The AC series resonance test system under UHV power can help many power workers conduct various power tests more conveniently.
The difference between a series excited test transformer and a regular test transformer is that more than two test transformers are connected in series for power on testing. Series testing of two or more test transformers is more flexible than testing a single transformer. This is because there are different voltage levels, and with the addition of test transformers, the voltage level required for the test can be more flexibly selected. So what is the principle of the series excitation test transformer? This article introduces to you.
The principle of the series excitation test transformer is that, in addition to the high-voltage primary test transformer, the excitation winding is connected in series in the high-voltage winding. The parameters of this set of windings are consistent with the primary winding of the transformer tested later. Power the primary winding of the first level test transformer through the intelligent console. Note that the first stage high voltage winding and casing must be grounded, and then the first end side should be connected to the high voltage end and casing of the second stage test transformer, followed by the excitation power supply of the second stage low voltage. The voltage winding is powered by the first stage series excitation tap.
Due to the principle of the series excitation test transformer, it has advantages such as flexible combination and convenient boosting compared to a single test transformer. For example, it can be used in series with an output voltage several times higher than that of a single test transformer, or it can be divided into several groups of single test transformers for separate use. Therefore, series excited test transformers are more practical in power testing. Its advantages such as light weight and convenient transportation are also very popular among power workers!
