1. Unboxing and Basic Familiarization with the Equipment

1.1 Key Technical Specifications

1.2 Unboxing Inspection and Verification of Accessories

1.2.1 Unpacking and Visual Inspection

When unpacking the device, handle it gently to avoid scratching the exterior casing with sharp tools. After unpacking, first inspect the exterior of the device to ensure there is no visible deformation or dents, and that the buttons are not damaged or loose. If you notice any abnormalities with the device or its accessories, do not turn it on. Please contact us immediately.

1.2.2 Main Unit and Accessories

Host: 1 LS9923 host.

Figure 1

The main components are as follows:

Figure 2

Download links for the digital user manual, software, warranty card, and other materials have been sent via email. Please download them as soon as possible. If you missed the email, please feel free to contact us to receive the download links again.

2 Safety Precautions

2.1 Electrical Safety

2.1.1 Power Supply Requirements

Use a single-phase AC 220 V ±10%, 50/60 Hz three-prong outlet; the ground prong must be connected to ground.

2.1.2 Grounding Requirements

The instrument ground wire is reliably connected to the protective ground wire, and the protective ground resistance is ≤4 Ω;

Do not short-circuit the output terminal to the AC power source to prevent the enclosure from becoming energized.

2.2 Environmental Safety

2.2.1 Temperature and Humidity Requirements

Avoid using the device in environments where humidity exceeds 70% (without condensation) or where temperatures fall outside the range of 0–35°C. The optimal operating temperature is 25 ± 2°C.

2.2.2 Environmental Contraindications

Environments with strong magnetic fields and strong electric fields;

Environments containing corrosive gases or liquids;

Areas with flammable and explosive dust, and locations containing hazardous materials;

Environments with heavy dust, high temperatures and humidity, and direct sunlight.

2.3 Operational Safety

During testing, the outer casing of the test object is electrically charged; do not touch it with your bare hands under any circumstances;

The test specimen must be placed on a rubber insulating mat;

Operators must wear rubber insulated gloves;

Operators must have dry hands and must not wear metal jewelry; eating or drinking is prohibited during testing to prevent accidents caused by electric shock;

Before replacing the test object, you must first stop the test and disconnect the test object from the input power supply;

When multiple people are involved, clearly define roles and responsibilities, and confirm them with one another before testing begins to avoid errors.

2.4 Other

For matters not covered in this manual, please proceed with caution or contact us.

3. Equipment Operation

3.1 Parameter Settings

3.1.1 Prerequisites

To ensure operational safety, parameter settings cannot be made while the high-voltage rod and remote control cable are connected to the device. Please remove the high-voltage rod and remote control cable before configuring the parameters.

3.1.2 Setting Test Parameters in Automatic Mode

Figure 3

Figure 4

Figure 5

After selecting IR, press the SET button again to configure the IR test parameters. Note: All specific parameters can be set using the up and down buttons. Once a parameter is set, press the SET button again to configure the next item.

Test voltage settings.

Figure 6

Setting the upper limit.

Figure 7

Lower limit setting.

Figure 8

Test Duration Settings.

Figure 9

Sound Alert Settings.

Figure 10

Select whether to run the IR test.

Figure 11

Switch the test mode to ACW.

Figure 12

Test Voltage Settings.

Figure 13

Setting the upper limit.

Figure 14

Lower limit setting.

Figure 15

Rise time setting: the time required for the test voltage to rise from 0 to the set value.

Figure 16

The test took a long time.

Figure 17

Frequency settings.

Figure 18

Arc detection function. 0 means no detection; 0 through 9 indicates detection sensitivity ranging from low to high.

Figure 19

Sound Alert Settings.

Figure 20

Select whether to run the ACW test.

Figure 21

Switch the test mode to DCW.

Figure 22

Test Voltage Settings.

Figure 23

Setting the upper limit.

Figure 24

Lower limit setting.

Figure 25

Rise time setting: the time required for the test voltage to rise from 0 to the set value.

Figure 26

Test Duration Settings.

Figure 27

Arc detection function. 0 means no detection; values from 0 to 9 indicate detection sensitivity ranging from low to high.

Figure 28

Sound Alert Settings.

Figure 29

Select whether to run the DCW test.

Figure 30

Once all settings are complete, press EXIT to return to the initial screen.

Figure 31

Note: Using GB/T 7000.1-2023 as an example, the following settings can be configured.

3.1.3 Introduction to Manual Mode

If the current test group is A, press the AM key to switch to Manual Mode A*. Manual Mode A* runs only the current test in test group A. If it is an IR test, press the SWITCH key to switch to ACW/DCW testing (provided that test group A is configured to perform ACW/DCW and IR tests simultaneously). Test parameters cannot be modified in manual mode; only the SWITCH and AM keys are available.

That is: In automatic mode, when a test is run, all test items configured in that test group are executed sequentially; in manual mode, when a test is run, only the current test item in that test group is executed.

3.2 Operational Testing

3.2.1 Front Panel Overview and Wiring

Figure 32

Note: Once the remote control cable is plugged in, the Start and Stop buttons on the device’s front panel will be disabled.

3.2.2 Connecting the Test Object

The test object’s casing must be clean and free of oil; place it in the center of the insulating mat, away from the metal work surface.

Taking a light fixture as an example, attach the grounding clamp to the fixture’s ground wire, and use the high-voltage tester to test the fixture’s power line (L or N).

Figure 33

3.2.3 Startup Test

Press the Start button or the control button on the high-voltage probe to start the test; press the Stop button or release the control button on the high-voltage probe to stop the test.

3.2.4 Viewing Test Results

If the test continues until it completes normally, it is considered passed. If any single test item fails, the test stops automatically, and the screen displays the failed test item. Please check whether the issue is due to the parameter settings or the test specimen itself.

4. Daily Maintenance and Care of Equipment

4.1 Routine Maintenance

Before powering on, inspect the equipment to ensure it is clean and free of damage, that the cables show no signs of aging or breakage, and that the connectors are secure; Check the grounding clamps for oxidation or burn marks; if present, wipe them with a specialized contact cleaner, and contact us to replace parts if necessary; after testing is complete, disconnect the power and wipe the equipment surface and test area with an anti-static, dry cloth.

4.2 Long-Term Storage

When the device is not in use for an extended period, store it in a dry, well-ventilated area, away from moisture and direct sunlight; disconnect all cables, store accessories separately, and cover the device with a dust-proof cloth; turn on the device for 30 minutes each month to prevent the internal electronic components from deteriorating.

5. Troubleshooting and Resolving Common Problems