Tips on How to Test a Transformer

Tips on How to Test a Transformer

May 4, 2009 5:51 AM | | Comments (0)
Transformers form an important components of the electrical distribution equipment that perform the task of transferring electrical energy from one circuit to another through inductively coupled conductors. These form an indispensable part of the electrical and electronic equipment industry and are known to work on two principles.

This article is not exclusively about the characteristic of the transformer but about the various usage tips that one needs to keep in while while working with a transformers. Follow the below tips in order to test your transformer and ensure to become an expert in solving any problems related to it.

1. The ohm meter is the deciding factor, if you know how to use them, then it will be very easy for you to determine the condition of a transformer. Putting the ohm meter on the lowest scale and then adjusting the knob to verify its reading is an easy step to the reading of the ohm.

2. A quick test to check the transformer by conducting a quick test for each winding even while the transform is still connected to the circuits protection device. Transformers comprise of 3 or maybe more coils of wires and cables accessories that can help you determine the reading of the ohm to be somewhere between one and about 10 ohms. Also ensure that you are using a good connection to the coils before you actually buy it.

3. If all your ohms read between one to fine ohm, then there is a possibility that your ohm meter is not of the best quality. To check this all you need to do is unplug or unsolder the leads of the transformer from its circuit and measure the resistance of each coil.

4. In case all the coils are able to pass the above mentioned process, the next step is to test each coil for shorts to other coils. In this case you should be prepared to have a a million ohms reading in order to verify that no short was found between any coil. For example, you can use a test lead of the meter with one brown coil lead and the touch the other leads of the coil with the same coil.

5. In order to ensure that no coils are shorter when compared to any other coil, it is important to repeat the above mentioned step. In case you get a reading of zero resistance, then let me tell you, its time to change your transformer.

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