KORAD KD3000-6000 Series Digital-Control DC Power Supply User Manual

Main Features

Low noise: cooling fan controlled by heatsink temperature.
Constant voltage / constant current operation modes.
Digital panel control.
4-digit display for voltage and current.
Software calibration capability.
Over Current Protection (OCP) function.
Button lock function for preventing accidental changes.

Specifications

Note: The specifications below are tested under the conditions of temperature 25℃ ± 5℃ and a warm-up period of 20 minutes.

Model	KD300 3D	KD300 5D	KD600 3D
Voltage	0-30V	0-30V	0-60V
Current	0-3A	0-5A	0-3A
Load Regulation
Voltage	≤0.01%+2mV	≤0.01%+2mV	≤0.01%+2mV
Current	≤0.1%+5mA	≤0.1%+10mA	≤0.1%+5mA
Line Regulation
Voltage	≤0.01%+3mV	≤0.01%+3mV	≤0.01%+3mV
Current	≤0.1%+3mA	≤0.1%+3mA	≤0.1%+3mA
Setup Resolution
Voltage	10mV	10mV	10mV
Current	1mA	1mA	1mA
Setup Accuracy (25℃ ± 5℃)
Voltage	≤0.5%+20mV	≤0.5%+20mV	≤0.5%+30mV
Current	≤0.5%+5mA	≤0.5%+10mA	≤0.5%+5mA
Ripple (20-20MHz)
Voltage	<1mVrms	<2mVrms	<1mVrms
Current	≤3mArms	≤3mArms	≤3mArms
Temp. Coefficient
Voltage	≤150 ppm	≤150ppm	≤150 ppm
Current	≤150 ppm	≤150 ppm	≤150 ppm
Read Back Resolution
Voltage	10mV	10mV	10mV
Current	1mA	1mA	1mA
Read Back Temp. Coefficient
Voltage	≤150 ppm	≤150 ppm	≤150 ppm
Current	≤150 ppm	≤150 ppm	≤150ppm

Accessories

User manual *1
Power cord *1

Weight and Dimension

KD3003, KD3005, KD6003: 110mm(W) * 156mm(H) * 260mm(D)

KD3003: 4Kg, KD3005: 4.8Kg

Safety Instructions

Safety Guidelines

⚠️ Do not block or obstruct the cooling fan vent opening.
⚠️ Avoid severe impacts or rough handling that leads to damage.
⚠️ Do not discharge static electricity.
⚠️ Do not disassemble unless you are qualified as service personnel.

AC INPUT

AC Input Voltage: 110V / 120V / 220V / 230V, 50 / 60 Hz
Connect the protective grounding conductor of the AC power cord to an earth ground, to avoid electrical shock.

Operation Environment

Location: Indoor, no direct sunlight, dust-free, almost non-conductive pollution.
Relative Humidity: < 80%
Altitude: < 2000m
Temperature: 32 – 104°F (0 – 40°C)

Storage Environment

Location: Indoor
Relative Humidity: < 70%
Temperature: -10 – 70°C

Fuse Information

Model	110/120V	220/230V
KD 300 3	T4A/250V	T2A/250V
KD 300 5	T5A/250V	T3A/250V
KD 600 3	T5A/250V	T3A/250V

To ensure fire protection, replace the fuse only with the specified type and rating.
Disconnect the power cord before fuse replacement.
Make sure the cause of fuse blowout is fixed before fuse replacement.

Front Panel Description

The front panel of the KORAD KD3000-6000 Series DC Power Supply features various controls and indicators for operation.

Controls and Indicators:

Display of Voltage & Current Value: Two digital displays showing the set voltage and current.
Adjustment Knob for Voltage: Used to set the output voltage.
Power ON/OFF Button: Toggles the main power of the unit.
Adjustment Knob for Current: Used to set the output current.
Output Terminals: Positive (+), Negative (-), and Ground (GND) terminals for connecting the load.
Fan: Cooling fan for heat dissipation.
Power Socket: Connection point for the AC power cord.
Indicators:
- OCP: Over-Current Protection indicator.
- C.C: Constant Current indicator.
- C.V: Constant Voltage indicator.
- LOCK: Panel Lock indicator.

Operational Controls:

Voltage Adjustment Knob:
- Push the knob to enable voltage adjustment; the voltage meter will flicker.
- Rotate the knob to change the voltage value.
- Push the knob again to change the resolution of voltage adjustment.
- Press and hold for 3 seconds to lock the front panel controls; press and hold again for 3 seconds to unlock.
Current Adjustment Knob:
- Push the knob to enable current adjustment; the current meter will flicker.
- Rotate the knob to change the current value.
- Push the knob again when the meter flickers to change the resolution of current adjustment.
- Press and hold for 3 seconds to activate OCP mode (output is cut off when set current is reached). In OCP mode, rotate the knob to recover output. Press and hold for 3 seconds again to disable OCP function.
POWER: Press to turn the main power ON or OFF.

Display Information:

Voltage level: The voltmeter displays the setup value of the output voltage.
Current level: The ammeter displays the setup value of the output current.

Condition Indication:

OCP: Lights up when the Over-Current Protection is active.
C.C: Lights up when the power supply is operating in Constant Current mode.
C.V: Lights up when the power supply is operating in Constant Voltage mode.
LOCK: Lights up when the panel controls are locked.

Important Warnings:

WARNING:

TO AVOID ELECTRIC SHOCK, THE POWER CORD PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO GROUND.
FOR CONTINUED FIRE PROTECTION, REPLACE FUSE WITH 250V FUSE OF THE SPECIFIED TYPE AND RATING.
NO OPERATION SERVICEABLE COMPONENTS INSIDE. DO NOT REMOVE COVERS; REFER SERVICING TO QUALIFIED PERSONNEL.

Voltage Rating: AC 220V

Fuse Rating: 2A/250V (example for one configuration)

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