Switching Power Supply 220V 28V71A Wide Voltage up to 2000W

• Customization: Available
• Output Type: Single
• Warranty: 1 Year
• Model NO.: WTS-2000W-71A
• Output Power: >500W
• Input Voltage: 220V
• Connection Mode: Series Switching Power Supply
• Starting Mode: Self-excited Switching Power Supply
• Voltage Regulating Mode: Frequency Modulation Type
• Power Supplying System: Terminal Power Distribution Equipment
• Energy Transmission: Two-way Transmission
• Modulation System: PFM
• Certification: CE
• Brand: Dezhen
• Switching Power Supply: 28V 71A
• Wide Voltage: 2000W
• Transport Package: Regular Packaging
• Specification: 24*13*8cm
• Trademark: Wolves Team
• Origin: China
• HS Code: 8543709200
• Production Capacity: 2000PCS/Year

Product Description

   

 

Parameter Category	Specific Parameter Item	Specification/Value
Core Output Parameters	Rated Output Voltage	DC 28V
	Rated Output Current	71A
	Rated Output Power	2000W
Input Parameters	Input Voltage Range	AC 180V - 264V (Wide Voltage Adaptive)
	Input Frequency	50/60Hz
	Power Factor	≥ 0.95
Performance Parameters	Conversion Efficiency	≥ 90%
	Operating Frequency	60kHz
	Voltage Regulation Rate	≤ ±1%
Environment & Protection	Operating Temperature Range	-20°C ~ +60°C
	Storage Temperature Range	-40°C ~ +85°C
	Protection Level	IP20 (Indoor Use, Protection Against Solid Foreign Objects)
	Heat Dissipation Method	Intelligent Fan Cooling + Heat Sink Assistance (Low Noise)

Protection Functions	Over Voltage Protection (OVP)	33.6V ± 1V, Auto-Restart After Triggering
	Over Current Protection (OCP)	78A ± 2A, Constant Current Current-Limiting Protection
	Short Circuit Protection (SCP)	Auto Current Limiting, Resume Normal After Short Circuit Release
	Over Load Protection (OLP)	110% ~ 130% Rated Power, Shutdown Protection After Triggering

OUTPUT
Output Voltage Range:DC 0V~28V (adjustable)
Rated Output Voltage:DC 28V
Rated Output Current:71A
Rated Output Power:1988W (≈2000W)
Voltage Adjustment Range:0V~28V (via built-in potentiometer)
Ripple & Noise:≤ 200mVp-p (measured at 20MHz bandwidth, with 12" twisted pair + 0.1μF + 47μF capacitor)
Voltage Tolerance:±2% (at rated input, rated load, 25ºC ambient)
Line Regulation:±0.5% (input voltage varies within ±10%)
Load Regulation:±1.0% (load varies between 0~100%)
Setup Time:≤ 2000ms (cold start, full load)
Hold-Up Time:≥ 15ms (220VAC input, full load)

Core Differences vs. Linear Power Supplies

Comparison Item	Switching Power Supply	Linear Power Supply
Efficiency	80%~95%	30%~60%
Size/Weight	Compact & lightweight	Bulky & heavy
Heat Generation	Low (requires small cooling)	High (requires large heat sinks)
Input Compatibility	Wide voltage adaptive	Only fits fixed input voltage

Notes
All parameters are measured at 220VAC input, rated load, and 25ºC ambient temperature unless specified.
Output voltage can be adjusted via the potentiometer on the power supply; disconnect the load before adjustment.
Ensure adequate heat dissipation and avoid blocking ventilation openings.
This power supply is a component; the final equipment must re-verify EMC compliance.