The equivalent resistance formula of transformer is that r is equal to pkxun 2 (1000xsn 2). This equivalent resistance will not have any influence on the voltage and current of the whole circuit after replacing the original resistance. If the secondary winding is connected with a pure resistance load Rx, and the turns ratio (transformation ratio n 1n2) of the primary and secondary windings is n to 1, then the resistance value of the primary side load of the transformer is the square times of n of Rx.

Equivalent resistance formula information of transformer

In the steady state of power system, there is a mathematical model of transformer. UN and Sn are rated voltage and rated power. The equivalent impedance r is equal to Pk * UN 2 (1000 * Sn 2) X is equal to Uk% * UN 2/( 100 * Sn), where the short-circuit loss percentage of Pk transformer is Uk, and the ground admittance g is equal to P0 (.

The number of turns of the secondary winding is n 1, n2, the voltage of the primary secondary winding is U 1, U2, and the resistance of the secondary winding is R. When analyzing the transformer problem, we always regard it as a left circuit and a right circuit. Now we equate the right loop, and then eliminate it to become a left loop and a single loop, which can make the problem easier.

The equivalent resistance formula of the primary winding in the transformer is: r is equal to k times the sum of r, where k is the transformation ratio n 1n2, and r is always the total resistance of the load in the secondary winding.