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How-to-analyze -a-High-Voltage-Transformer 

 

 
 
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Published:  April 08, 2011
 
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Slide 1: How to analyze a High Voltage Transformer Generally, Transformers convert voltage for make use of in appliances. High- voltage or "stepup" transformers twist lower voltages into higher voltages. A high voltage transformer is a type of electrical transforme r. An appliance similar to microwaves utilizes high- voltage transformers. As they cause a risk of shock, the transformer must be detached, and the capacitors bled, prior to testing. With a willingly accessible resistance tester, however, the entire procedure becomes trouble- free, fast and extremely informative. Knowing how the transformer functions helps recognize what the outcome of the tests mean. It will resolve whether the transformer itself is faulty, or if it is operating appropriately. Instructions : 1. Detach the transformer from its power supply. 2. Consent to power to exhaust from the capacitors. If the division utilizes high- voltage capacitors without exhaust resistors, it may be essential to short-circuit the capacitors. If not, just agree to the resistors to consume power from the capacitors on their individual. 3. Check that the component has no control with the voltmeter. 4. Cut off the high voltage transforme r guide from its valve on the transformer suitable. This may engage just unplugging the wire, or it may need that a set screw be detached. If there are several high- voltage valves, separate each of them now. 5. Place the ohmmeter to its most responsive. Analysis for resistance among the terminal just detached and the earth. The indicator should exhibit everywhere connecting about fifty to about seventy ohms (50-70 Ω) of resistance stuck between these two points. Considerable variance from this series indicates an imperfect transformer.
Slide 2: 6. Divide the guide to the key in terminals on the transformer, subsequent to the similar method as for the high-voltage outputs. 7. Check with the ohmmeter connecting each input terminal. The meter should present a very low down reading (close up to zero ohms (0 Ω)) among these terminals. Also a great deal resistance stuck between these terminals specifies a fault in the transformer. 8. Test between all of the input terminals and the ground. The ohmmeter be supposed to illustrate infinite ohms (∞ Ω), representing no relationship at all between these points. Some finite resistance here designates a short circuit. 9. Detach the low-voltage productivity escorts, and test for resistance between those workstations. The ohmmeter should show a low, finite evaluation (less than one Ω), as with the key in terminals. In excess of resistance there shows a difficulty with the transformer. 10. At last, test between the low-voltage productivity terminals and the position. The measuring device should demonstrate infinite ohms (∞ Ω), signifying no connection at all. Once again, any link here specifies a short circuit. 11. If the entire resistance readings appear proper, clean off the workstations and reconnect the guide, then reconnect the transforme r. The analysis indicates that any troubles with the system lie down elsewhere. Source: electrical transformer

   
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