Why should transformer phases carry balanced loads

Issue:
What could happen if a transformer has unbalanced loads?

Product Line:
Transformers

Environment:
All standard LV Transformers, EE, EX, Epoxy encapsulated

Resolution:
The following can happen:

• The phases carrying more load is overheated and insulation can get affected and short circuit can occur.
• The above phase may get tripped by safety devices.
• The neutral wire will carry the unbalanced current and get overheated.
• Single phasing may occur.

Released for: Schneider Electric USA