How to Specify a Fixed Transformer Radiator for Procurement

For a fixed transformer radiator, a model number alone is not a complete purchase specification. The most useful procurement documents define the drawing revision, connection boundaries and deliverables before quotations are compared.

Start with the drawing, not just the model

When enquiring about the PG1300-20/520 radiator, provide the current approved drawing and technical requirements alongside the model and quantity. Confirm the panel specification and count, header arrangement, connection locations, overall dimensions and required materials against those documents.

For repeat orders, check whether the previous drawing revision, technical specification and delivery condition still apply. A familiar model designation does not establish that every project detail is unchanged.

Define the connection and assembly boundary

The radiator must be considered alongside the transformer body design. Identify the connection form, interface locations and assembly requirements in the drawing or technical agreement. If the transformer manufacturer will complete subsequent assembly or welding, agree where the radiator manufacturer’s scope ends and who is responsible for the remaining work.

Where later processing is required, identify any areas that need protection, preparation or limits on surface treatment. Inspection of the radiator before dispatch and inspection of the assembled transformer should be treated as separate responsibilities.

List the supply scope item by item

A quotation for one radiator assembly can leave room for different interpretations. Use a project-specific list to establish what is included and who supplies each item:

• Radiator body: model, drawing number and revision, configuration and quantity.
• Connection components: items supplied with the radiator and items provided by the buyer.
• Lifting or support components: whether required, their location and supply condition.
• Air-release or oil-drain accessories: whether required, their specifications and supplier.
• Identification and packaging: product marking, order references and agreed packaging requirements.
• Documents: drawings, inspection records and other information to be supplied.

These are items to review, not a standard accessory list. Include only those relevant to the actual design and agreed order scope.

Agree on surface condition and inspection requirements

Specify the required surface condition at delivery, protected areas and responsibility for any subsequent coating or local repair. Mark functional areas that must remain uncoated on the drawing. For areas involved in later welding or processing, agree on their condition before manufacture.

Depending on the project, the inspection plan may address appearance, critical dimensions, manufacturing quality, sealing and surface protection. Methods, conditions and acceptance criteria should follow applicable standards and the technical documents agreed by both parties. If witness inspection or document approval is required, identify those checkpoints early.

Compare quotations on an equivalent basis

A lower quoted price is meaningful only when the configuration and obligations are comparable. Check each offer against the same drawing revision, included components, inspection requirements, packaging and documentation. If deliveries are divided into batches, agree on quantities and identification references for each batch.

Changes to the technical scope can affect both pricing and delivery arrangements. Record those changes and request an updated review before placing the order.

Prepare an enquiry for TengQi Technology

To discuss a PG1300-20/520 fixed radiator, share the available drawing, transformer connection requirements, required quantity, intended delivery condition and any inspection or documentation requirements. TengQi Technology can review the request with you to clarify the configuration and proposed supply boundary; final specifications and commercial terms remain subject to project confirmation.