Tonghui TH2829 Series - Chapter 6 Transformer Single-Machine Test; Circuit for Transformer Single-Machine Test; Some Parameters of Transformer; Transformer Single Test Circuit and TURN Test

TH2829X Series Operation Manual Chapter 6 Transformer Single-machine Test
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Chapter 6 Transformer Single-machine Test
6.1 Circuit for transformer single-machine test
6.1.1 Some parameters of transformer
6.1.2 Transformer single test circuit and TURN test
On TH2829X, TURN test has 4 display modes:
 Ns: Np =U2/U1
 Np: Ns =U1/U2
 Ns = Np*U2/U1
 Np =Ns*U1/U2
Where, U1 and U2 are the value of auto test, but the value of Np and Ns should be
set in advance on the first line on <Transformer limit setup> page.
It is recommended that users put the winding group with more turns in primary
winding rate, the reasons are as follows:
1) Due to the influence of output internal resistance (10, 30, 50, 100), when the