Zhaoxin KXN Series User manual

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

Table of Content
General Security Overview
Preface
Main Functions
Start Guide
Standard Accessories and Selection
Product Size
Technical Parameter
Operational Requirements
System Installation
Product Cleaning
Operating Basis
Overview of Front Panel
Overview of Rear Panel
Connection of Load Line
Characteristics of Constant Voltage/Constant Current
Function Description Model B
Constant Voltage Operation
Constant Current / Current-Limit Setting Operation
Voltage and current calibration operation
Function Description C Model
Constant Voltage Operation
Constant Current / Current-Limit Setting Operation
Function Description E Model
Constant Voltage Operation
Constant Current / Current-Limit Setting Operation
Common Troubleshooting
Fuse change
1
2
2
2
2
2-3
4-12
13
13
14
15
15-16
17
18
18
19
19
19
20
21
21
22
23
23
24
25
25

General Security Overview
1
Please read the following security precautions carefully to avoid personal injury,
and prevent damage to the product or any products connected to this product.
In order to avoid possible danger, you are required to use the product in
accordance with regulations. Only qualified personnel are allowed to perform
repair process.
Avoid fire or personal injury
Use the suitable power line. Please use only the power line designed for this product and certified
by country/region where it is located.
Use correct voltage settings. Before power-on, please ensure that line selector is set at
corresponding position of current voltage.
Product grounding. This product should be grounded through earth conductor of the power line.
The earth conductor must be connected to the earth, in order to avoid electric shock. Before
connecting with the input or output terminals of this product, you should ground the product correctly.
Observe all rated values of terminal. Please observe all rated values and markings on the product,
to avoid risks of fire or electric shock. Before connecting the product, you can consult the manual
firstly for detailed information about rated values.
Disconnect the power. The power switch can disconnect the product from power source. Please
refer to the description of relevant locations. Do not block the power switch; the power switch must
be available for the user at any time.
Do not open the cover. Do not operate this product with the outside cover or panel open.
Do not operate the product when you suspect that it malfunctions. If you suspect that the
product is damaged already, please have it inspected by qualified service personnel.
Keep away from exposed circuits. After power-on, do not touch exposed circuits and components.
Use the suitable fuse. Please only use the fuse type and rated index specified for the product.
Do not operate the product in a humid environment.
Do not operate the product in a flammable and explosive environment.
Please keep the surface of the product clean and dry.
Please ventilate properly. For more details on how to install the product to maintain proper
ventilation, please refer to installation instructions in the Manual.
Terminology in this Manual
The Manual probably includes the following terms:
ti ndicates situations or operations that may cause
personal injury or endanger life.
It points out situations or operations that may cause damage to
this product or other properties.
Symbols and terms on the product
The following terms may be marked on the product:
■ “DANGER” means injury that will occur immediately when you read this mark.
■ “WARNING” represents injury that will not happen immediately when you read this mark.
■ “CAUTION” indicates possible danger to this product or other properties.
The following symbols may be marked on this product:
Warning for High Voltage
Protective Earth Terminal Ground terminal Positive Electrode Negative Electrode
WARNING
CAUTION
CAUTION

2
Preface
Main Functions
■ Current preset, current-limiting protection.
■ Automatic switching of constant voltage/constant current.
■ Fine adjustment knob of voltage/current (in some models)
■ Three-digit display of voltage and current, with display accuracy 0.1V 0.01A
■ Four-digit display of current, with display accuracy 0.01V 0.001A (in some models)
■ Low noise: Temperature-controlled fan is adopted, and it starts automatically to
dissipate heat when internal temperature is greater than 50℃.
Start Guide
Standard Accessories and Selection
Tab. 1: Standard Accessories Table 2: Accessories Selection (power plug)
Power host 1 set North America AC 110V European General AC 220V
Input power line 1 UK AC 220V Australia AC 220V
Manual 1 Switzerland AC 220V India AC 220V
Warranty certificate 1 Brazil AC 220V
Product Size (B model)
126MM
1 5 4 M M
1 4 6 M M
8MM
2 5 8 M M
275MM

Product Size (C model)
Product Size (D model)
3

Type: KXN-1510D KXN-3010D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-15V 0-32V
Output current: 0-10A 0-10A
Voltage-
stabilized state:
Ripple noise： ≤0.3%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.1%+3mA
flow state: Load stability ≤0.2%+3mA
Display accuracy: 3-digit LED digital display of voltage/current ±1% ±1 character
Display resolution: Voltage 0.1V Current 0.1A/0.01A
Boundary dimension: 275 (depth) * 126 (width) * 155 (height)
Weight: 2.14KG 2.14KG
Voltage stabilization degree ≤0.2%+2mV
Load stability ≤0.35%+3mV
Voltage stabilization degree ≤0.2%+2mV
Load stability ≤0.2%+2mV
4
Preface
Technical Parameter
Tab. 1:
Tab. 2:
≤0.1%+2mV
≤0.2%+2mV
Type: KXN-155D KXN-305D KXN-645D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-15V 0-32V 0-64V
Output current: 0-5A 0-5A 0-5A
Voltage-
stabilized state:
Ripple noise： ≤0.3%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.1%+3mA
flow state: Load stability ≤0.2%+3mA
Display accuracy: 3-digit LED digital display of voltage/current ±1%/±1%±1 character
Display resolution: Voltage 0.1V Current 0.01A
Boundary dimension: 275 (depth) * 126 (width) * 155 (height)
Weight: 1.96KG 2.0KG 1.96KG
Voltage stabilization degree ≤0.2%+2mV
Load stability ≤0.35%+2mV ≤0.2%+2mV

5
Preface
Technical Parameter
Type: KXN-1510D M KXN-3010D M
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-15V 0-32V
Output current: 0-10A 0-10A
Voltage-
stabilized state:
Ripple noise： ≤0.3%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.1%+3mA
flow state: Load stability ≤0.2%+3mA
Display accuracy: 3-digit LED digital display of voltage/current ±1% ±1 character
Display resolution: Voltage 0.1V/0.01V Current 0.1A/0.01A/0.001A
Boundary dimension: 275 (depth) * 126 (width) * 155 (height)
Weight: 2.14KG 2.14KG
Voltage stabilization degree ≤0.2%+2mV
Load stability ≤0.35%+3mV
Voltage stabilization degree ≤0.2%+2mV
Load stability ≤0.2%+2mV
Tab. 3:
Tab. 4:
≤0.1%+2mV
≤0.2%+2mV
Type: KXN-155D M KXN-305D M KXN-645D M
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-15V 0-32V 0-64V
Output current: 0-5A 0-5A 0-5A
Voltage-
stabilized state:
Ripple noise： ≤0.3%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.1%+3mA
flow state: Load stability ≤0.2%+3mA
Display accuracy: 3-digit LED digital display of voltage/current ±1%/±1%±1 character
Display resolution: Voltage 0.1V /0.01V Current 0.01A/0.001A
Boundary dimension: 275 (depth) * 126 (width) * 155 (height)
Weight: 1.96KG 2.0KG 1.96KG
Voltage stabilization degree ≤0.2%+2mV
Load stability ≤0.35%+2mV ≤0.2%+2mV

6
Preface
Technical Parameter
Type: KXN-1530D KXN-1540D KXN-1550D KXN-1560D KXN-1580D KXN-15100D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-15V 0-15V 0-15V 0-15V 0-15V 0-15V
0-30A 0-40A 0-50A 0-60A 0-80A 0-100A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy: 3-digit LED digital display of voltage/current ±1% ±1 character
Display resolution: Voltage 0.1V Current 0.1A
Boundary dimension: 366 (depth) * 198 (width) * 158 (height)
Weight: 3.9KG 3.85KG 4.6KG 4.6KG 5.7KG 5.8KG
Tab. 5:
Type: KXN-3020D KXN-3030D KXN-3040D KXN-6010D KXN-6020D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-30V 0-30V 0-30V 0-60V 0-60V
0-20A 0-30A 0-40A 0-10A 0-20A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy: 3-digit LED digital display of voltage/current ±1% ±1 character
Display resolution: Voltage 0.1V Current 0.1A
Boundary dimension: 366 (depth) * 198 (width) * 158 (height)
Weight: 4.0KG 4.5KG 4.5KG 4.5KG 4.0KG
Tab. 6:

7
Preface
Technical Parameter
Type: KXN-1001D KXN-1002D KXN-1003D KXN-10010D KXN-10020D KXN-12010D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-100V 0-100V 0-100V 0-100V 0-100V 0-120V
0-1A 0-2A 0-3A 0-10A 0-20A 0-10A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A Voltage 0.1V Current 0.01A
Boundary dimension:
Weight: 3.4KG 3.45KG 4.3KG 4.4KG 5.3KG 4.5KG
Tab. 7:
Type: KXN-1004D KXN-1005D KXN-1201D KXN-1202D KXN-1203D KXN-1205D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-100V 0-100V 0-120V 0-120V 0-120V 0-120V
0-4A 0-5A 0-1A 0-2A 0-3A 0-5A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A
Boundary dimension: 332 (depth) * 198 (width) * 158 (height)
Weight: 3.4KG 3.45KG 4.3KG 4.4KG 5.3KG 4.5KG
Tab. 8:
Voltage 4-digit (±0.3%)
Current 3-digit (±1%)
LED±1 character
Voltage 4-digit (±0.3%)
Current 4-digit (±0.3%)
LED±1 character
332 (depth) * 198 (width) * 158 (height)
366 (depth) * 198 (width) * 158 (height)
Voltage 4-digit (±0.3%) Current 3-digit (±1%) LED ±1 character

Type: KXN-1501D KXN-1502D KXN-1503D KXN-1504D KXN-1505D KXN-15010D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-150V 0-150V 0-150V 0-150V 0-150V 0-150V
0-1A 0-2A 0-3A 0-4A 0-5A 0-10A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A
Boundary dimension: 332 (depth) ×198 (width) ×158 (height)
Weight: 3.4KG 3.45KG 4.3KG 4.4KG 5.3KG 4.5KG
Tab. 9:
Voltage 4-digit (±0.3%) Current 3-digit (±1%) LED ±1 character
Preface
Technical Parameter
※1
※2
※1 Voltage /Current 4-digit (±0.3%)
※2 332 (depth) ×198 (width) ×158 (height)
Type: KXN-2001D KXN-2002D KXN-2003D KXN-2005D KXN-3001D KXN-3002D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-200V 0-200V 0-200V 0-200V 0-300V 0-300V
0-1A 0-2A 0-3A 0-5A 0-1A 0-2A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A
Boundary dimension: 332 (depth) * 198 (width) * 158 (height)
Weight: 3.4KG 3.45KG 4.3KG 4.4KG 5.3KG 4.5KG
Tab. 10:
Voltage 4-digit (±0.3%) Current 3-digit (±1%) LED ±1 character
8

Preface
Technical Parameter
Type: KXN-5001D KXN-5002D KXN-5003D KXN-6001D KXN-6003D KXN-6005D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-500V 0-500V 0-500V 0-600V 0-600V 0-600V
0-1A 0-2A 0-3A 0-1A 0-3A 0-5A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A
Boundary dimension: 332 (depth) * 198 (width) * 158 (height)
Weight: 3.4KG 3.45KG 4.3KG 4.4KG 5.3KG 4.5KG
Tab. 12:
Voltage 4-digit (±0.3%) Current 3-digit (±1%) LED ±1 character
Type: KXN-3003D KXN-3005D KXN-4001D KXN-4002D KXN-4003D KXN-4005D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-300V 0-300V 0-400V 0-400V 0-400V 0-400V
0-3A 0-5A 0-1A 0-2A 0-3A 0-5A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A
Boundary dimension: 332 (depth) * 198 (width) * 158 (height)
Weight: 3.4KG 3.45KG 4.3KG 4.4KG 5.3KG 4.5KG
Tab. 11:
Voltage 4-digit (±0.3%) Current 3-digit (±1%) LED ±1 character
9
378 (depth)

Preface
Technical Parameter
Type: KXN-3050D KXN-3060D KXN-3080D KXN-30100D KXN-30120D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-30V 0-30V 0-30V 0-30V 0-30V
0-50A 0-60A 0-80A 0-100A 0-120A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A Voltage 0.01V Current 0.1A
Boundary dimension:
Weight: 6.58KG 6.58KG 8.5KG 8.8KG 11KG
Tab. 14:
Voltage 3-digit (±1%)
Current 3-digit (±1%)
LED ±1 character
Type: KXN-8001D KXN-8002D KXN-10001D KXN-10002D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-800V 0-800V 0-1000V 0-1000V
0-1A 0-2A 0-1A 0-2A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 1V Current 0.01A
Boundary dimension: 332 (depth) * 198 (width) * 158 (height)
Weight: 3.4KG 3.45KG 4.4KG 5.3KG
Tab. 13:
Voltage 4-digit (±1%) Current 3-digit (±1%) LED ±1 character
378 (depth) ×260 (width) ×160 (height) 460 (depth)
10
Voltage 4-digit (±1%)
Current 4-digit (±1%)
LED ±1 character

Preface
Technical Parameter
Type: KXN-6030D KXN-6040D KXN-6050D KXN-6060D KXN-6070D KXN-6080D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-60V 0-60V 0-60V 0-60V 0-60V 0-60V
0-30A 0-40A 0-50A 0-60A 0-70A 0-80A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.1A
Boundary dimension: 378 (depth)×260 (width)×160 (height)
Weight: 6.8KG 8.5KG 8.8KG 8.8KG 13KG 13KG
Tab. 16:
Voltage 3-digit (±1%) Current 3-digit (±1%) LED ±1 character
Type: KXN-4860D KXN-5030D KXN-5050D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-48V 0-50V 0-50V
0-60A 0-30A 0-50A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.1A
Boundary dimension: 378 (depth) * 260 (width) * 160 (height)
Weight: 8.5KG 6.58KG 8.5KG
Tab. 15:
Voltage 3-digit (±1%) Current 3-digit (±1%) LED ±1 character
462 (depth)×260 (width)
×160 (height)
11

Preface
Technical Parameter
Type: KXN-10050D KXN-10020D KXN-10030D KXN-15150D KXN-15200D KXN-15300D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-100V 0-100V 0-100V 0-15V 0-15V 0-15V
0-50A 0-20A 0-30A 0-150A 0-200A 0-300A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution: Voltage 0.1V Current 0.01A Voltage 0.01V Current 0.1A
Boundary dimension: 460 (depth)×260 (width)×160 (height)
Weight: 13KG 11KG 12KG 15KG 8.5KG 8.5KG
Tab. 17:
Voltage 4-digit (±1%) Current 4-digit (±1%) LED ±1 character
Type: KXN-30150D KXN-30010D KXN-40010D KXN-15030D
Input voltage: □ AC 220V±10% 50Hz □ AC 110V±10% 60Hz □ AC 240V±10% 50Hz
Temperature: Working temperature: -10℃~40℃ Relative humidity＜80%
Storage temperature: -10℃~40℃ Relative humidity＜90%
Output voltage: 0-30V 0-300V 0-400V 0-150V
0-150A 0-10A 0-10A 0-30A
Output current:
Voltage- Voltage stabilization degree ≤0.5%
stabilized state: Load stability ≤0.5%
Ripple noise： ≤0.5%Vp-p (Peak to peak)
Steady- Current stabilization degree ≤0.5%
flow state: Load stability ≤0.5%
Display accuracy:
Display resolution:
Boundary dimension: 460 (depth)×260 (width)×160 (height)
Weight: 13.5KG 10.5KG 10.5KG 12.5KG
Tab. 18:
Voltage 4-digit (±1%) Current 4-digit (±1%) LED ±1 character
Voltage 0.01V
Current 0.1A Voltage 0.1V Current 0.01A
12

13
Operational Requirements
1. Place the instrument on a workbench or similar surface.
2. Before operation, please make sure that the ambient temperature is
+0℃ ~ + 40℃ (+32℉ ~ +104℉)
WARNING: To ensure normal heat dissipation, please do not stack objects on
the front, sides, or back of the instrument. A ventilation space at least 3cm
should be reserved at the side and back of the instrument, to ensure air
circulation of the instrument.
WARNING: Before using the product and any related instruments, you should
ensure that all security precautions listed in this manual are followed. Although
some instruments and accessories are only used under non-hazardous voltages,
danger may also occur. Only qualified personnel are allowed to use this product
because they need to be able to recognize risk of electric shock and be familiar
with necessary security precautions, to avoid possible injuries. Before use,
you are recommended to read and follow all regulations of installation,
Operation and maintenance information carefully. For complete product
technical specifications, please refer to this manual. Before performing any
maintenance, you should disconnect the power line and all test cables.
Operators of this instrument must take protective measures against electric
shock at all times. The responsible agency must ensure that operators cannot
touch any connection points and/or maintain insulation from each connection
point. In some cases, the connection point must be exposed, which may cause
physical contact. In this case, operators must be trained to know how to protect
themselves from the risk of electric shock. Provided that circuits can work
normally at 72 volts or higher, any conductive parts in
the circuits must not be exposed.
WARNING: Please use wires with an appropriate rated load. The capacity of all
load wires must be able to carry the maximum short-circuit output current of the
power supply, without overheating. If there are multiple loads, each pair of load
wires should safely bear the full rated short-circuit output
current of the power supply.
WARNING: Do not loosen any screws on this product. There are no
user-serviceable components inside.
WARNING: In order to reduce the risk of fire and electric shock, you should
refer to the range of rated values of the power supply.
System Installation
■ Open package of the instrument and check whether you have received all
the items listed in the “standard accessories”.
■ Also, check you have received all other accessories ordered with the
instrument or not.
■ Please visit zhaoxin website (www.zhaoxinpower.com)
for the latest information.
Please perform the following steps, to confirm that the power supply is ready:
Power on and off the Instrument Power
Please power on the instrument power and perform the following steps:
1. Complete all connections.
2. Connect the power line provided with the instrument to the power connector
on the rear panel. Then, connect the power line plug to a properly grounded
power socket.

Operational Requirements
3. Press power button on the front panel to power off the instrument.
WARNING: In order to meet security requirements, you need to ensure that
load wire used must always be able to carry the maximum short-circuit output
current of the power supply, without overheating. If there are multiple loads,
each pair of load wires must safely bear full rated current of power supply.
How to Solve the Problem That Power Supply Fails
Please perform the following steps, in order to avoid possible problems when
the instrument is turned on:
1. Verify whether there is AC at the AC input end of the power supply.Firstly,
inspect whether AC power line is firmly inserted into power connector on the
rear panel of power supply. Also, check whether AC power line connected to the
power supply is powered on. Second, check whether the power switch is turned on.
2. Verify voltage setting of power input.Inspect label on the back of instrument to
see if nominal input voltage is suitable for your country/region (AC 110V or 220V).
Note: In some cases, fuse of electric supply may disconnect if the instrument is
powered with an incorrectly configured mains voltage.
3. Make sure that power line fuse has been installed correctly. If the fuse is
damaged, please change it.
4. For more help, please contact zhaoxin.
Output Check
The following steps are used to check whether power supply produces rated
output and whether it can correctly respond to operations from the front panel.
Voltage Output Check: Please operate the following steps to check basic
voltage function under no-load conditions.
1. Remove all guide lines from the output connector.
2. Turn on the power.
3. Turn the current adjustment knob of power supply clockwise to the maximum.
4. In constant voltage output state of power supply, the C.V light is on. Check
whether the voltage adjustment knob can be adjusted from 0V to the maximum
value of rated range.
Current Output Check: Please operate the following steps to verify basic
current function in the case of a short circuit between power supply outputs:
1. Remove all guide lines from the output connector.
2. Turn on the power.
3. Set the output voltage to about 5-6V.
4. Use insulated test leads to connect a short circuit between (+) and (-) output
terminals. The size of guide lines used should be able to bear electric wire with
the maximum current.
WARNING: To meet security requirements, the load wire used must always be
sufficient to carry the maximum short-circuit output current of power supply,
without overheating. If there are multiple loads, each pair of load wires must be
able to safely bear full rated current of power supply.
5. Turn off the power and remove short-circuit wire between (+) and (-)
output terminals.
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Operational Requirements
Product Cleaning
Regularly check the power supply in accordance with operating conditions.
Please clean outer surface of the instrument as per following steps:
1. Use a lint-free rag to remove floating dust on surface of power supply.
Be careful to avoid scratching the displayer.
2. Use a soft cloth dampened with water to clean the power supply. For more
thorough cleaning, please use 75% isopropanol in water.
Operating Basis
Overview of Front Panel
Controls and display elements are
displayed in following diagram and table
1. Current (left) output display
2. Current (fine) adjustment knob/current
display clearing
3. Current (coarse) adjustment knob
/sound on/off
4. C.C. constant current indicator
5. Power on/off
6. Output terminal (-) negative
7. Ground terminal
8. Output terminal (+) positive
9. Voltage (right) output display
10. Voltage (coarse) adjustment knob
11. Voltage (fine) adjustment knob
12. C.V. Voltage stabilizing indicator
Controls and display elements are
displayed in following diagram and table
1. Voltage (right) output display
2. Current (left) output display
3. Output terminal (-) negative
4. Ground terminal
5. Output terminal (+) positive
6. Power on/off
7.C.C. constant current indicator
8. C.V. voltage stabilizing indicator
9. Voltage adjustment knob
/sound on/off/display of voltage shift
10. Current adjustment knob/
Curren display shift/
Current display clearing
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Operating Basis
Overview of Front Panel
1. Current (left) output display
2. Current (fine) adjustment knob sound on/off
3. Current (coarse) adjustment knob current display clear
4. C.C. constant current indicator
5. Power switch
6. Output start on/off
7. Output terminal (-) negative
8. Ground terminal
9. Output terminal (+) positive
10. Voltage (right) output display
11. Voltage (coarse) adjustment knob
12. Voltage (fine) adjustment knob
13.C.V. voltage stabilizing indicator
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Operating Basis
Overview of Rear Panel
1. Cooling fan
2. AC power connector
3.AC fuse box
1. High-power output
terminal (in some models)
2. AC power connector
3. AC fuse box
4. Cooling fans
1. High-power output
terminal (in some models)
2. AC power connector
3. AC fuse box
4. Cooling fans
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Operating Basis
Connection of Load Line
1. Rotate terminal counterclockwise
to loosen the terminal
2. Insert load line terminal
3. Rotate terminal clockwise to lock the terminal
4. Banana plug: insert the banana plug into terminal block
Type of load line: The load line is an optional accessory for users, and current
capacity of load line must be confirmed when the load line is purchased. The voltage
drop at both ends of each load line cannot exceed 0.5V. The following table shows
rated current of the load line.
Characteristics of Constant Voltage/Constant Current
1. The DC power supply can automatically switch between
constant voltage mode (C.V.) and constant current mode
(C.C.) according to load conditions. When output current
is less than output preset value, the DC power supply
works in constant voltage mode, andfront panel indicator
lights green (C.V.). The output voltage is constant at the
set value; when output current changes with the load and
the current reaches the preset value, the power supply
enters a constant voltage mode (C.C). Indicator on the
front panel is red (C.C.)The current output will be constant
at the preset value, and output voltage will vary with the load. When the output current
is less than the preset value, DC power supply will automatically return to constant
voltage mode (C.V.)
Note 1: Incorrect connection may cause damage to power supply or the load connected
to DC power supply.
2. In actual (C.V.) operation, if output current increases to the setting value due to
decrease of load resistance, the power supply will automatically switch to (C.C.) mode.
When load resistance continues to decrease, the current will remain at the setting
value. The voltage will decrease proportionally (I=V/R). At this time, C.V. output state
can be restored by increasing load resistance or improving setting value of current.
3. In actual (C.C.) operation, if output voltage increases to the setting value due to
increase of load resistance, the power supply will automatically switch to (C.V.) mode.
When load resistance continues to increase, the voltage will remain at the setting
value. The current will decrease proportionally (I=V/R). At this time, C.C. state can be
restored by reducing load resistance or increasing setting value of voltage.
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