1. Introduction
Thank you for choosing the KUAIQU SPS-C3010 Series DC Power Supply. This professional power supply regulator is designed for high accuracy and reliability, featuring advanced protection functions and convenient adjustment controls. It is suitable for a wide range of applications including laboratory work, school projects, electronic maintenance, electrolysis, electroplating, lamp testing, aging tests, and DIY projects.
Key features include Over Current Protection (OCP), Over Voltage Protection (OVP), an output switch, encoder adjustment for precise control, and integrated USB-A and USB-C fast charging ports.
2. Package Contents
Please verify that all items listed below are included in your package:
- 1x DC Power Supply Unit
- 1x Black Output Line
- 1x Red Output Line
- 1x Instruction Book (English)
- 1x Hard Packing Box
- 2x Protective Sponge
- 1x Certificate of Conformity (1 Year Warranty)
3. Safety Information
To ensure safe operation and prevent damage to the device or connected equipment, please observe the following safety guidelines:
- Input Voltage: Ensure the correct input voltage (AC110V or AC220V) is selected for your region. Incorrect input voltage can cause malfunction and damage. Refer to the 'Input Voltage Selection' section for details.
- Grounding: Always connect the power supply to a properly grounded outlet.
- Ventilation: Ensure adequate ventilation around the unit. Do not block the cooling fan or side cooling holes.
- Environment: Operate the device in a dry, well-ventilated area, away from direct sunlight, heat sources, and flammable materials.
- Protections: The power supply is equipped with Over Voltage Protection (OVP), Over Current Protection (OCP), Thermal Protection, Power Overload Protection, Short-Circuit Protection, and Leakage Protection. These features are designed to protect the device and your connected load.
- Maintenance: Do not attempt to open or repair the unit yourself. Refer all servicing to qualified personnel.
4. Product Overview
4.1 Front Panel Introduction
- Voltage Display: Shows the output voltage in Volts (V).
- Current Display: Shows the output current in Amperes (A).
- Power Display: Shows the output power in Watts (W).
- C.V. Indicator: Illuminates when the power supply is operating in Constant Voltage mode.
- C.C. Indicator: Illuminates when the power supply is operating in Constant Current mode.
- V-COARSE Knob: Coarse adjustment for voltage.
- V-FINE/ Knob: Fine adjustment for voltage. Press and hold for 5 seconds to turn off/on the beeping sound.
- A-COARSE Knob: Coarse adjustment for current.
- A-FINE Knob: Fine adjustment for current.
- OCP Button: Over Current Protection activation/setting.
- OVP Button: Over Voltage Protection activation/setting.
- OUTPUT Button: DC output switch. Press to start/stop output.
- POWER Button: Main power switch for the unit.
- USB-A Port: 18W fast charging port.
- USB-C Port: Fast charging interface.
- Negative Output Port (-): Black terminal for negative connection.
- GND Terminal: Green terminal for ground connection.
- Positive Output Port (+): Red terminal for positive connection.
4.2 Rear Panel Introduction
- Intelligent Cooling Fan: Automatically turns on for heat dissipation when the internal temperature reaches or exceeds 50°C.
- Power Input: AC power input socket.
- Fuse Box: Contains the main fuse and an internal spare fuse for AC overload protection.
4.3 Core Functions
The KUAIQU DC Power Supply offers 12 core functions for enhanced performance and safety:
- High-precision 4-digit display
- Power display
- Encoder adjustment
- Dual fast charging ports (USB-A, USB-C)
- Output switch
- Short circuit alarm
- OCP current limit disconnect
- OVP voltage limit disconnect
- Low Ripple
- Low noise
- Temperature control protection
- Overload protection
5. Setup
5.1 Input Voltage Selection
It is critical to select the correct input voltage for your region to prevent damage to the power supply. The device supports both AC110V and AC220V input. Please ensure the voltage switch on the rear panel (if present, or check product label) is set correctly before connecting to mains power.
- AC110V Countries: United States, Canada, Mexico, Japan, Colombia, etc.
- AC220V Countries: All EU countries, South Korea, Russia, Ukraine, Australia, United Kingdom, and many others.
5.2 Initial Connection
- Connect the appropriate power cord to the power input socket on the rear panel and then to a grounded AC outlet.
- Ensure the power supply is turned off using the front panel POWER button.
- Connect the red output line to the positive (+) terminal and the black output line to the negative (-) terminal.
- Connect the other ends of the output lines to your load. Ensure proper polarity.
6. Operating Instructions
6.1 Power On/Off
Press the POWER button on the front panel to turn the unit on or off.
6.2 Voltage and Current Adjustment
The power supply features upgraded encoder adjustment knobs for precise control of voltage and current. Always set your desired voltage and current before enabling the output to prevent damage to your connected device.
- Voltage Adjustment:
a. Press the V-COARSE knob to switch between the first two digits of the voltage display. Rotate the knob to adjust the value between 0-9.
b. Press the V-FINE/ knob to switch between the last two digits of the voltage display. Rotate the knob to adjust the value between 0-9. - Current Adjustment:
a. Press the A-COARSE knob to switch between the first two digits of the current display. Rotate the knob to adjust the value between 0-9.
b. Press the A-FINE knob to switch between the last two digits of the current display. Rotate the knob to adjust the value between 0-9.
Note: You can long press the V-FINE/ knob for 5 seconds to turn on/off the beeping sound during adjustment.
6.3 Output Control
After setting the desired voltage and current and ensuring all wiring is correct, press the OUTPUT button to enable the DC output. The button will illuminate when output is active. Press it again to disable the output.
6.4 Over Current Protection (OCP) Setting
OCP protects your load by cutting off power if the current exceeds a preset limit. When OCP is triggered, the unit will beep and display 'OCP' on the screen.
- Long press the OCP button for 5 seconds to enter the OCP setting mode.
- Adjust the desired current limit using the current adjustment knobs (A-COARSE and A-FINE).
- Briefly press the OCP button to save the setting and exit.
6.5 Over Voltage Protection (OVP) Setting
OVP protects your load by cutting off power if the voltage exceeds a preset limit. When OVP is triggered, the unit will beep and display 'OVP' on the screen.
- Long press the OVP button for 5 seconds to enter the OVP setting mode.
- Adjust the desired voltage limit using the voltage adjustment knobs (V-COARSE and V-FINE/).
- Briefly press the OVP button to save the setting and exit.
6.6 USB Charging Ports
The power supply includes a USB-A (18W) and a USB-C fast charging port on the front panel. These can be used to quickly charge compatible mobile phones, tablets, or other devices.
7. Maintenance
7.1 Cooling Fan
The intelligent cooling fan automatically activates when the internal temperature exceeds 50°C to ensure stable operation and prolong the product's lifespan. Regularly check that the rear and side cooling holes are not obstructed to allow for proper airflow.
7.2 Fuse Replacement
The fuse box is located on the rear panel and contains the main fuse. An internal spare fuse is also provided for AC overload protection. If the unit fails to power on, check and replace the fuse if necessary. Use only fuses of the specified rating (5A).
7.3 Cleaning
Wipe the exterior of the power supply with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the unit is powered off and disconnected from the mains before cleaning.
8. Troubleshooting
- OCP/OVP Alarm Triggered: If the OCP or OVP alarm sounds and the output is disconnected, it indicates that the output current or voltage has exceeded the set limit. Press the respective OCP or OVP button briefly to cancel the alarm. Check your load and settings before re-enabling output.
- No Output: Ensure the OUTPUT switch is pressed (illuminated) to enable output. Verify that the power supply is turned on and connected to a working power outlet. Check all wiring connections to the load.
- Incorrect Voltage/Current Display: If the display shows unexpected values, re-adjust the voltage and current using the coarse and fine adjustment knobs. Ensure the knobs are not stuck or damaged.
- Overheating: If the unit feels excessively hot, check that the intelligent cooling fan is operating and that all ventilation holes (rear and sides) are clear of obstructions. Reduce the load if necessary.
9. Specifications
| Feature | Description |
|---|---|
| Input Voltage | 110V±10% 60Hz or 220V±10% 50Hz |
| Working Temperature | 0°C - 40°C; Relative Humidity: <80%RH |
| Storage Temperature | -10°C - 70°C; Relative Humidity: <70%RH |
| Display Accuracy | 0.5% + 2 digits |
| Display Resolution | Voltage: 0.1V / Current: 0.001A |
| Product Dimension | 3.3 x 8.4 x 5.5 Inches (approx. 22 x 8.5 x 15.5 cm) |
| Product Weight | 2.6 lb (approx. 1.2 KG) |
| Fuse Standard | 5A |
| Output Type | SINGLE |
| Output Frequency | 50/60Hz |
| Certification | CE, FCC |
| Parameter | Constant Voltage State | Constant Current State |
|---|---|---|
| Stability | Voltage stability ≤0.1%+3mV Low Voltage: 0.2~0.3%+3mV | Current stability ≤0.2%+3mA |
| Load Stability | ≤0.5%+3mV | ≤0.2%+3mV |
| Ripple Noise | ≤30mVrms | ≤20mArms |
| Load Regulation (Voltage) | ≤ 0.3% + 10 mV | N/A |
| Load Regulation (Current) | N/A | ≤ 0.1% + 2.5 mA |
| Line Regulation (Voltage) | ≤ 0.01% + 2.5 mV | N/A |
| Line Regulation (Current) | N/A | ≤ 0.1% + 2.5 mA |
| Setting Resolution (Current) | N/A | 1 mA |
| Readback Resolution (Voltage) | 10 mV (<100V), 0.1V (≥100V) | N/A |
| Readback Resolution (Current) | N/A | 1 mA |
| Readback Accuracy (Voltage) | ≤0.05% + 10 mV (≤0.01% + 15 mV) | N/A |
| Readback Accuracy (Current) | N/A | ≤0.01% + 10 mA |
| Ripple (20Hz~20MHz) (Voltage) | ≤ 100 mVp-p, ≤ 15 mVrms | N/A |
| Ripple (20Hz~20MHz) (Current) | N/A | ≤ 15 mArms |
| Rise Time (No Load) | ≤200ms | ≤200ms |
| Rise Time (Full Load) | ≤300ms | ≤300ms |
| Fall Time (No Load) | ≤20S (≤30S for some models) | ≤20S (≤30S for some models) |
| Fall Time (Full Load) | ≤300ms | ≤300ms |
| Dynamic Response Time | ≤200ms | ≤200ms |
| Efficiency | ≥85% | ≥85% |
10. User Tips
- Silent Operation: If the beeping sound during knob adjustment is bothersome, you can long press the V-FINE/ knob for 5 seconds to toggle it on or off.
- Pre-setting Output: Always set your desired voltage and current values before pressing the OUTPUT button to activate the power supply. This practice helps prevent accidental over-voltage or over-current conditions to your connected load.
- Monitoring Display: Pay attention to the C.V. and C.C. indicators to understand the current operating mode of the power supply.
11. Warranty and Support
Your KUAIQU DC Power Supply comes with a 12-month warranty policy from the date of delivery. This warranty covers manufacturing defects and ensures free replacement for orders within 30 days. For orders between 1 to 12 months, a partial payment for replacement parts may be required.
For any questions, technical assistance, or warranty claims, please contact our customer support. We are committed to responding to your inquiries within 24 hours.
