KORAD KA3305D Programmable DC Power Supply User Manual
Manufacturer: Hotair
Address: ul. Polska 36, 42-400 Zawiercie
Website: www.hotair.pl
Phone: 692 555 555
Safety Information
Warning Symbols
This manual contains important safety instructions for operating and storing KORAD KA3300 series laboratory power supplies. Please read the following notes to ensure your safety and maintain optimal storage conditions.
The following warning symbols may appear in this user manual and in the power supply's specific manual:
- ⚠ WARNING
- ⚡ HIGH VOLTAGE DANGER
- ⚡ HIGH VOLTAGE DANGER
Safety Tips
- Do not block or cover the cooling fan intake vents.
- Avoid harmful factors and improper operation that could lead to device damage.
- Do not attempt to repair the device unless you are a trained technician.
Output Voltage
- Output Voltage: 110V / 120V / 220V / 230V 50 / 60 Hz
- To avoid electric shock, connect the device's power cord to a properly grounded outlet.
Environmental Conditions
Working Environment
- For use in enclosed spaces, away from direct sunlight, dust, and other air contaminants.
- Relative Humidity: <80%
- Temperature: 0-40 °C
Storage Environment
- In enclosed spaces
- Relative Humidity: <70%
- Temperature: -10 to 70 ° C
Fuse Characteristics
The following table lists the fuse specifications for different models and operating voltages.
| Model | 110V/120V | 220V/230V |
|---|---|---|
| KA3303 | T8A/250V (20x5mm) | T4A/250V (20x5mm) |
| KA3305 | T10A/250V (20x5mm) | T5A/250V (20x5mm) |
- To avoid danger, replace the fuse with the specified type and rated value.
- Disconnect the power cord before replacing the fuse.
- Before replacing the fuse, ensure the cause of its blowing has been repaired.
General Information
The KORAD KA3305D is a triple output stabilized power supply featuring programmable memory and smooth voltage regulation from 0 to 30V, along with smooth current regulation from 0 to 5A, and an independent 5V 3A output.
Power Supply Construction
The power supply is constructed based on a transformer.
Key Features
- Smooth current regulation (not just limitation) in the range of 0-5A.
- Includes 2 x 5A connection cables.
- Smooth voltage regulation in the range of 0-30V.
- Can operate as a current source and a voltage source.
- Features 5 memory slots for saving current, voltage, and operating modes per channel.
- Offers precise voltage/current adjustment (10 mV / 1 mA).
- Includes key lock function.
- Supports operation in Constant Voltage (C.V.) and Constant Current (C.C.) modes.
- Equipped with Overvoltage Protection (OVP) and Overcurrent Protection (OCP).
- Supports Series Connection for higher voltage (e.g., [60V, 5A]) and Parallel Connection for higher current (e.g., [30V, 10A]).
Specifications
Note: The following specifications have been tested at 25°C, +/- 5°C, and after a 20-minute warm-up.
| Specification | KD3003D | KD3005D | KD6003D |
|---|---|---|---|
| Voltage Range | 0-30V | 0-30V | 0-60V |
| Current Range | 0-3A | 0-5A | 0-3A |
| Load Regulation (Voltage) | ≤0.01%+2mV | ≤0.01%+2mV | ≤0.01%+2mV |
| Load Regulation (Current) | <0.1%+5mA | <0.1%+10mA | <0.1%+5mA |
| Voltage Stability Coeff. (Voltage) | ≤0.01%+3mV | ≤0.01%+3mV | ≤0.01%+3mV |
| Voltage Stability Coeff. (Current) | <0.1%+3mA | <0.1%+3mA | <0.1%+3mA |
| Accuracy (25°C±5°C) (Voltage) | <0.5%+20mV | <0.5%+20mV | <0.5%+30mV |
| Accuracy (25°C±5°C) (Current) | ≤0.5%+5mA | ≤0.5%+10mA | ≤0.5%+5mA |
| Ripple (20-20MHz) (Voltage) | <1mVrms | <2mVrms | <1mVrms |
| Ripple (20-20MHz) (Current) | <3mArms | <3mArms | <3mArms |
| Temp. Coefficient (Voltage) | ≤150ppm | ≤150ppm | ≤150ppm |
| Temp. Coefficient (Current) | ≤150ppm | ≤150ppm | ≤150ppm |
| Read Back Resolution (Voltage) | 10mV | 10mV | 10mV |
| Read Back Resolution (Current) | 1mA | 1mA | 1mA |
| Read Back Temp. Coeff. (Voltage) | ≤150ppm | ≤150ppm | ≤150ppm |
| Read Back Temp. Coeff. (Current) | ≤150ppm | ≤150ppm | ≤150ppm |
| Response Time (Voltage Rise) | |||
| Response Time (Voltage Fall) |
Front and Rear Panel Overview
Front Panel Overview
The front panel features LED displays for voltage and current, mode indicators, and control knobs/buttons for operation.
LED Displays
- Voltage Display: Shows the set output voltage value.
- Current Display: Shows the set output current value and overvoltage protection settings.
Mode Indicators
- OCP: Overcurrent protection indicator. The OCP LED lights up when this function is active.
- C.C: Constant Current mode indicator. The C.C LED lights up when Constant Current mode is selected.
- C.V: Constant Voltage mode indicator. The C.V LED lights up when Constant Voltage mode is selected.
- LOCK: Key lock indicator. Indicates when the front panel settings are locked.
Controls
- Power Button: Turns the power supply on/off.
- Channel Buttons (CH1, CH2): Activate/deactivate respective channels.
- OVP SET Button: Sets the overvoltage protection level.
- OCP SET Button: Sets the overcurrent protection level.
- LOCK/UNLOCK Button: Locks or unlocks the front panel controls.
- FINE/COARSE Knobs: Used for precise or coarse adjustment of voltage and current.
- PUSH (V) / PUSH (A) Buttons: Used in conjunction with knobs for setting voltage/current or switching between modes.
- Memory Buttons (M1-M5): For saving and recalling settings.
Rear Panel Overview
The rear panel provides interface ports, ventilation, and the main power input.
Interface Ports
- USB Interface
- RS232 Interface
Output Connectors
- CH1 Output Sockets (0-30V, GND)
- CH2 Output Sockets (0-30V, GND)
- CH3 Output Socket (5V 3A, GND)
Other
- Ventilation Openings
- Power Socket
Operation Modes & Adjustment
Operation Modes
The power supply can operate in the following modes:
- Constant Voltage (C.V.): Maintains a stable output voltage.
- Constant Current (C.C.): Maintains a stable output current.
- Overvoltage Protection (OVP): Protects the load from excessive voltage.
- Overcurrent Protection (OCP): Protects the power supply and load from excessive current.
- Series Connection: Allows combining two channels for higher voltage (e.g., [60V, 5A]).
- Parallel Connection: Allows combining two channels for higher current (e.g., [30V, 10A]).
Voltage and Current Adjustment
The power supply operates in two modes for voltage and current adjustment:
- Mode 1: To set values, press the adjustment knobs to adjust the current voltage/current levels. The display will flash, indicating that the output voltage can be changed by turning the knob. Pushing the knob can change the adjustment resolution (fine/coarse).
- Mode 2: Direct setting without needing to press the knob first. Both modes can be switched by pressing and holding the voltage adjustment knob and the current adjustment knob simultaneously for 2 seconds.
Accessories, Dimensions, and Environmental Protection
Accessories
- User Manual – 1 pc.
- Power Cord – 1 pc.
Dimensions and Weight
- Dimensions (W x H x D): 110 x 156 x 260 mm (inferred)
- Weight: KD3003x – 4kg, KD3005x – 4.8 kg
Disclaimer
The manufacturer reserves the right to make technical changes and product updates without prior notice.
Environmental Protection
The device complies with WEEE Directive 2002/96/EC.
The symbol [recycle symbol] indicates that the product must be disposed of separately and delivered to an appropriate collection point. Do not discard it with household waste. For more information, please contact the enterprise representative or local authorities responsible for waste management.
