When installing a three-phase transformer, checking the voltage and capacity is only part of the commissioning process.<\/p>\n\n\n\n
The transformer phase sequence must also match the requirements of the electrical system before the transformer is energized and connected to the load.<\/p>\n\n\n\n
An incorrect phase sequence can cause problems with motors, parallel transformers, rotating equipment, and downstream electrical systems.<\/p>\n\n\n\n
For this reason, phase sequence should be verified during installation and commissioning rather than assumed from cable labels alone.<\/p>\n\n\n\n
This guide explains what transformer phase sequence means, why it matters, and what engineers should check before energization.<\/p>\n\n\n\n