Project Description

  • LW-3020KD Front View
  • LW-3020KD Back View
  • LW-3020KD Package

This serial single output switch power supply is a kind of DC regulated power supply with high efficiency and stability. It can be acted both as constant voltage as well as constant current dc power supply. For this serial power supply,it has perfect protection circuit, can be used in many areas.


1. Single phase, single output dc power supply

2. Constant voltage and constant current operation (C.C and C.V. automatic conversion)

3. Both current and voltage can be adjusted from 0 to rated value

4. 4 digits LED digital display

5. Built-in EMI filter (Anti-interference circuit)

6. Intelligent temperature control fan to help power supply cooling fast


Charge batteries, PCB board manufacturing industry/motors, LED products, and dc fans test/electrofishing, electrolyzation, electronic components aging/laboratory, Electronic equipment, automatic Test Equipment/All other occasions need to use DC Power Supply

Protection function:

1. Overvoltage protection
2. over load protection
3. over temperature protection
4. current limitation protection


Input Voltage: AC 220/110V±10%  50/60Hz ±2%

Output Voltage: 0-30V adjustable

Output Current: 0-30A adjustable

Working Conditions: -10℃ - 40℃

relative Humidity: < 90%

Storage Conditions: -20℃ - 80℃

relative Humidity: < 80%

Display Accuracy: ±1% ±1 digit

Voltage Stabilization: ≤ 0.5%

Current Stabilization: ≤ 0.8%

Load Stabilization: ≤ 0.5%

Ripples & Noises: ≤ 1% rms

Surge Current: 30A/115V, 60A/230V (cold-start)

Input Leakage Current: < 0.7mA / 230V

Withstanding Voltage Test:

From input to output voltage: 1.5KVAC/min

From input voltage to case: 1.5KVAC/min

From output voltage to case: 500VAC/min

Download LW-3030KD Switching DC Power Supply User Manual

Model Output voltage Output current Display accuracy Dimension


LW-1520KD 0-15V 0-20A ±1%±1 digit 470*320*220
LW-1530KD 0-15V 0-30A ±1%±1 digit 470*320*220
LW-3010KD 0-30V 0-10A ±1%±1 digit 470*320*220
LW-3020KD 0-30V 0-20A ±1%±1 digit 470*320*220
LW-3030KD 0-30V 0-30A ±1%±1 digit 470*320*220
LW-6010KD 0-60V 0-10A ±1%±1 digit 470*320*220

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