ALERT!! The SCB10 dry-type transformer will change the elect

SCB10 dry type transformer in the work is to do a variety of voltage experiments, high temperature and high voltage resistance state is constantly enhanced. Because the high voltage test is very difficult to do, it requires a lot of procedures and steps and a lot of professional technology to be able to do successfully, otherwise the voltage test of SCB10 dry type transformer can not be done. Once the SCB10 dry-type transformer is being tested for voltage resistance, its current will change. Why?

　　First of all, the first question: the principle of SCB10 dry type transformer is electromagnetic induction, the electrical power at the input end P1=U1*I1, the output power P2=U2*I2. In the ideal state (without considering the loss of SCB10 dry transformer), the input power of SCB10 dry transformer is determined by the output power, that is, P1 changes with P2. When the input voltage U1 is constant, the output voltage is determined by the number of turns ratio between the input and output ends of SCB10 dry transformer, so U2 is also constant. So P1 varies with P2 which is the same thing as I1 varies with I2. The above is assumed to be the ideal state of the SCB10 dry transformer. In fact, the SCB10 dry transformer itself has loss, that is, there is energy loss in the electromagnetic conversion process. The resistance R in the winding of the SCB10 dry transformer produces a certain voltage drop UT, which UT =I* R is proportional to the current. The second problem is that the transmission power basically does not remain unchanged. At a constant frequency, the transmission power is determined by the load and is related to the impedance and admittance of the transmission circuit.