Process of Testing Power Transformer - Ningbo Wanji Electronics Science & Technology Co., Ltd.

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Process of Testing Power Transformer

Power transformer testing is very important to see whether your transformer were in good condition or not. Some factors must to be taken into consideration when test your power transformer. You need a schematic diagram of the equipment. You also need the electronic ability to open the equipment, identify the transformer, read the schematic to find the output voltage points and operate a voltmeter without specific instructions.

Process:

1 Unplug your equipment, appliance or computer, and remove the cover to expose thepower transformer.

2 Read the schematic diagram to determine the voltage level or levels to read at the input and output or outputs of the power transformer. Some transformers have multiple outputs to feed different circuits.

3 Plug the equipment in and turn it on.

4 Set up your voltmeter to read AC volts.

5 Touch the meter leads to each of the outputs of the power transformer. The output voltages should read within the specifications noted on the schematic diagram.
If the voltages read low or not at all, check the input voltage. The power transformer itself may be good, but the input voltage could be bad.

If you read no voltage at the input to the power transformer, look for a fuse or check the operation of the on-off switch.

Be careful when working around energized electronic equipment. You could get a shock that could send you flying. Never work alone.

Be sure your voltmeter is set to the AC scale and at a range consistent with the voltage you expect

The above is some tips or notes to check if your power transformer works normally.

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