It is well known that grounding is necessary to ensure the safety of the circuit during the operation of the power system,this ensures that after the circuit receives an internal or lightning overvoltage, the current can find a safe distribution path through the ground.So how to ensure the safety of electrical system grounding? Of course, this depends on the grounding resistance tester.
Poor grounding will block the circuit connection directly. In addition, if the circuit is poorly grounded, it is dangerous and can cause other system failures.In addition, if the circuit is poorly grounded, it is dangerous and can cause other system failures.The grounding resistance tester does not need to disconnect the ground cable and auxiliary electrodes when measuring the grounding system with the lead back.It is safe, fast and easy to use. This is an important tool for circuit troubleshooting, which helps to maintain the normal operation of the circuit and the safety of maintenance personnel.This is an important tool for circuit troubleshooting, which helps to maintain the normal operation of the circuit and the safety of maintenance personnel.
Therefore, electric workers need to test all the grounding of the power system every year to ensure the safety of the entire circuit, which is also part of the routine maintenance of the circuit.Through this periodic inspection, if it is found that the circuit resistance increases by more than 20%, the staff should timely check the cause, troubleshoot the fault, replace the grounding rod or check the grounding system of the entire circuit to check whether there is a fault. Check for problems, reduce resistance and maintain circuit safety.
When using a grounding resistance tester, wear insulation gloves, goggles, and other power protection devices at all times.If the electrode is grounded before it is grounded, it must be tested before the electrode is grounded.Now, direct and precise measurements can be made with the new instrument while the electrodes are still connected.
The large-sized grounding resistance tester is used to measure the grounding resistance of the grounding network and the grounding conductance between ground points.The instrument adopts frequency conversion anti-interference technology, which does not require large current measurement.It can measure accurate data at 50Hz in strong interference environment of substation.The measurement results are displayed by a large LCD screen and can be printed by its own micro printer. The instrument can measure the grounding impedance and resistance at the same time and reflect the actual characteristics of the grounding network.