requirement specified in GB4943.1-2011.
The flame retardant grade of the insulated cables shall meet the requirements specified in GB/T 18380.12-2008.
The flame retardant grade of other insulating materials shall meet the V1 requirement specified in GB4943.1-2011.

5.2 System Noise

The system noise shall not exceed 55dB(A).

5.3 System Reliability

MTBF (Mean Time Between Failures) ≥ 100Khour;
Test Conditions: 25℃, rated input, full-load output, estimated by MIL-HDBK-217F Notice2 stress method.

5.4 Protection Grade

The protection grade shall meet the IP54 requirement. No water accumulation is allowed on the top of the power supply enclosure.

5.5 Three-proof (Moisture-proof, Mildew-proof, Salt Spray-proof)

The printed circuit boards, connectors, and other circuits in the product shall be treated with moisture-proof, mildew-proof, and salt spray-proof measures. Among them, the salt spray resistance shall meet the requirements in Table 9 of GB/T 4797.6, enabling the product to operate normally in outdoor humid and salt spray environments.

6. Product Label

7. Mechanical Dimensions and Connector Definition

8. Packaging, Transportation, Storage

8.1 Packaging

The packing box shall be marked with product name, model, manufacturer's logo, inspection certificate from the manufacturer's quality department, manufacturing date, etc.
An accessory list shall be included in the packing box.

8.2 Transportation

The product shall be packed in a sturdy packing box during transportation.
The exterior of the box shall comply with the provisions of relevant national standards and be marked with signs such as "Handle with Care" and "Moisture-proof".
The packing boxes containing the products can be transported by any means of transportation.
During transportation, direct exposure to rain and snow and mechanical impact shall be avoided.

8.3 Storage

Unused products shall be stored in the packing boxes.
The warehouse environment shall have a temperature of -10℃~40℃ and a relative humidity not exceeding 80%.
The warehouse shall be free of harmful gases, flammable and explosive products, and corrosive chemicals. There shall be no strong mechanical vibration, impact, or strong magnetic field.
The packing boxes shall be placed at least 20cm above the ground and at least 50cm away from walls, heat sources, windows, or air inlets.
The storage period under the specified conditions is generally 2 years. After 2 years, the product shall be re-inspected before use.

9. Safety Precautions

Once the safety protection of the equipment is damaged, the equipment must be stopped and handled in accordance with the relevant maintenance regulations.
When the power supply equipment is moved from a cold environment to a warm environment, condensation may cause electric leakage hazards. Therefore, the grounding requirement must be strictly implemented; only qualified personnel are allowed to connect the equipment to the power supply.
Before conducting maintenance on the power supply equipment, the power supply must be cut off and the equipment must be shut down for 5 minutes to allow sufficient time for the capacitors to discharge.
Pay attention to safety in use: Avoid touching parts marked with safety warning signs or high-voltage signs to prevent electric shock or burns.

10. Referenced Standards and Specifications

GB/T 2423.1-2001 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test A: Low Temperature
GB/T 2423.2-2001 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test B: High Temperature
GB/T 2423.3-1993 Basic Environmental Testing Procedures for Electrical and Electronic Products - Test Ca: Steady Damp Heat Test Method
GB/T 2423.4-1993 Basic Environmental Testing Procedures for Electrical and Electronic Products - Test Db: Alternating Damp Heat Test Method
GB/T 2423.5-1995 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test Ea and Guidance: Shock
GB/T 2423.6-1995 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test Ea and Guidance: Bump
GB/T 2423.8-1995 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test Ed: Free Fall
GB/T 2423.10-1995 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test Fc and Guidance: Vibration (Sinusoidal)
GB/T 2423.11-1997 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test Fd: Broadband Random Vibration - General Requirements
GB/T 2423.22-2002 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test N: Temperature Change
GB/T 14508-93 Mechanical Environmental Conditions for Grade Highway Freight Transportation
EN55022:1998 Information Technology Equipment - Radio Disturbance Characteristics - Limits and Measurement Methods
EN55024:1998 Information Technology Equipment - Immunity Characteristics - Limits and Measurement Methods
CEI IEC 61000-4-2 2001 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Electrostatic Discharge Immunity Test
CEI IEC 61000-4-3 2002 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Radiated, Radio-Frequency, Electromagnetic Field Immunity Test
CEI IEC 61000-4-4 1998 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Electrical Fast Transient/Burst Immunity Test
CEI IEC 61000-4-5 1999 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Surge (Impact) Immunity Test
CEI IEC 61000-4-6 2001 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Immunity to Conducted Disturbances, Induced by Radio-Frequency Fields
CEI IEC 61000-4-8 1993 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Power Frequency Magnetic Field Immunity Test
CEI IEC 61000-4-11 1994 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Voltage Dips, Short Interruptions and Voltage Variations Immunity Tests
CEI IEC 61000-4-29 2000 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Voltage Dips, Short Interruptions and Voltage Variations Immunity Tests for DC Input Ports
IEC 61000-3-2 2001 Electromagnetic Compatibility (EMC) - Limits - Limits for Harmonic Current Emissions (Equipment Input Current ≤16A per Phase)
IEC 61000-3-3 1994 Electromagnetic Compatibility (EMC) - Limits - Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems (Equipment Rated Current ≤16A)
GB4943-2001 Safety of Information Technology Equipment
YD/T 282-2000 General Reliability Test Methods for Communication Equipment
GB/T 13722-92 Technical Requirements and Test Methods for Mobile Communication Power Supplies
YD/T 732-95 Inspection Methods for DC-DC Converters for Telecommunication
YD/T 731-2002 High-Frequency Switching Rectifiers for Telecommunication
GB14287.1-2005 Electrical Fire Monitoring Systems - Part 1: Electrical Fire Monitoring Devices

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