Transformer Routine Test Report: Buyer Review Guide for Export Projects

Introduction

A routine test report is one of the buyer most important acceptance documents. It confirms that the transformer shipped matches the agreed technical schedule and passed factory checks before delivery.

This guide is written for overseas buyers, EPC contractors, consultants and local utility reviewers. It uses IEC 60076, IEEE C57 where required, FAT procedures and project acceptance criteria as the main technical language, with the final acceptance route defined by the project specification and local approval process.

1. Buyer Decision Points

Decision point	What to check before RFQ
Ratio test	Confirms voltage ratio and tap positions
Winding resistance	Supports quality check and future maintenance baseline
Loss and impedance test	Confirms guaranteed performance and system study data
Dielectric test	Confirms insulation withstand before shipment
Document consistency	Nameplate, serial number and datasheet must match

2. RFQ Data to Provide

• Required routine test items.
• Witness or non-witness FAT requirement.
• Language and format of test report.
• Guaranteed values and tolerance rule.
• Serial number and nameplate data requirement.
• Additional special tests if required by owner or utility.

3. Supplier Documents to Request

• Routine test report.
• FAT checklist and photos if witnessed.
• Nameplate drawing.
• Technical datasheet.
• Calibration certificate list if required.
• Deviation or non-conformance report if any issue occurs.

4. Engineering Review Checklist

Review item	Why it matters
Serial number	Report must match delivered unit
Measured losses	Should align with guaranteed values
Impedance	Must match protection and fault study assumptions
Ratio and vector group	Wrong connection causes commissioning failure
Dielectric result	Critical for insulation acceptance

5. Reference Standards and Local Approval

Use IEC 60076 routine test requirements or IEEE C57 where the tender specifies North American practice. The project FAT procedure should define any additional acceptance evidence.

Buyer Recommendation

Review the routine test report before shipment release. If serial number, rating, measured losses or impedance do not match the contract data, stop and clarify before dispatch.