Contents
How do you perform an OC test on a transformer?
Open Circuit Test on Transformer The HV side of the transformer is kept open. Now with the help of variac, applied voltage gets slowly increased until the voltmeter gives reading equal to the rated voltage of the LV side.
What is the purpose of OC and SC test?
Mainly two tests carried out on the electrical transformer that are open circuit and short circuit test of the transformer also known as SC and OC test. The purpose of these tests is to determine the parameter of the equivalent circuit, voltage regulation and efficiency of the single / three-phase transformer.
What is OC and SC test on single phase transformer?
Aim: To determine the efficiency and regulation of a given single phase transformer by. conducting the OC and SC test and also to draw its equivalent circuit. Apparatus Required: Sl No Equipment.
Why rated voltage is applied in OC test?
In OC test, transformer is operated at rated voltage at rated frequency so the maximum loses will be the flux in the core. Since the iron or core losses are at rated voltage, the power input is drawn to supply the iron losses by the transformer under no load.
Why OC test is performed on HV side?
As rated current is less on HV side, it is convenient to conduct this test on HV side by short-circuiting the LV terminals. This ensures that the low range of meters can be used for conducting this test as the wattmeter is connected to the primary side (High voltage side).
Why do you do SC / OC test on transformer?
The purpose of these tests is to determine the parameter of the equivalent circuit, voltage regulation and efficiency of the single / three-phase transformer. this is the main reason for doing SC and OC tests on the transformer. The power required during the test is equal to the power losses occurring in the three-phase transformer.
What kind of tests are done on a transformer?
Mainly two tests carried out on the electrical transformer that are open circuit and short circuit test of the transformer also known as SC and OC test.
Is it possible to predict the performance of a transformer?
It is possible to predict the performance of a transformer at various levels of load by knowing all the equivalent circuit parameters. These circuit parameters are supplied in terms Open Circuit (OC) and Short Circuit (SC) test data of a transformer.
How does SC and OC test work on SlideShare?
Sc and oc test on transformer short circuit and open circuit test on single phase transformer short circuit and open circuit test on single phase transformer Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.