{"id":3088,"date":"2026-07-02T12:17:27","date_gmt":"2026-07-02T04:17:27","guid":{"rendered":"http:\/\/www.grupoinvercap.com\/blog\/?p=3088"},"modified":"2026-07-02T12:17:27","modified_gmt":"2026-07-02T04:17:27","slug":"how-does-transformer-test-equipment-test-the-corona-discharge-of-a-transformer-42dd-785372","status":"publish","type":"post","link":"http:\/\/www.grupoinvercap.com\/blog\/2026\/07\/02\/how-does-transformer-test-equipment-test-the-corona-discharge-of-a-transformer-42dd-785372\/","title":{"rendered":"How does Transformer Test Equipment test the corona discharge of a transformer?"},"content":{"rendered":"

Hey there! I’m a supplier of Transformer Test Equipment, and today I want to chat with you about how our gear tests the corona discharge of a transformer. It’s a pretty important topic, especially if you’re in the power industry, so let’s dive right in. Transformer Test Equipment<\/a><\/p>\n

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First off, let’s talk about what corona discharge is. Corona discharge is basically a type of electrical discharge that happens when the electric field around a conductor is strong enough to ionize the surrounding air. In a transformer, this can occur when there are high-voltage components or when the insulation is starting to break down. It’s not a good thing because it can cause damage to the transformer over time, leading to costly repairs or even complete failure.<\/p>\n

So, how do we use our Transformer Test Equipment to detect this corona discharge? Well, there are a few different methods, and I’ll go through each of them.<\/p>\n

One of the most common ways is by using a partial discharge detector. This is a piece of equipment that can pick up on the small electrical discharges that happen during corona. It works by measuring the electrical pulses that are generated when the air around the conductor ionizes. These pulses are very small, but our detectors are sensitive enough to pick them up.<\/p>\n

We’ve got a great partial discharge detector in our lineup. It’s easy to use and can be connected to the transformer in a few different ways. You can either use a coupling capacitor, which is a device that allows the electrical signals to pass through while blocking the DC voltage, or you can use a high-frequency current transformer. Both methods work well, and it really depends on the specific setup of the transformer and the testing environment.<\/p>\n

When we use the partial discharge detector, we’re looking for a few key things. First, we want to know the magnitude of the partial discharges. This can give us an idea of how severe the corona discharge is. If the magnitude is high, it could mean that there’s a significant problem with the insulation or the high-voltage components.<\/p>\n

We also look at the frequency of the partial discharges. Different types of corona discharge can have different frequencies, and by analyzing the frequency spectrum, we can get a better understanding of what’s going on inside the transformer. For example, if we see a lot of discharges at a certain frequency, it could indicate a specific type of defect or a problem with a particular part of the transformer.<\/p>\n

Another method we use to test for corona discharge is by using an ultrasonic detector. This works by picking up on the sound waves that are generated by the corona. When the air ionizes, it creates a small shock wave, which produces a high-pitched sound. Our ultrasonic detectors can pick up on these sounds and convert them into electrical signals that we can analyze.<\/p>\n

The advantage of using an ultrasonic detector is that it can be used to locate the source of the corona discharge. You can walk around the transformer with the detector and listen for the sound. When you hear a loud sound, it means that the corona is happening in that area. This can be really useful for pinpointing the exact location of a problem so that you can take the necessary steps to fix it.<\/p>\n

We’ve got a really cool ultrasonic detector that’s very sensitive. It can pick up on even the smallest sounds, and it has a built-in display that shows you the intensity of the sound. This makes it easy to tell if there’s a problem and how severe it is.<\/p>\n

In addition to these methods, we also use visual inspection. This might seem old-fashioned, but it’s still an important part of the testing process. We use special cameras and lighting equipment to look for signs of corona discharge on the surface of the transformer. Corona discharge can leave behind a tell-tale blue or purple glow, and by looking for this glow, we can get an idea of where the corona is happening.<\/p>\n

We also look for other signs of damage, such as charring or discoloration. These can indicate that the corona has been going on for a while and has started to cause damage to the insulation or other components of the transformer.<\/p>\n

Now, you might be wondering why it’s so important to test for corona discharge. Well, as I mentioned earlier, corona discharge can cause damage to the transformer over time. It can erode the insulation, which can lead to short circuits and other electrical problems. It can also cause the transformer to overheat, which can reduce its efficiency and lifespan.<\/p>\n

By detecting corona discharge early, we can take the necessary steps to prevent further damage. This might involve repairing or replacing the insulation, tightening loose connections, or making other adjustments to the transformer. In some cases, we might even recommend replacing the entire transformer if the damage is too severe.<\/p>\n

So, if you’re in the market for Transformer Test Equipment to test for corona discharge, we’ve got you covered. Our equipment is reliable, easy to use, and can provide accurate results. We’ve been in the business for a long time, and we know what it takes to get the job done right.<\/p>\n

If you’re interested in learning more about our products or have any questions about testing for corona discharge, don’t hesitate to reach out. We’d be happy to have a chat with you and help you find the right equipment for your needs. Whether you’re a small electrical contractor or a large power utility, we’ve got the solutions you’re looking for.<\/p>\n

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In conclusion, testing for corona discharge in a transformer is an important part of maintaining its health and performance. By using our Transformer Test Equipment, you can detect corona discharge early and take the necessary steps to prevent further damage. So, if you’re looking for a reliable supplier of test equipment, give us a shout. We’re here to help you keep your transformers running smoothly.<\/p>\n

Ultrasonic Partial Discharge Tester<\/a> References:<\/p>\n