NANKADF DC Laboratory Power Supply User Manual

1. Introduction

The NANKADF DC Laboratory Power Supply series features four-window dual-color digital displays and switch-mode DC stabilized power supplies. These units offer USB fast charging output with simultaneous display of voltage and current. Designed for versatility, they are ideal for mobile phone and computer repair, battery charging, educational settings, and production line applications. Utilizing coding potentiometers, these power supplies allow for continuous adjustment of output voltage and current from 0 to the nominal value, with pre-display functionality for easy setup. Each device includes a USB fast charging interface supporting multiple fast charging protocols and is equipped with comprehensive short-circuit protection. Known for excellent stability, low ripple, compact size, lightweight design, and user-friendly operation, these power supplies are built for long-term, full-load performance.

Figure 1: NANKADF Adjustable DC Power Supply

2. Safety Instructions

• Always connect the power supply to a grounded outlet.
• Ensure the input voltage switch (110V/220V) on the rear panel is set correctly for your local power grid before connecting the power cord.
• Do not operate the device in wet or damp conditions.
• Avoid blocking ventilation openings to prevent overheating.
• Do not open the casing; there are no user-serviceable parts inside. Refer servicing to qualified personnel.
• Disconnect power before making or changing connections to the output terminals.
• Use appropriate test leads and ensure they are in good condition.

3. Product Overview

The NANKADF DC Power Supply series offers various models, each with unique features and control interfaces. Below are detailed introductions to the functions of common models.

3.1 WPS Function Introduction

Figure 2: WPS Model Front Panel Layout

1. Constant Pressure Indicator Light (C.V)
2. Constant Current Indicator Light (C.C)
3. Short Circuit Protection Indicator Light (OCP)
4. Output Indicator (OUT)
5. Output Button
6. USB Fast Charging Port
7. Power Switch
8. Voltage Display
9. Current Display
10. Power Display
11. Voltage Adjustment Knob
12. Current Adjustment Knob
13. Positive Polarity (red)
14. Ground Terminal (green)
15. Negative Polarity (black)

3.2 DPS Function Introduction

Figure 3: DPS Model Front Panel Layout

1. Voltage Display
2. Constant Pressure Indicator Light (C.V)
3. Current Display
4. Power Display
5. USB-C Fast Charging Port
6. USB-A Fast Charging Port
7. Power Switch (ON/OFF)
8. Ground Terminal (green)
9. Coarse Voltage Adjustment Knob (V-COARSE)
10. Constant Current Indicator Light (C.C)
11. Fine Voltage Adjustment Knob (V-FINE)
12. Coarse Current Adjustment Knob (A-COARSE)
13. Fine Current Adjustment Knob (A-FINE)
14. Constant Current/Short Circuit Protection Switch (C.C|OCP)
15. Positive Polarity (red)
16. Negative Polarity (black)

3.3 EPS Function Introduction

Figure 4: EPS Model Front Panel Layout

1. Voltage Display
2. Current Display
3. Power Display
4. Storage Indicator Light
5. Storage Button (M1-M3)
6. USB-C Fast Charging Port
7. Power Switch
8. USB-A Fast Charging Port
9. Positive Polarity (red)
10. Ground Terminal (green)
11. Voltage Adjustment Knob
12. Constant Pressure Indicator Light (C.V)
13. Current Adjustment Knob
14. Constant Current Indicator Light (C.C)
15. Output Button (OUT)
16. Short-Circuit Protection Button (OCP)
17. Negative Polarity (black)

3.4 TPS Function Introduction

Figure 5: TPS Model Front Panel Layout

1. Voltage Display
2. USB-C Fast Charging Port
3. Current Display
4. USB-A Fast Charging Port
5. Power Display
6. Constant Current Indicator Light (C.C)
7. Constant Pressure Indicator Light (C.V)
8. Short-Circuit Protection Function (OCP)
9. Output Indicator (OUT)
10. Voltage/Current Switch Button (V/A)
11. Output Button (OUT)
12. Short-Circuit Protection Button (OCP)
13. Encoder Adjustment Knob
14. Power Switch
15. Negative Polarity (black)
16. Ground Terminal (green)
17. Positive Polarity (red)

3.5 TPS-C Function Introduction

Figure 6: TPS-C Model Front Panel Layout

1. Voltage Display
2. Constant Pressure Indicator Light (C.V)
3. Current Display
4. Constant Current Indicator Light (C.C)
5. Power Display
6. USB Fast Charging Port
7. USB Voltage Display
8. USB Current Display
9. Positive Polarity (red)
10. Negative Polarity (black)
11. Power Switch
12. Storage Button (M1-M3)
13. Function Lock Button
14. Voltage Adjustment Knob
15. Short-circuit Protection Button (OCP)
16. Current Adjustment Knob
17. Output Button (OUT)

3.6 GA Function Introduction

Figure 7: GA Model Front Panel Layout

1. Voltage Display
2. Current Display
3. USB Voltage Display
4. USB Fast Charging Port
5. Current Adjustment Knob
6. Power Switch
7. Constant Pressure Indicator Light (C.V)
8. Constant Current Indicator Light (C.C)
9. USB Current Display
10. Voltage Adjustment Knob
11. Positive Polarity (red)
12. Negative Polarity (black)

3.7 Model Comparison

Figure 8: NANKADF Power Supply Model Comparison Table

4. Setup

4.1 Unpacking and Inspection

Carefully remove the power supply from its packaging. Inspect for any signs of damage during transit. Ensure all accessories are present:

• NANKADF DC Power Supply Unit
• AC Power Cord (appropriate plug type for your region)
• Output Test Leads
• User Manual (this document)

Figure 9: Package Contents

4.2 Power Connection

1. Locate the input voltage selector switch on the rear panel of the power supply. Ensure it is set to match your local mains voltage (110V or 220V). Incorrect setting can damage the unit.
2. Connect the provided AC power cord to the power input socket on the rear panel of the power supply.
3. Plug the other end of the AC power cord into a grounded electrical outlet.

4.3 Output Connection

1. Ensure the power supply is turned off and the output is disabled (if applicable to your model).
2. Connect the red output test lead to the positive (+) terminal (red) and the black output test lead to the negative (-) terminal (black) on the front panel.
3. If your model includes a ground terminal (green), connect a separate ground wire from your circuit to this terminal for safety, if required by your application.
4. Connect the other ends of the test leads to your load or circuit, ensuring correct polarity.

5. Operating Instructions

5.1 Power On/Off

Press the POWER switch on the front panel to turn the unit on or off. The display will illuminate upon power-on.

5.2 Adjusting Voltage and Current

Use the Voltage Adjustment Knob and Current Adjustment Knob to set the desired output voltage and current. Some models (e.g., DPS) feature separate coarse and fine adjustment knobs for precise control. Rotate the knob to adjust the numbers 0-9. Press the knob to change the adjustment position (e.g., from units to tens).

Figure 10: Precision Encoder Adjustment

5.3 Enabling/Disabling Output

Press the 'OUT' button on the front panel to enable or disable the power output to your connected load. The output indicator will show the status.

Figure 11: Output and OCP Buttons

5.4 Over Current Protection (OCP)

To enable or disable Over Current Protection (OCP), long-press the current adjustment knob (or dedicated OCP button on some models). When OCP is active, the OCP indicator light will illuminate, and the output will shut off if the current exceeds the set limit.

Video 1: Demonstration of Programmable Encoder Adjustment, OCP Mode, USB Fast Charging, and Powering a Fan (WPS Model)

5.5 USB Fast Charging

Many models are equipped with USB-A and/or USB-C fast charging ports. Simply connect your compatible device to the USB port. The display may show the USB voltage and current output (depending on the model).

Figure 12: USB Fast Charging (WPS Model)

Figure 13: USB-A + USB-C Dual Fast Charging (DPS Model)

5.6 Memory Functions (M1-M3, specific models)

For models with memory buttons (M1, M2, M3), you can save and recall frequently used voltage and current settings:

• To Save: Set the desired voltage and current. Long-press one of the M1-M3 buttons until the display indicates the setting is saved.
• To Recall: Briefly press the desired M1-M3 button to load the saved settings.

Figure 14: Memory Functions

6. Maintenance

• Cleaning: Disconnect the power supply from the mains before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or solvents.
• Ventilation: Ensure the ventilation holes on the sides and rear of the unit are clear of obstructions to allow for proper airflow and heat dissipation.
• Storage: Store the power supply in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
• Cable Inspection: Regularly inspect the power cord and test leads for any signs of damage. Replace damaged cables immediately.

7. Troubleshooting

8. Specifications

9. User Tips

• Electrolysis Applications: When using the power supply for electrolysis, ensure that the voltage and current settings are appropriate for the specific electrolytic solution and electrodes being used. Always consult the guidelines for your electrolysis process to prevent damage to the power supply or unsafe conditions.
• Pre-setting Values: Take advantage of the pre-display feature to set your desired voltage and current before enabling the output. This helps prevent accidental over-voltage or over-current to your sensitive circuits.
• Memory Storage: For repetitive tasks, utilize the M1-M3 memory buttons (on applicable models) to save and quickly recall frequently used voltage and current settings, streamlining your workflow.
• USB Charging: The integrated USB fast charging ports are convenient for charging mobile devices. Remember that the charging speed depends on the connected device's compatibility with fast charging protocols.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Keep your purchase receipt as proof of purchase.