Single-phase transformer study Experiment

Topics covered:

- Step-up or step-down transformer

- Spot welding

- Experience of the melting ring

- Eddy current braking

- Losses and efficiency

Principles and objectives:

The objective of this lab is to characterize the operation of a single-phase transformer consisting of 2 windings coupled on a metal core.

The student will evaluate the impact of the number of turns on the primary and secondary on the transformation ratio in order to raise or lower the input voltage,

Other measurements will allow determining the losses and efficiency of the system.

With no load, it is possible to determine the iron losses.

Under load, the overall efficiency of the system is determined.

Then, under short-circuit conditions, the losses due to eddy currents and joule heating (copper losses) are determined.

- U + I core with detachable stirrups - 150 x 140 x 40 - 1 coil with 72 turns and 4 intermediate outputs - 1 coil with 600 turns and 1 intermediate output - 1 coil with 1200 turns and 1 intermediate output - 1 coil with 600 turns including power cord - 1 pair of steel poles - 1 WALTENHOFEN pendulum - 1 coil with 5 turns of copper - 1 fusion ring + soldering wire - 1 THOMSON ring - Power supply 30V / 5A (ref 281490) Weight: 12.8 kg Packaging: briefcase 510 x 370 x 125 mm Options: - TRM voltmeter sensor (ref 482035) - 1 Foxy 2 console (ref 485000) - 1 A.S. Sup software (ref 000131)