Lightning arrester is an important device for protecting electrical circuits from damage caused by lightning strikes. One of the parameters that need to be tested for lightning arrester is leakage current. In this article, we will guide you on how to test leakage current of lightning arrester with a 200V tester, step-by-step.
Step 1: Safety first.
Before testing the lightning arrester, it is important to ensure your safety. Make sure you are wearing protective gear such as gloves, goggles, and insulating shoes. Also, ensure the lightning arrester is completely disconnected and not under any voltage.
Step 2: Connect the tester.
Connect the 200V tester to the input and output of the lightning arrester with the help of suitable cables. The positive probe should be connected to the input side and the negative probe to the output side.
Step 3: Switch on the tester.
Now, switch on the tester and set the voltage level to 200V. The leakage current of most lightning arresters ranges from a few milliamperes to a few microamperes.
Step 4: Record the readings.
Once the tester is on, measure the leakage current reading. Make sure to record the readings after waiting for few seconds, as some lightning arresters take a few seconds to stabilize.
Step 5: Analyze the readings.
Compare the recorded readings with the specified limits. The leakage current limit varies depending on the type and rating of the lightning arrester. If the recorded readings exceed the specified limits, the lightning arrester needs to replace or repaired.
Step 6: Disconnect the tester.
After completing the testing, switch off the tester and disconnect it from the lightning arrester. If any repairs or replacements need to be carried out, ensure there is no voltage present in the electrical circuit before doing so.
In conclusion, testing the leakage current of a lightning arrester with a 200V tester is a crucial step in maintaining the safety and reliability of electrical circuits. By following these step-by-step instructions, you can effectively test the leakage current of a lightning arrester and ensure the safety of the electrical circuit.
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