Programmable DC Power Supply

Korad KA3000/6000 Series

Models: KA3003D/P, KA3005D/P, KA3010D/P, KA6002/3D/P, KA6005D/P

User Manual

Safety Information

General Precautions

Strictly follow the operating and storage instructions for the KA3000/6000 series equipment. For your safety, we strongly recommend reading this manual carefully.

These symbols may be encountered when working with the equipment:

⚠️ Precautionary Symbol
⚡ Warning: High Voltage!
? Ground Terminal ('Earth')

Safety Guidelines

Do not obstruct or insulate the ventilation inlets and outlets.
Avoid impacts and improper use to prevent damage to the device.
Do not open the equipment; servicing should only be performed by qualified personnel.
AC Input Voltage: 110 V / 120 V / 220 V / 230 V, 50/60 Hz.

Fuse Ratings

Power Supply Model	110 V / 120 V	220 V / 230 V
KA3003D/P	T4A/250B	T2A/250B
KA3005D/P	T6A/250B	T3A/250B
KA3010D/P	T10A/250B	T5A/250B
KA6002D/P	T5A/250B	T3A/250B
KA6003D/P	T5A/250B	T3A/250B
KA6005D/P	T10A/250B	T5A/250B

Fuse Replacement Guidelines

Before turning on the power supply, ensure the correct fuse is installed.
To prevent fire hazards, select a fuse according to the power supply's rated voltage.
When replacing a fuse, the power supply must be disconnected from the mains.
Before replacing a fuse, eliminate the cause of its blowing.

Model Range and Main Characteristics

Model Range

Model	Voltage Indication	Current Indication	USB	Resolution U/I
KA3003D	4 digits	4 digits	-	10 mV/1 mA
KA3005D	4 digits	4 digits	-	10 mV/1 mA
KA6002/3D	4 digits	4 digits	-	10 mV/1 mA
KA3010D	4 digits	4 digits	-	10 mV/1 mA
KA6005D	4 digits	4 digits	-	10 mV/1 mA
KA3003P	4 digits	4 digits	+	10 mV/1 mA
KA3005P	4 digits	4 digits	+	10 mV/1 mA
KA6002/3P	4 digits	4 digits	+	10 mV/1 mA
KA3010P	4 digits	4 digits	+	10 mV/1 mA
KA6005P	4 digits	4 digits	+	10 mV/1 mA

Main Characteristics

Features

Low noise: fan speed and output power control.
Compact size, lightweight.

Control

Constant voltage and current control.
Digital control panel.
5 memory banks for saving/recalling settings.
Coarse and fine adjustment for voltage/current.
Software calibration.
Audible alarm (buzzer).
Front panel lock function.

Protection

Overcurrent and overvoltage protection.
Reverse polarity protection.

Interfaces

USB/RS232 port for remote control (applicable to KA3003P, KA305P, KA6002P, KA6003P).

Front Panel Description

Indicators

Voltage and Current Display: Shows output voltage and current settings.
Operation Mode Indicators:
- OVP (Over Voltage Protection): Illuminates when output voltage exceeds safe limits. If OVP triggers, output voltage is cut off and OVP indicator flashes. Operation restores upon pressing OVP button.
- OCP (Over Current Protection): Illuminates when output current exceeds the set limit.
- CC (Constant Current): Illuminates when the power supply operates in constant current mode.
- CV (Constant Voltage): Illuminates when the power supply operates in constant voltage mode.
- OUT: Illuminates when voltage is present at the output terminals.
Memory Bank Indicators (M1-M5): Indicate which memory bank is currently active or storing settings.

Controls

Power Button: Main power on/off switch.
Memory Buttons (M1-M4): Used for saving and recalling settings from memory banks.
Unlock/Lock Button: Press and hold for 2 seconds to lock/unlock the front panel controls.
Beep Button (OCP): Press and hold for 2 seconds to enable/disable the buzzer.
OVP Button: Enables/disables overvoltage protection.
Off/ON Button: Enables/disables the output voltage.
Adjust Knob: Used for fine or coarse adjustment of voltage and current.
Voltage/Current Select Button: Switches between voltage and current adjustment modes. Pressing '>' increases adjustment precision; '<' decreases it.

Rear Panel Description

Power Input: AC mains connection socket.
Ventilation Outlets: Air vents for cooling.
Ground Terminal: Connection for protective earth.
USB Port: For remote control (models with 'P' suffix).
RS-232 Port: For remote control (models with 'P' suffix).
Fuse Holder: Contains the mains fuse.

Operation

Powering the Unit On

Press the POWER button. The display will show initialization and then recall the last saved settings.

Connecting to Mains

Connect the AC power cord to the input socket. Ensure the input voltage matches the rating on the rear panel (110/220V, 50/60 Hz).

Output Voltage Control

Press the Off/ON button to enable/disable the output voltage. The corresponding indicator will light up.

Automatic output voltage cutoff occurs under the following conditions:

When current protection (OCP) is triggered (current exceeds set limit).
When voltage exceeds the set overvoltage protection limit.
When new parameters are recalled from memory.

Buzzer Control

By default, the buzzer is enabled. To disable, press and hold the OCP (BEEP) button for 2 seconds. Repeat to re-enable.

Buzzer events can be configured in settings, such as power-on, buzzer/lock status, current/voltage adjustment, and output status.

Panel Lock/Unlock

To lock the front panel, press and hold the Lock/Unlock button for 2 seconds. To unlock, repeat the process. Buttons will become active again.

Output Parameter Adjustment

Connect the device to the front panel terminals.
Set output voltage and current. Press the Voltage/Current button to switch between modes. Use the Adjust knob for coarse adjustment. Use the '>' and '<' buttons for fine adjustment.
Enable output voltage using the OUT button. The CV or CC indicator will light up depending on the load.

Saving and Recalling Settings

Saving Settings

Front panel settings can be saved to five memory banks.

Saved settings include: output current/voltage, buzzer status, panel lock status.

Direct recall is available via buttons M1-M4.

Recalling Settings

Press any memory bank button (e.g., M1) to recall settings. After recalling bank 4, turning the adjustment knob saves settings to bank 5.

When a memory bank is selected, its indicator lights up.

Note: After recalling settings, the output voltage is automatically turned off to prevent errors and protect the load.

Remote Control

Remote Control Setup

Models with the 'P' suffix are equipped with USB and RS-232 ports for remote control.

COM Port Settings:

Baud Rate: 9600
Parity: None
Data Bits: 8
Stop Bits: 1
Flow Control: None

Diagnostic queries can be sent via a terminal. Sending '*IDN' should return model and firmware information (e.g., 'Ka3003, SN: xxxxxxxx, VX. xx').

Connecting for Remote Control

Turn on the power supply and connect it to the computer via USB.
Launch the remote control software; the power supply will connect automatically. A buzzer signal indicates successful connection.
Front panel buttons will be locked; control is exclusively via remote.

Exiting Remote Control

Close the remote control software.
Disconnect the USB cable from the power supply.
A buzzer sound indicates that remote control mode is inactive.
The power supply will automatically revert to front panel control.

Frequently Asked Questions

Q1: Front panel buttons are inactive after powering on.

A1: The panel is locked. Press and hold the Lock/Unlock button for 2 seconds to unlock.

Q2: No output voltage after pressing the Off/ON button.

A2: The current level is set to '0'.

Q3: Voltage increases too slowly during adjustment.

A3: The current level is set too low.

Q4: Output voltage automatically shuts off after enabling OCP and pressing OUT.

A4: Protection may have been triggered. Try enabling the output voltage first, then the OCP.

Detailed Specifications

Note: The table shows power supply parameters after a 20-minute preheating period and at an ambient temperature of 25°C ±5 °C.

Models	KA3003D/P	KA3005D/P	KA3010D/P	KA6002/3D/P	KA6005D/P
Voltage Range	0-30 B	0-30 B	0-30 B	0-60 B	0-60 B
Current Range	0-3 A	0-5 A	0-10 A	0-2 A/3 A	0-3 A
Load Regulation
Voltage	<0.01%+2 mV	<0.01%+2 mV	<0.01%+3 mV	<0.01%+2 mV	<0.01%+2 mV
Current	<0.02%+5 mA	<0.02%+10 mA	<0.1%+20 mA	<0.02%+5 mA	<0.02%+10 mA
Line Regulation
Voltage	<0.01%+3 mV	<0.01%+3 mV	<0.01%+3 mV	<0.01%+3 mV	<0.01%+3 mV
Current	<0.02%+3 mA	<0.02%+3 mA	<0.01%+3 mA	<0.02%+3 mA	<0.02%+3 mA
Output Resolution
Voltage	10 mV	10 mV	10 mV	10 mV	10 mV
Current	1 mA	1 mA	1 mA	1 mA	1 mA
Setting Accuracy
Voltage	<0.5%+20 mV	<0.5%+20 mV	<0.5%+20 mV	<0.5%+30 mV	<0.5%+30 mV
Current	<0.1%+5 mA	<0.1%+10 mA	<0.5%+20 mA	<0.1%+5 mA	<0.1%+10 mA
Ripple (20-20 M)
Voltage	<1 mVrms	<2 mVrms	<2 mVrms	<1 mVrms	<1 mVrms
Current	<3 mVrms	<3 mVrms	<5 mVrms	<3 mVrms	<3 mVrms
Readback Resolution
Voltage	10 mV	10 mV	10 mV	10 mV	10 mV
Current	1 mA	1 mA	1 mA	1 mA	1 mA
Output Temp. Coefficient
Voltage	< 150 ppm	< 150 ppm	< 150 ppm	< 150 ppm	< 150 ppm
Current	< 150 ppm	< 150 ppm	< 150 ppm	< 150 ppm	< 150 ppm
Response Time
Voltage Rise	< 100 ms	< 100 ms	< 100 ms	< 100 ms	< 100 ms
Voltage Fall	< 100 ms (10% load)	< 100 ms (10% load)	< 100 ms (10% load)	< 100 ms (10% load)	< 100 ms (10% load)
Interfaces
Remote Control Ports	RS-232, USB	RS-232, USB	RS-232, USB	RS-232, USB	RS-232, USB
Additional Information
Operation Manual	1 pc.	1 pc.	1 pc.	1 pc.	1 pc.
Power Cord	1 pc.	1 pc.	1 pc.	1 pc.	1 pc.
USB Cable	1 pc. (for models with 'P' suffix)	1 pc. (for models with 'P' suffix)	1 pc. (for models with 'P' suffix)	1 pc. (for models with 'P' suffix)	1 pc. (for models with 'P' suffix)
Dimensions (W x H x D)	110 x 156 x 260 mm	110 x 156 x 260 mm	110 x 156 x 260 mm	110 x 156 x 260 mm	110 x 156 x 260 mm
Weight	KA3003 approx. 3.5 kg	KA3005 approx. 4.3 kg	KA3010 approx. 4.3 kg	KA6002/3 approx. 4.3 kg	KA6005 approx. 4.3 kg

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