When we are talking about power safety, grounding system is definitely an unavoidable topic. It is just like the "safety valve" of the power system, and the different frequency grounding resistance tester is the loyal "Medical Examiner" of the "safety valve". What is this device that sounds a little "tall"?

What is a different frequency grounding resistance tester?

In short, it is an instrument specially used to measure the resistance value of grounding system. Why test this? Because the size of the grounding resistance is directly related to whether the current can be smoothly introduced into the earth when a fault occurs, so as to protect the equipment and personal safety. If the resistance is too large, hey, the current may "bypass" and bring danger.

What are the "little monsters" that affect the grounding resistance?

The "mood" of the soil: the conductivity of the soil is affected by humidity, temperature, salt content and so on. Just like the mood of people, it will change from time to time.

The "physical condition" of the grounding body itself: the buried depth, material and corrosion degree of the grounding body will affect its "performance".

Environmental factors: surrounding electromagnetic interference, whether it is "squeezed" by other metal objects, these are also potential "little monsters".

Who will do this "physical examination"?

Although its name is a little long, the engineers of Wuhan UHV Power Technology Co., Ltd. can easily use this different frequency grounding resistance tester. This equipment can send a specific frequency signal, accurately calculate the grounding resistance by measuring the ratio of voltage and current, and is not easy to be interfered by the external electromagnetic field, especially suitable for working in a complex power environment.

What is it "closely related"?

Power security: This is the most direct link. Good grounding resistance is the cornerstone to prevent electric shock, lightning stroke and equipment damage.

Stable operation of power grid: a stable grounding system can effectively suppress transient overvoltage and ensure the stable operation of power grid.

Equipment life: poor grounding may lead to accelerated aging of equipment and shorten service life.

How to make the effect of "physical examination" better?

Regular "physical examination": don't wait until "something happened" to remember it. Regular measurement can timely find potential problems.

Select the appropriate "physical examination tool": the test instrument provided by Wuhan UHV Power Technology Co., Ltd. has the advantages of high precision, strong anti-interference ability and can provide more reliable measurement results.

Comprehensive analysis: simple numerical value may not explain all the problems, and comprehensive judgment needs to be made in combination with site conditions, soil environment and other factors.

Timely "treatment": once it is found that the grounding resistance is not up to standard, it should be treated in time, such as deepening the grounding body, replacing the grounding material with serious corrosion, etc.

At this point, you may have a deeper understanding of the different frequency grounding resistance tester. It is not only a cold instrument, but also an important force to protect our power security. For more information about power test equipment, please go to the official website of Wuhan UHV Power Technology Co., Ltd（ https://www.whtgy.com/ ）Look, there are more professional technical interpretation and product information.

Frequently asked questions (FAQs)

Q: why is the measurement of grounding resistance important? Answer: the size of grounding resistance is directly related to whether the fault current can be smoothly introduced to the earth, and is the key index to ensure personal safety, equipment safety and stable operation of power grid.

Q: what factors will affect the measurement results of grounding resistance? Answer: the conductivity of soil (humidity, temperature, salinity), material of grounding body, buried depth, corrosion degree and external electromagnetic interference will affect the measurement results.

Q: what are the advantages of the different frequency grounding resistance tester over the traditional method? Answer: it can send a specific frequency signal, greatly reducing the impact of external electromagnetic interference on the measurement, and improving the accuracy and reliability of the measurement.

Q: how often do I need to measure the grounding resistance? A: it depends on the specific use environment and industry standards. It is generally recommended to carry out inspection at least once a year. It is also recommended to carry out inspection before major holidays or after thunderstorm season.

Q: what are the common treatment methods for unqualified grounding resistance? Answer: we can consider increasing the number of grounding bodies, deepening the buried depth of grounding bodies, replacing severely corroded grounding materials, and improving soil conductivity (such as applying resistance reducing agent).