Zc-203c special transformer ratio tester is the second generation of professional transformer ratio testing equipment newly introduced by our company, which can be used for three-phase transformer test of power system, especially for Z-winding transformer, rectifier transformer and balance transformer test. It is an ideal instrument for transformer ratio, group, polarity and angle test of power system, transformer manufacturer and railway electrical system.
Let's take you to know the calculation method of transformer ratio tester.
Calculation method of transformer ratio tester:
The transformer ratio is the ratio of line voltage (k = U1 / U2), and the ratio of winding voltage is the ratio of turns (U1 / U2 = N1 / N2). Angle wiring side u = u, star wiring side u = √ 3U. Therefore, when the original and secondary winding wiring are the same, the transformer transformation ratio k = U1 / U2 = U1 / U2.
When the primary and secondary winding wiring is angle / star, the transformer transformation ratio k = U1 / U2 = U1 / √ 3u2, that is U1 / U2 = √ 3K. Similarly, when the primary and secondary winding wiring is star / angle, the transformer transformation ratio k = U1 / U2 = √ 3u1 / U2, that is, U1 / U2 = K / √ 3.
The induced potential in the primary and secondary windings of a transformer is directly proportional to the number of turns in the windings.
The ratio of the input voltage of the primary winding to the output voltage of the secondary winding is equal to their turns ratio. The ratio K is called the transformation ratio coefficient.
In addition, if you are not clear, welcome to contact our online customer service, we will answer for you.
