Zhaoxin KXN Series - User Manual

Manual
Version: VE-2021-001
KXN Series Switching DC Power Supply

Summary

General Security Overview

Safety Precautions and Handling

Covers essential safety guidelines for operation, handling, and environmental considerations.

Preface

Main Functions

Lists the primary features and capabilities of the DC power supply.

Standard Accessories and Selection

Details included accessories and regional power plug options.

Product Size (B model)

Provides dimensional specifications for the B model.

Technical Parameter

Model Specifications Overview

Presents detailed technical specifications for various KXN series models.

Operational Requirements

Placement and Environment

Guidelines for instrument placement, temperature, and ventilation.

Safety Warnings and Handling

Highlights critical warnings regarding electric shock, load wires, and internal components.

System Installation

Instructions for unpacking, checking items, and website resources.

Power on and off the Instrument Power

Steps for powering the instrument on and off, including connection procedures.

Operating Basis

Overview of Front Panel

Identifies and describes controls and display elements on the front panel.

Function Description Model B

Knob Sound and Current Reset

Details how to control knob sound and reset the current display.

Constant Voltage Operation

Steps for setting and operating the power supply in constant voltage mode.

Constant Current; Current-Limit Setting Operation

Steps for setting and operating the power supply in constant current mode.

Voltage and current calibration operation

Function Description Model C

Knob Sound, Display Shift, and Current Reset

Explains controls for knob sound, display shifting, and current display reset.

Constant Voltage Operation

Steps for setting and operating the power supply in constant voltage mode.

Function Description Model D

Knob Sound, Current Reset, and Power Control

Describes controls for knob sound, current reset, and power output management.

Constant Voltage Operation

Steps for setting and operating the power supply in constant voltage mode.

Constant Current; Current-Limit Setting Operation

Steps for setting and operating the power supply in constant current mode.

Common Troubleshooting

Display Issues and Abnormal Output

Addresses blank displays and problems with constant voltage or current output.

Fuse Change Procedure

Instructions for safely replacing the fuse in the power supply.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features

This document is the user manual for the ZHAOXIN KXN Series Switching DC Power Supply.

Function Description

The KXN Series Switching DC Power Supply offers current preset and current-limiting protection, ensuring safe operation. It features automatic switching between constant voltage (CV) and constant current (CC) modes, adapting to various load conditions. Some models include a fine adjustment knob for precise control of voltage and current. The device is designed with a temperature-controlled fan that automatically activates to dissipate heat when the internal temperature exceeds 50°C, contributing to low noise operation.

Important Technical Specifications

The KXN Series offers a wide range of models with varying input voltages, output voltages, and currents.

General Specifications (common across many models):

• Working Temperature: -10℃ to 40℃ with relative humidity < 80%.
• Storage Temperature: -10℃ to 40℃ with relative humidity < 90%.
• Ripple Noise: Generally ≤0.3%Vp-p (Peak to peak) for D/DM models, and ≤0.5%Vp-p for other models.
• Display Accuracy:
  • 3-digit LED digital display for voltage/current with ±1%/±1%±1 character (D/DM models).
  • Voltage 4-digit (±0.3%), Current 3-digit (±1%) LED ±1 character (some higher voltage/current models).
  • Voltage 4-digit (±0.3%), Current 4-digit (±0.3%) LED ±1 character (some higher voltage/current models).
• Display Resolution:
  • Voltage 0.1V Current 0.01A (D/DM models).
  • Voltage 0.1V Current 0.1A/0.01A (some D/DM models).
  • Voltage 0.1V Current 0.1A (some higher voltage/current models).
  • Voltage 0.01V Current 0.1A (some higher voltage/current models).
  • Voltage 1V Current 0.01A (some higher voltage/current models).

Specific Model Examples:

KXN-155D / KXN-305D / KXN-645D (3-digit display, 0.1V/0.01A resolution):

• Input Voltage: AC 220V±10% 50Hz, AC 110V±10% 60Hz, or AC 240V±10% 50Hz.
• Output Voltage: 0-15V, 0-32V, 0-64V respectively.
• Output Current: 0-5A for all three.
• Voltage Stabilization Degree: ≤0.2%+2mV (KXN-155D), ≤0.1%+2mV (KXN-305D/KXN-645D).
• Load Stability (Voltage): ≤0.35%+2mV (KXN-155D), ≤0.2%+2mV (KXN-305D/KXN-645D).
• Current Stabilization Degree: ≤0.1%+3mA.
• Load Stability (Current): ≤0.2%+3mA.
• Boundary Dimension: 275 (depth) * 126 (width) * 155 (height) mm.
• Weight: 1.96KG (KXN-155D/KXN-645D), 2.0KG (KXN-305D).

KXN-1510D / KXN-3010D (3-digit display, 0.1V/0.1A or 0.01A resolution):

• Input Voltage: Same as above.
• Output Voltage: 0-15V, 0-32V respectively.
• Output Current: 0-10A for both.
• Voltage Stabilization Degree: ≤0.2%+2mV.
• Load Stability (Voltage): ≤0.35%+3mV (KXN-1510D), ≤0.2%+2mV (KXN-3010D).
• Current Stabilization Degree: ≤0.1%+3mA.
• Load Stability (Current): ≤0.2%+3mA.
• Boundary Dimension: 275 (depth) * 126 (width) * 155 (height) mm.
• Weight: 2.14KG for both.

KXN-155DM / KXN-305DM / KXN-645DM (4-digit display, 0.1V/0.01V, 0.01A/0.001A resolution):

• Input Voltage: Same as above.
• Output Voltage: 0-15V, 0-32V, 0-64V respectively.
• Output Current: 0-5A for all three.
• Voltage Stabilization Degree: ≤0.2%+2mV (KXN-155DM), ≤0.1%+2mV (KXN-305DM/KXN-645DM).
• Load Stability (Voltage): ≤0.35%+2mV (KXN-155DM), ≤0.2%+2mV (KXN-305DM/KXN-645DM).
• Current Stabilization Degree: ≤0.1%+3mA.
• Load Stability (Current): ≤0.2%+3mA.
• Boundary Dimension: 275 (depth) * 126 (width) * 155 (height) mm.
• Weight: 1.96KG (KXN-155DM/KXN-645DM), 2.0KG (KXN-305DM).

KXN-1510DM / KXN-3010DM (4-digit display, 0.1V/0.01V, 0.1A/0.01A/0.001A resolution):

• Input Voltage: Same as above.
• Output Voltage: 0-15V, 0-32V respectively.
• Output Current: 0-10A for both.
• Voltage Stabilization Degree: ≤0.2%+2mV.
• Load Stability (Voltage): ≤0.35%+3mV (KXN-1510DM), ≤0.2%+2mV (KXN-3010DM).
• Current Stabilization Degree: ≤0.1%+3mA.
• Load Stability (Current): ≤0.2%+3mA.
• Boundary Dimension: 275 (depth) * 126 (width) * 155 (height) mm.
• Weight: 2.14KG for both.

Higher Power Models (e.g., KXN-1530D to KXN-15100D, KXN-3020D to KXN-6020D, KXN-1001D to KXN-1205D, KXN-1501D to KXN-15010D, KXN-2001D to KXN-3002D, KXN-3003D to KXN-4005D, KXN-5001D to KXN-6005D, KXN-8001D to KXN-10002D, KXN-3050D to KXN-30120D, KXN-4860D to KXN-5050D, KXN-6030D to KXN-6080D, KXN-10050D to KXN-15300D, KXN-30150D to KXN-15030D): These models offer a wider range of output voltages (up to 1000V) and currents (up to 300A).

• Voltage Stabilization Degree: Generally ≤0.5%.
• Load Stability (Voltage): Generally ≤0.5%.
• Current Stabilization Degree: Generally ≤0.5%.
• Load Stability (Current): Generally ≤0.5%.
• Boundary Dimensions: Vary, with common sizes including 366 (depth) * 198 (width) * 158 (height) mm, 332 (depth) * 198 (width) * 158 (height) mm, 378 (depth) * 260 (width) * 160 (height) mm, and 460 (depth) * 260 (width) * 160 (height) mm.
• Weights: Vary significantly depending on power output, from around 3.4KG to 15KG.

Usage Features

General Security Overview:

• Always use the provided power line and ensure correct voltage settings (AC 110V, 220V, or 240V).
• The product must be properly grounded to prevent electric shock.
• Observe all rated values and markings on the terminals.
• Disconnect power before any maintenance.
• Do not operate with the cover open or if malfunctioning.
• Keep away from exposed circuits and use the specified fuse type.
• Avoid humid, flammable, or explosive environments.
• Ensure proper ventilation with at least 3cm clearance on sides and back.

Front Panel Controls (Model B, C, D, E):

• Current and Voltage Displays: Digital displays for real-time output.
• Coarse and Fine Adjustment Knobs: For precise setting of current and voltage.
• C.C. / C.V. Indicators: LEDs to show constant current or constant voltage mode.
• Power Switch: To turn the unit on/off.
• Output Terminals: Positive (+), Negative (-), and Ground (GND).
• Output On/Off Button (Model D/E): To control power output to the terminals.

Rear Panel Features:

• Cooling Fan: For heat dissipation.
• AC Power Connector: For connecting the input power line.
• AC Fuse Box: Contains the protective fuse.
• High-power Output Terminal (some models): Additional terminals for high current applications.

Connection of Load Line:

• Terminals are loosened by rotating counterclockwise and tightened by rotating clockwise.
• Banana plugs can be inserted directly.
• Load lines must be capable of carrying the maximum short-circuit output current without overheating.

Constant Voltage/Constant Current Characteristics:

• The power supply automatically switches between CV and CC modes based on load conditions.
• In CV mode, the output voltage is constant at the set value, and the C.V. indicator is green.
• In CC mode, the output current is constant at the preset value, and the C.C. indicator is red.

Knob Sound On/Off (Model B, C, D, E):

• Long press the coarse adjustment knob of current (or voltage for some models) for 3-6 seconds in standby to toggle the knob sound.

Current Display Reset (Model B, C, D, E):

• Without any load, long press the fine adjustment knob of current for 3 seconds to reset the current display to zero. This is useful if the display does not return to zero after prolonged use.

Power Output Control On/Off (Model D/E):

• Long press the Output button for 3 seconds to turn off power output control (terminals always charged). Long press again for 6 seconds to turn it back on. Short press to start/turn off output.

Voltage and Current Calibration Operation:

• Requires an electronic load with high accuracy (preferably ten times that of the power supply).
• Involves a sequence of pressing coarse and fine adjustment knobs while turning on the power to enter calibration mode.
• Steps include low-side and high-side calibration for current measurement, current limit, and constant voltage.

Maintenance Features

Product Cleaning:

• Regularly clean the outer surface with a lint-free rag to remove dust, being careful not to scratch the display.
• For more thorough cleaning, use a soft cloth dampened with water or 75% isopropanol.

Troubleshooting:

• No Display on Power On: Check power connector and fuse.
• Abnormal Constant Voltage Output: Check if maximum output power meets load requirements, if current setting is appropriate, and for short/open circuits or poor contact in load cables.
• Abnormal Constant Current Output: Check if maximum output power meets load requirements, if voltage setting is appropriate, and for short/open circuits or poor contact in load cables.

Fuse Change:

• Cut off power and remove the power line.
• Use a slot-type screwdriver to take out the fuse holder.
• Replace the fuse with one of the specific specifications and rated value.

Zhaoxin KXN Series Specifications

General

Brand	Zhaoxin
Model	KXN Series
Category	Power Supply
Language	English