What is the aim of conducting OC and SC tests on a 1 phase transformer?
RESULT: Hence OC & SC test on a single phase transformer is performed to determine the regulation and efficiency.
Why OC and SC test is performed on HV and LV side respectively?
Why would you connect the HV windings? The open circuit test primarily is used to determine the core (magnetic) losses of the transformer, as with no load, you don’t have to worry about copper (winding) losses. For an SC test, the low voltage side is shorted in order to measure the impedance of the transformer.
Why does SC test require reduced voltage?
The rated current should flow in the winding if the lower value of voltage is applied during the test. It is convenient to conduct the test on the HV side because the meters used for the test are less range.
What is the purpose of open circuit test and short circuit test of a transformer?
Open circuit test and short circuit test are conducted to determine the core loss, copper loss, and equivalent circuit parameters of a transformer.
Which conducting short circuit test on a transformer The following side is short circuited?
While conducting short-circuit test on a transformer which side is short circuited? Explanation: It’s a common practice to conduct SC test from HV side, while keeping LV side short circuited. Thus, short circuited current is made to flow from shorted low voltage terminals i.e. LV side.
What is the working principle of transformer?
Principle – A transformer works on the principle of mutual induction. Mutual induction is the phenomenon by which when the amount of magnetic flux linked with a coil changes, an E.M.F. is induced in the neighboring coil.
Why the OC test is normally done on the LV side?
Why OC test is performed on LV side? Explanation: Open circuit test can be performed on any side but for our convenience and supply voltage available we generally conduct the test on LV side, to get corresponding parameters on HV side we can use transformation ratio. … Current by voltage will give net admittance. 6.
Why UPF wattmeter is used in SC test?
Resistive circuits have unity power factor hence UPF wattmeters are used to measure power in these circuits. … As secondary side is short circuited the entire coil will be purely resistive in nature.So the power factor will be unity. So UPF(Unit Power Factor) Wattmeter is used in SHORT CIRCUIT TEST of Transformer.