How to analyze a High Voltage Transformer

Transformers can convert voltage for use in appliances. Higher voltage or “step-up”, transformers convert lower voltages into higher voltages. A high voltage Transformer is an example of an electrical transformer. High-voltage transformers can be used in appliances that look like microwaves. Because they can cause shock, it is important to remove the transformer and bleed the capacitors before testing. With a readily accessible resistance tester, however, the whole procedure is very simple, fast, and highly informative. The test results can be interpreted by knowing how the transformer operates. It will reveal if the transformer’s functionality is not working correctly or if it is faulty. In managing electricity infrastructure, all needs must be wise and with quality products. Then MGM Transformers can help to supply varying secondary voltages to externally connected loads. You can find quality electrical and lighting products at the MGM Transformer Company.


1. Disconnect the transformer’s power supply.

2. Consent to the power-to-exhaust from the capacitors. If high-voltage capacitors used by the division are not equipped with exhaust resistors, short-circuiting the capacitors might be necessary. If you don’t agree, then the resistors may be allowed to use power from the caps on their own.

3. You should verify that the component does have control via the voltmeter.

4. Remove the high voltage transformer guide from the valve of the transformer. This could be as simple as unplugging a wire. Or it may require that a set of screws be removed. Separate high-voltage valves if you have several.

5. Place the ohmmeter so that it is most responsive. Analyze for resistance between the terminal and the earth. The indicator should display resistance between the terminal just detached and the earth of approximately fifty to seventy ohms (50-70 O). An imperfect transformer may have a lot of variance.

6. Divide the guide into the key in terminals for the transformer. Then, follow the same steps as with the high-voltage outputs.

7. Verify the ohmmeter that connects each input terminal. These terminals should have a reading of very low (near zero ohms (0 0)). The transformer may also have a fault if there is too much resistance between these terminals.

8. Test between all the input terminals, and the ground. The ohmmeter will show infinite ohms (8 O), and there is no relationship between the points. The short circuit can be described as a finite resistance.

9. The low-voltage productivity accessories should be removed and tested for resistance between the workstations. The ohmmeter must show a low finite evaluation (less then one O), just like the key in the terminals. The transformer may be having difficulty if there is excessive resistance.

10. Finally, test the position against the low voltage productivity terminals. The measurement device should have an infinite ohms (8 O) signifying that there is no connection. A link is a connection that creates a short circuit.

11. If all resistance readings look correct, then clean up the workstations. Next, connect the guide to the transformer. The system is not in trouble, as the analysis suggests.