Product characteristics of [Grounding resistance tester]

1.DC constant current mode output test current;

2. Key setting test current, test time and other parameters;

3. With over-current, over-temperature and other protection functions;

4. Start and turn off the cooling fan in an intelligent manner.

Brief introduction of [Grounding resistance tester]

Model 351A grounding resistance tester is used to measure grounding resistance of home appliances, electrical products and equipment. Adopt LCD display test current and ground resistance value, select Atmel company's high-speed MCU to control, press key to set earthing resistance alarm value, test time and other parameters, use software debugging method to calibrate, make debugging simple and convenient. It has the function of power-off memory parameters. The working state is clear at a glance, simple key operation, will learn. This instrument is not only suitable for rapid flow test of production line, but also suitable for multi-function and high precision requirement of laboratory.

The design principle of the instrument accords with the safety performance testing requirements of , , and other national standards. The connection resistance (or grounding resistance) between the protective grounding terminals or contactors of Class I equipment and the components to which they need to be connected may be tested. This instrument is suitable for testing grounding resistance of all kinds of household appliances, cash registers, power supplies, power tools, electronic instruments and other products.

Technical parameters of [Ground resistance tester](non-standard customization)

Input characteristics：

1. Input voltage: AC 220V ±3%;

2. Input frequency: 50 Hz / 60 Hz;

3. Working environment: temperature: 10 ℃ ~ 30 ℃, humidity: less than 75% RH;

4. Power supply safety pipe: 3A;

5. Dimensions: 300 (W) x 356 (D) x 100 (H);

6. Weight: about 10 kg.

Qualification：

1. Output current range: 1: DC 3 / 40 A / 2: DC 3 / 10A;

2.LCD display current accuracy: ±(3% 3 words);

3. Output waveform: DC;

4. The measured resistance ranges are: 0 ~ 200m Ω in the first stage, 0 ~ 600m Ω in the second stage, and 0 ~ 200m Ω in the second stage.

5. Precision of measuring resistance: ±(3% 3 words);

6. Timer set time: 1 ~ 180s can be set, step value 1s;

7. Timer timing accuracy: ±(3% 2 words);

8. Output voltage:12 V;

9. Determination of resistance measurement:1 gear:0 ~ 200mΩ, step value + 1 mΩ; 2nd gear:0 ~ 600m Ω, step value + 1 mΩ;

10. Whether the display parameter has the power-off memory function: yes;

11. Power supply capacity: 360W

Maintenance and regular maintenance of [grounding resistance tester]

Maintenance:

To prevent the occurrence of electric shock, do not lift the cover of the instrument. All parts inside the instrument need not be maintained by the user. If there is an abnormal condition in the instrument, please ask for maintenance from my laboratory. the attached lines and block diagrams are for reference only.

Regular maintenance:

At least once a year, the AC power supply and relevant accessories of input power line shall be carefully checked and checked to protect the safety of the user and the accuracy of the instrument.

For more information about products, please contact us and visit the company.

Address: Tianhui Road, Wisdom City, Tianhe District, Guangzhou

Tel: 86-20-37896688

Fax:86-20-37896699

Mobile phone: 86-13711272581,Miss Liu

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