Structured transformer shipping and handling turns delivery day from a risk event into a checklist exercise.
Transport damage is often invisible from the outside—shifted cores, cracked bushings under caps, moisture past a failed seal. This receiving guide gives site teams the checks and records that protect warranties and claims.
Book the crane, riggers, and inspection time before the truck is dispatched.
Part 1. Why receiving checks protect the project
The hours after arrival decide whether transport damage becomes the carrier’s problem or yours.
Insurance and warranty claims live on evidence gathered at receiving—photos, recorder data, and signed reports.
For related context, see the 80KVA dry type transformer installation guide.
For related context, see the ultimate guide to oil immersed distribution transformers.
Part 2. Packing, lifting, and impact recorders
Verify the dispatch arrangements before the unit leaves the factory.
| Item | What to verify at dispatch |
|---|---|
| Packing method | Export packing matched to transport legs and climate |
| Impact recorders | Fitted, activated, thresholds documented |
| Lifting points | Marked, matching the rigging plan and crane capacity |
| Bushings and accessories | Removed or braced per factory shipping practice |
| Oil or gas fill state | Shipped filled, or dry with a positive-pressure gas cushion |
Agree the recorder policy in the purchase contract; a recorder nobody reads on arrival protects no one.
Part 3. Receiving inspection on arrival
Photograph the unit on the truck before unlashing, then read and log the impact recorder data in the carrier’s presence.
Inspect for shifted supports, oil traces, damaged packing, bent radiators, and cracked porcelain; verify gas cushion pressure where fitted.
Note every observation on the delivery receipt before signing—annotated signatures close claims later.
Part 4. Storage before installation
Store on level supports with the breather or gas cushion maintained per the manual; the rules differ between filled and dry-shipped units.
Schedule periodic checks—pressure, oil level, breather color—with recorded dates.
Covered storage protects accessories, gaskets, and paint from sun and rain damage.
Part 5. Claims and documentation
A claim file contains dispatch photos, the packing list, recorder logs, arrival photos, the annotated delivery receipt, and surveyor contacts.
Notify the carrier and insurer within the policy windows—days, not weeks.
Keep the factory informed; some damage assessments need design input before repair decisions.
Part 6. Product recommendation and Fit Boundary
Product recommendation: Shipping method and fill state vary by series and rating—confirm them during ordering. Start at the transformer product category, then review the S□-M oil-immersed power transformer series and the SC(B) resin insulated dry transformer series against the approved specification.
| Better fit | Poor fit without extra study |
|---|---|
| Sites with rigging plans matched to the GA drawing | Lifting from unmarked points with an undersized crane |
| Teams logging recorders and photos at arrival | Signing clean delivery receipts unread |
| Projects with storage procedures for delayed installation | Leaving a dry-shipped unit unmonitored for months |
Submit the rated kVA and voltage combination, vector group and tap range, no-load and load losses, cooling method and enclosure, and short-circuit impedance target through Contact Us for model-specific confirmation.
Part 7. Common receiving mistakes
- Unlashing before photographs and recorder readout.
- Signing the delivery receipt without exceptions noted.
- Lifting from structural points not designed for rigging.
- Storing outdoors without breather or pressure monitoring.
- Missing insurer notification windows after visible damage.
- Discarding packing materials before the surveyor visit.
FAQ
What should a site check when a transformer arrives?
Photos before unlashing, impact recorder readout, visual inspection for damage and leaks, gas pressure where fitted, and an annotated delivery receipt.
Are impact recorders necessary for transformer shipments?
For meaningful ratings and long transport legs, yes—contract them at purchase and read them at every handover point.
How should a transformer be lifted on site?
Only from the marked lifting points, with rigging and crane capacity per the GA drawing and the factory rigging plan.
Can a transformer be stored outdoors before installation?
Short term with a maintained breather or gas cushion and scheduled checks; covered storage is safer for accessories and finishes.
What documents support a transport damage claim?
Dispatch and arrival photos, recorder logs, packing lists, the annotated delivery receipt, and the surveyor report.
Should oil level be checked at receiving?
Yes for filled units—level and leak traces; dry-shipped units get gas cushion pressure checks instead.
Who signs off the receiving report?
The site receiving engineer, with the carrier’s representative acknowledging the noted exceptions.
