How Do You Inspect a Transformer for Transport Damage?
Quick answer — After transport, inspect the transformer for transit damage: check the impact/tilt recorder, the oil level (and for a leak), the bushings and fittings, the tank for dents/rust, and the internal condition (via the DGA, oil and, if the tank was damaged, an internal inspection). A significant impact or a tilt beyond the limit, or a moisture ingress, must be assessed before proceeding. The DGA and oil tests, and an IR/ratio test, confirm the unit is intact.
How do you check a transformer after transport?
Check the recorders
Read the impact and tilt recorders to see if the unit exceeded the limits during the trip.
Inspect the tank and fittings
Look for dents, rust, a leak, a damaged bushing or fitting, and check the oil level.
Electric tests
Verify the insulation (IR, power factor), the DGA and the oil, and the ratio, so the unit is confirmed intact before it is commissioned.
References & standards
- IEC 60076-1
- IEEE C57.12.90
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Related manufacturers
Prolec GE (GE Vernova) · Prolec GE Waukesha · Hitachi Energy USA · Siemens Energy · Eaton · Virginia Transformer Corp
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Technical content is prepared from engineering references, standards frameworks, manufacturer documentation and industry sources. Contractual or compliance decisions should refer to current official standards. TransformerPath Technical Editorial.
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