Ground testers

Ground Testers - Essential Tools for Electrical Safety

Ground testers are key devices in the arsenal of every electrician and safety inspector.   They are used to measure the effectiveness of grounding in electrical installations. At Onninen, we offer a wide selection of these essential measuring instruments. Our portfolio includes renowned brands such as Fluke and Sonel. Each model has been carefully selected for its reliability and measurement accuracy.

In everyday practice, we see how important regular grounding checks are. Proper grounding protects people and equipment from electric shock. It also protects installations from damage from overvoltages.   That’s why investing in a high-quality grounding tester is not a cost, but a necessity for any safety-conscious company.

Types of ground testers available at Onninen

Our offer includes a variety of grounding testers. They are adapted to different needs and applications. Here are the most popular types:

• Ground Resistance Meters
• Leakage current meters
• Soil resistivity meters

Ground resistance meters are the basic tools for verifying the effectiveness of grounding. They measure the electrical resistance between the ground electrode and the reference ground. Leakage current meters can detect even small currents flowing to the ground.   This is crucial for identifying potential shock hazards.   In turn, soil resistivity meters are invaluable when designing new grounding installations.

How to choose the right ground tester?

The selection of the right ground tester depends on several factors. The most important are the type of installation, the required accuracy and the working conditions. At Onninen we advise on the selection of the optimal device. Here are the key parameters to pay attention to:

• Measurement range
• Measurement accuracy
• Resistance to interference
• Ability to work in difficult conditions
• Additional measurement functions

In our experience, universal testers work best.   They allow you to perform different types of measurements with one device. This saves time and money for our customers. However, in specific applications, dedicated devices may be necessary.

We often come across the question about the differences between cheap and expensive testers. More expensive models usually offer higher accuracy and reliability. They also have additional functions, such as measurement memory or communication interfaces. For professionals who perform measurements regularly, these are significant conveniences. In turn, simpler testers may be sufficient for occasional checks in small installations.

Many customers ask us about wireless ground testers. This is a relatively new technology, but it is already gaining popularity. Wireless models make it easier to measure in hard-to-reach places. They also eliminate the risk of tripping over test leads.   At Onninen we offer both traditional and wireless ground testers from renowned manufacturers.

Recently, we advised on the selection of testers for a large manufacturing plant project. The client needed devices for regular inspections of a large installation. We proposed Fluke multifunction meters with data logging capabilities. This allowed for the automation of the measurement process and trend analysis. The effect was a significant reduction in inspection time and improved safety.

In the case of office reorganization, we most often recommend simpler grounding testers. They are useful for verifying the correct grounding of newly installed sockets and devices. For such applications, we recommend compact Sonel meters. They are easy to use and provide sufficient accuracy for typical office measurements.

Onninen recommends regular calibration of ground testers.   This ensures the reliability of measurements and compliance with standards. As part of our services, we offer periodic inspections and calibrations of devices purchased from us. This is a guarantee that your testers will always provide reliable results.

In our daily practice, we see how important it is to train how to use ground testers. Even the best equipment in unskilled hands can give erroneous results. That is why we organize workshops for our customers. They include the theory of ground measurements and practical exercises with different types of testers.

From Onninen’s perspective, investing in high-quality ground testers is the foundation of electrical safety. They help detect problems before they become a hazard.   In an era of increasing security requirements, solid testers are not a luxury, but a necessity for every professional.

We invite you to familiarize yourself with our full range of grounding testers. Our specialists will be happy to advise you on the selection of the optimal solution for your needs. We guarantee professional support at every stage - from equipment selection, through training, to after-sales service. With Onninen, you gain not only a product, but a comprehensive solution for electrical safety.