EXPERIMENT 4: THREE-PHASE TRANSFORMER BANK CONFIGURATION
AIM: To configure a three-phase transformer bank using threesingle-phase transformers.
APPARATUS:
3 X single – phase transformers (100VA, 230/15.6 V) Voltmeters
AC variable power supply
METHOD:
Connect the 3 X single-phase transformers to form a three-phase transformer bank for the following configurations:
Star-star (Y-y)
Star-delta (Y-∆)
Delta-delta (∆-∆)
Delta-star (∆-y)
The high-voltage side (HV) is connected to a three-phase supply and a lighting load to the low- voltage side (LV) of the transformer.
Determine and measurethe phase and line voltageson both sides of a three-phase transformer bank in each configuration.