1. Introduction
The KORAD KA3010P is a high-precision, single-channel, constant-voltage and constant-current DC linear power supply designed for laboratory, educational, and production environments. It features low ripple and noise, high reliability, and high accuracy. The voltage and current outputs are continuously adjustable, and the unit includes programmable storage settings for convenience.
Key features include:
- Compact design with dual 4-digit LED displays for voltage and current.
- Digital controls for precise adjustments.
- Four programmable memory settings (M1-M4) for quick recall of parameters.
- Output switch control for safety and convenience.
- Comprehensive circuit protection: over-load, short-circuit, and over-temperature.
- Automatic switching between mA and A display.
- Switchable power input (110V/220V).
2. Unit Features Overview
This section details the primary features of the KORAD KA3010P power supply.
Figure 2.1: Overview of KORAD KA3010P Unit Features.
2.1 Power & Protection
The unit is a 30V/10A benchtop power supply equipped with built-in over-current and over-voltage protection. It also features a dedicated on/off button for controlling the unit's output, allowing for safe connection and disconnection of loads without powering down the entire unit.
2.2 Memory Settings (M1-M4)
Four dedicated memory locations (M1, M2, M3, M4) are available to store frequently used current and voltage settings. This allows for quick recall and switching between desired test settings, enhancing operational efficiency.
2.3 Bright 4-Digit LED Display
The power supply features a bright, precise 4-digit LED display for both voltage and current. This display provides clear and accurate real-time readouts of the unit's output and active settings, ensuring legibility on any workbench.
2.4 Switchable Power Input
The unit's power input is easily switchable between 110V and 220V, accommodating different regional power standards. The rear panel also houses the fan air vent, which activates based on the internal temperature of the unit to ensure optimal cooling.
3. Panel Overview
Understanding the front panel controls and indicators is essential for operating the KORAD KA3010P. Refer to the diagram below for a detailed layout.
Figure 3.1: KORAD KA3010P Front Panel Layout and Controls.
- Voltage Display (V): Shows the current output voltage.
- Current Display (A): Shows the current output current.
- OVP (Over-Volt Protection Active): Indicator for active over-voltage protection.
- OCP (Over-Current Protection Active): Indicator for active over-current protection.
- C.C (Constant Current Mode): Indicator for constant current operation.
- C.V (Constant Voltage Mode): Indicator for constant voltage operation.
- OUT (Output On/Off Indicator): Shows if the output is active.
- LOCK (Front Panel Lock-Out Function): Indicator for locked front panel controls.
- M1-M4 (Setting Memory Indicator): Indicates which memory preset is active or being set.
- MEMORY (RECALL/SAVE) Buttons (M1-M4): Used to recall or save settings to memory locations.
- UNLOCK Button: Used to unlock the front panel controls.
- BEEP Button: Toggles the keypad beep sound on/off.
- OCP Button: Toggles over-current protection on/off.
- OVP Button: Toggles over-voltage protection on/off.
- Off/On Button: Toggles the output power on/off.
- ADJUST Knob: Rotary encoder for setting voltage and current values.
- Digit Selector Buttons (<, >): Used to select the digit to adjust with the ADJUST knob.
- Voltage/Current Button: Toggles between voltage and current adjustment mode for the ADJUST knob.
- POWER Button: Main power switch for the unit.
- Output Terminals (+V, +A, GND): Terminals for connecting the load. Red for positive voltage/current, Black for negative voltage/current, Green for ground.
4. Setup
4.1 Initial Inspection
Upon unpacking, inspect the unit for any signs of physical damage. Ensure all accessories are present. If any damage is found, contact your supplier immediately.
4.2 Power Connection
- Verify the input voltage selector switch on the rear panel is set to match your local power supply (110V or 220V).
- Connect the provided power cord to the AC inlet on the rear panel and plug it into a grounded power outlet.
4.3 Connecting a Load
Before connecting any load, ensure the power supply output is turned off (OUT indicator is off). Connect your device to the output terminals:
- Connect the positive (+) terminal of your load to the red (+) output terminal of the power supply.
- Connect the negative (-) terminal of your load to the black (-) output terminal of the power supply.
- For safety and noise reduction, connect the ground (GND) terminal to the chassis ground of your setup if required.
4.4 PC Software Control (Optional)
The KA3010P can be controlled via PC software using either a USB or RS232 interface located on the rear of the unit. Drivers and software are typically provided by the manufacturer or can be downloaded from their official website. Refer to the software's specific instructions for installation and usage.
Figure 4.1: KORAD KA3010P connected for PC software control via USB.
5. Operation
5.1 Basic Operation
- Press the POWER button to turn on the unit. The LED displays will illuminate.
- Press the Voltage/Current button to select whether you want to adjust voltage or current. The corresponding display will show the active setting.
- Use the < and > digit selector buttons to choose which digit of the voltage or current value you wish to adjust.
- Rotate the ADJUST knob to change the selected digit's value.
- Once desired voltage and current limits are set, press the Off/On button to enable the output. The OUT indicator will light up.
- To disable the output, press the Off/On button again.
5.2 Using Memory Presets (M1-M4)
5.2.1 Saving Settings
- Set the desired voltage and current values using the ADJUST knob and digit selectors.
- Press and hold one of the M1, M2, M3, or M4 buttons for approximately 2 seconds until a beep sounds, indicating the settings have been saved to that memory location.
5.2.2 Recalling Settings
To recall a saved setting, simply press the corresponding M1, M2, M3, or M4 button briefly. The stored voltage and current values will be loaded and displayed.
5.3 Protection Functions (OVP/OCP)
The KA3010P includes Over-Voltage Protection (OVP) and Over-Current Protection (OCP) to safeguard the unit and connected loads.
- To enable or disable OVP, press the OVP button. When active, the OVP indicator will light up.
- To enable or disable OCP, press the OCP button. When active, the OCP indicator will light up.
- When OVP or OCP is triggered, the output will automatically shut down to prevent damage. Clear the fault condition and reset the output using the Off/On button.
5.4 Front Panel Lock-Out
To prevent accidental changes to settings, the front panel controls can be locked. Press the LOCK button to activate the lock function. The LOCK indicator will illuminate. To unlock, press the UNLOCK button.
6. Maintenance
Proper maintenance ensures the longevity and reliable operation of your KORAD KA3010P power supply.
- Cleaning: Disconnect the power supply from the AC outlet before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure the ventilation openings on the sides and rear of the unit are clear of obstructions to allow for proper airflow and cooling.
- Storage: When not in use for extended periods, store the unit in a cool, dry place, away from direct sunlight and excessive dust.
- Fuse Replacement: If the unit does not power on, check the fuse located near the AC inlet on the rear panel. Replace only with a fuse of the same type and rating as specified by the manufacturer.
7. Troubleshooting
This section provides solutions to common issues you might encounter with your power supply.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | No AC power; Blown fuse; Power switch off. | Check power cord connection and wall outlet. Verify AC input voltage selector. Replace fuse if necessary. Ensure POWER button is pressed. |
| No output voltage/current. | Output is off; OVP/OCP triggered; Incorrect settings. | Press the Off/On button to enable output. Check OVP/OCP indicators and clear fault. Verify voltage/current settings are not zero. |
| Output voltage/current is unstable. | Poor load connection; Overload condition. | Ensure load connections are secure. Reduce load or check for short circuits in the load. |
| Front panel controls unresponsive. | Panel is locked. | Press the UNLOCK button. |
If the problem persists after attempting these solutions, please contact KORAD customer support.
8. Specifications
Detailed technical specifications for the KORAD KA3010P power supply.
Figure 8.1: KORAD KA3010P Technical Specifications.
| General Specifications | |
|---|---|
| Model | KA3010P |
| Voltage Range | 0-30V |
| Current Range | 0-10A |
| Product Dimensions (LxWxH) | 30.48 x 25.4 x 20.32 cm |
| Item Weight | 5.9 kg |
| Input Voltage | Switchable 110V/220V |
| Performance Specifications (at 25°C ± 5°C) | |
|---|---|
| Load Regulation (Voltage) | ≤0.01% + 3mV |
| Load Regulation (Current) | ≤0.1% + 20mA |
| Line Regulation (Voltage) | ≤0.01% + 3mV |
| Line Regulation (Current) | ≤0.1% + 3mA |
| Setup Resolution (Voltage) | 10mV |
| Setup Resolution (Current) | 1mA |
| Setup Accuracy (Voltage) | ≤0.5% + 20mV |
| Setup Accuracy (Current) | ≤0.5% + 20mA |
| Ripple (20-20M) (Voltage) | ≤2mVrms |
| Ripple (20-20M) (Current) | ≤5mARms |
| Temperature Coefficient (Voltage) | ≤150ppm |
| Temperature Coefficient (Current) | ≤150ppm |
| Read Back Resolution (Voltage) | 10mV |
| Read Back Resolution (Current) | 1mA |
| Read Back Temp. Coefficient (Voltage) | ≤150ppm |
| Read Back Temp. Coefficient (Current) | ≤150ppm |
Figure 8.2: KORAD KA3010P Physical Dimensions and Weight.
9. Warranty and Support
KORAD products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please contact your local distributor or the manufacturer directly. Keep your purchase receipt as proof of purchase for warranty claims.
Manufacturer: Korad Technology
