# Transformer Enquiry FAQ — Technical, Payment, Packing & Warranty

Prepare your transformer enquiry with technical selection answers and project-specific questions on delivery, T/T or L/C, FOB/CIF, export packing, warranty and inspection.

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Prepare your transformer enquiry with technical selection answers and project-specific questions on delivery, T/T or L/C, FOB/CIF, export packing, warranty and inspection.

## Technical selection

### Which inputs determine an oil-immersed transformer configuration?

Specify capacity, primary and secondary voltage, frequency, vector group, cooling, impedance and loss targets, together with site altitude and ambient conditions.

### What should be checked beyond rated capacity?

Review ventilation, ambient temperature, altitude, enclosure, noise, losses and short-circuit duty. Cooling and enclosure choices must suit the installation space.

### What determines a prefabricated substation layout?

Start with the incoming network, transformer duty, metering, protection and outgoing feeders. Check operating access, equipment clearances and cable entry together.

### Which information defines a distribution assembly?

Provide system voltage, prospective fault current, load and feeder schedules, protection coordination and required separation, together with the installation environment.

### What must a winding drawing specify?

Specify conductor material and section, turns, winding arrangement, insulation, cooling ducts, lead positions and dimensional tolerances using the buyer’s approved design.

## Commercial and delivery arrangements

Delivery, payment, trade terms, packing, warranty and inspection are agreed to the customer’s project requirements. The quotation and contract record the accepted conditions for that order.

### How is the delivery schedule agreed?

The schedule is confirmed for the customer’s required configuration, drawings, inspections and destination. A specific dispatch or delivery date is agreed in the project quotation and contract.

### Can the project use T/T or L/C payment?

Payment requests, including T/T or L/C, are reviewed with the customer. Percentages, documents, banks and acceptance conditions must be agreed in the formal quotation and contract.

### How are FOB or CIF terms defined?

State the requested rule and named loading or destination port. The applicable FOB/CIF condition, costs, responsibilities and insurance arrangements where relevant are agreed for the specific order.

### How are packing and transport defined?

Packing and shipping are planned to the customer’s requirements, equipment dimensions and mass, handling, storage and route. The packing method and shipping configuration are agreed for that project.

### What warranty applies to the equipment?

The warranty period, coverage, starting point, response arrangements and remedies are agreed against the customer’s project requirements and recorded in the contract.

### How can inspection or witnessing be arranged?

Include requested inspections, witness or hold points, acceptance criteria and documents in the enquiry. The agreed inspection and test plan defines the project arrangements and responsibilities.

Send your requested conditions to Mingyu Ma, Sales Manager, together with the equipment specification.

[Ordering and delivery](https://kestvan.com/trade)

[Prepare a transformer RFQ](https://kestvan.com/distribution-transformer-rfq)

[Discuss your project](https://kestvan.com/contact)

## Technical guides and project preparation

- [Transformer RFQ guide](https://kestvan.com/distribution-transformer-rfq)
- [Ordering & delivery](https://kestvan.com/trade)
- [Request a quotation](https://kestvan.com/contact)