Voorbeelden van het gebruik van Test transformer in het Engels en hun vertalingen in het Nederlands
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Programming
The test transformer should be kept clean frequently.
A simple method for judging AC and DC test transformers.
The test transformer should be wiped clean before use.
A simple method for judging AC and DC test transformers Apr 24, 2019.
Select the test transformer, the main consideration the following.
direct current test transformers.
Long term test transformer 45 kV, 20 KVA Measuring voltage transformers. .
In these cases, it is necessary to have a test transformer without discharge.
protection circuit and test transformer.
It is difficult to make other test transformers without partial discharge.
The Test Transformer calls the booster,
It should also be noted whether the capacity of the test transformer is appropriate.
Current, the rated current of the test transformer output should be greater than the current required to test the device under test. .
In addition to this, it is also necessary to consider whether the voltage on the low-voltage side of the test transformer can match the test conditions in the field.
According to the test transformer output rated current and rated voltage, can determine the capacity of the test transformer, Ie P UnIn.
As the table shows, please connect the control station with the test transformer, also please do not forget to connect with the floor line.
High-voltage test transformer test site test often have trouble the emergence of the situation,
In the case of power detection test site use, the commonly used inflatable type partial discharge test transformer is small in size and light in weight,
Dry test transformer completely changed the old-fashioned test transformer stupid,
When there are many equipments and the test transformer has a small capacity,
the metal cap, the test transformer, the end of the coupling capacitor,
The rated output current of the test transformer should be greater than the current Is required for the test product,
the selection principle is based on the test transformer high voltage side of the rated voltage should be higher than the test voltage of the test article.
Capacity, according to the test transformer rated current, rated voltage and the formula P UnIn determine the capacity of the test transformer.
first select the appropriate voltage with the test transformer, so that the test transformer high voltage side rated voltage Un higher than the test product of the test voltage Us, that is Un> Us.
Connecting the control unit(it is the supplementary equipment of test transformer, detailed see the explaining book) with work frequency 220V(above 10KVA with 380V), adjusting 0-220V/380V voltage input to HZQ(YQ-JZ) test transformer primary winding through autotransformer.
In order to keep the pneumatic high-voltage test transformer in good condition,
Therefore, the partial discharge level of the test transformer and coupling capacitor used should be controlled below a certain allowable amount.
The tested transformer shell and non-pressurized winding should be grounded reliably.