Transformers ETT. Three-phase and Single-phase Transformers Unit

The transformer is a very practical unit for getting any supply conditions as 220V. or 127V. or 380V. or anyother in the range between the 3 values. So different electrical supply can be simulated. The Three-phase and Single-phase Transformers Equipment (ETT) includes a single-phase transformer of 500 VA with a transformation ratio of 400/ 230 V and three-phase core-type transformer of 1000 VA and 380V / 3 x 127V. PRACTICAL POSSIBILITIES 6) Three-phase and Single-phase Transformers Equipment (ETT)

1.- Transformation relation measurement.

2.- Test without load of a single-phase transformer.

3.- Single-phase transformer short circuit test.

4.- On load transformer test.

5.- Test without load of a three-phase transformer.

6.- Three-phase transformer short-circuit test.

7.- Autotransformer tests.

8.- Connections types test.

9.- Transformation relation test. The single-phase transformer has an input at 400 V and other input at 230 V in the primary coil. It has two secondary coils with an output voltage of 115 V in each one. The nominal power is 500 VA and the maximum current of the primary coil is 1.5 A for a voltage of 400 V and 3A for a voltage of 230 V. The three-phase transformer has a nominal power of 1000 VA and it consists on a primary take of 380 V with an intermediate take of 220 V. In the secondary coil there are 9 windings, three for each one of the phases, with a voltage of 127 V each one.

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