Routine testing of transformers is a standard quality control process performed to verify the transformer's functionality and compliance with design specifications before commissioning or delivery. These tests typically include insulation resistance, winding resistance, turns ratio, polarity, and no-load/load loss measurements. Conducted as per IEC or IS standards, routine testing helps detect manufacturing defects, ensures safety, and confirms electrical performance under normal operating conditions. It is essential for maintaining product reliability and customer confidence. By identifying potential issues early, routine tests reduce the risk of failures in the field and ensure the transformer meets all technical and operational requirements efficiently.