Ground Continuity Resistance Tester

The reliable and effective connection between the grounding down conductor of the power equipment and the ground network is the fundamental guarantee for the safe operation of the equipment. The grounding down conductor is the connection part of the power equipment and the grounding grid. During the long-term operation of the power equipment, the connection may be affected by moisture and other factors, and the connection point may be rusted or even broken. The resistance of the connection point of the grounding grid is increased, which cannot meet the requirements of the electric power regulations, so that there are hidden dangers in the operation of the equipment, and in serious cases, the equipment will lose ground.

The Ground Continuity Resistance Tester is a highly automated portable tester developed by our company. It is used to measure the on-resistance between the ground down conductors of various power equipment in the substation. The instrument is controlled by a high-performance single-chip microcomputer, which can realize the intelligent test process. It has the advantages of small size, convenient carrying, simple operation, high precision, fast test speed, good retestability, and intuitive reading. It is an ideal special instrument that meets the requirements of regulations.

1. The Ground Continuity Resistance Tester has a large output current and is light in weight.

2. Ground Continuity Resistance Tester provides 6 output current options, and the maximum output current is 10A.

3. The Ground Continuity Resistance Tester has a wide measuring range, 0.001Ω-100KΩ.

4. With perfect protection circuit, the performance is more reliable.

5. LCD prompt menu operation, easy to use.

6. 4.3-inch color LCD display, TFT true color display with a resolution of 480×272, real-time printout of test results.

7. With RS485 interface, test data can be transmitted to the background.

8. The machine has a large storage capacity and can store up to 200 test records.

9. With USB interface, test data can be transferred to U disk.

1.Output current: 10A, 5A, 1A, 200mA, 40mA, <5mA, automatic.

2. Range: 0.001Ω-1.6Ω (10A gear)

0.03Ω-3.2Ω (5A range)

0.06Ω-16Ω (1A gear)

0.1Ω-80Ω (200mA gear)

0.3Ω-400Ω (40mA gear)

100Ω-100kΩ (<5mA gear)

3.Accuracy: 0.2%±2μΩ

4.Resolution: 0.1μΩ

5.Working temperature: -20～40℃

6.Ambient humidity: ≤80%RH, no condensation

7.Working power supply: AC220V city power

8.Dimensions: 394*235*273mm

9. Weight: 10.2kg (with test wire)

1. When connecting the test clip to the contact end of the grounding wire, pay attention to the contact end being exposed to the air for a long time, and the surface is covered with an oxide film. The oxide film may cause unstable or inaccurate measurement results, so pay attention to cleaning up when wiring. After the oxide film or the test clip is connected to the terminal, twist the test clip a few times to break the oxide film to ensure a good connection.

2. Before disconnecting the wires, be sure to wait for the instrument to reset. After there is no current output, turn off the power and then remove the wires.

3. When selecting the current, please refer to the range in the technical index column, and do not use it over or under range. When using over-range, because the current does not reach the preset value, the stability of the test result is too poor even if the test is continued forcibly. When the range is under-range, the current is too small, which is unstable for the test data. When these two states appear, confirm the range and select the appropriate range for testing.