Direct Recommendation
Compare transformer quotations only after voltage ratio, capacity, impedance, tapping, conductor and accessory scope, losses, tests, drawings, packing, delivery terms, and exclusions are aligned. A lower headline price is not comparable when the technical boundary is different.
For tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs, the useful deliverable is not another broad definition. It is a marked specification, a deviation list, and enough project information for a supplier to identify the correct equipment family. Start from Oil-Immersed Transformers and Dry-Type Transformers; those pages define the current public Jinxing product scope.
Decision Summary
- Buyer intent: Commercial comparison.
- Project context: tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs.
- First evidence to prepare: the approved single-line diagram plus the equipment data sheet, load schedule, or feeder schedule that applies to this request.
- Expected supplier response: a model-family match, marked technical exceptions, applicable evidence, missing inputs, and a defined quotation boundary.
Product Scope Relevant to transformer supplier quotation comparison
The rows below are limited to products already published on the Jinxing website. Use them to identify the relevant family and voltage class, then verify the actual rating, arrangement, components, tests, and documents against the project specification.
| Jinxing product | Public voltage scope | Typical website application | Use this page to |
|---|---|---|---|
| 10kV Oil-Immersed Transformer | 10kV / 11kV class | Commercial, residential, rural grid, industrial | Check the model family and send project-specific requirements |
| 35kV Oil-Immersed Transformer | 35kV class | Medium-voltage distribution and substations | Check the model family and send project-specific requirements |
| 10kV Dry-Type Transformer | 10kV class | Indoor distribution rooms, factories, commercial buildings | Check the model family and send project-specific requirements |
| 35kV Dry-Type Transformer | 35kV class | Medium-voltage indoor systems | Check the model family and send project-specific requirements |
Like-for-like comparison matrix
Comparison only becomes meaningful after every supplier is answering the same technical and commercial boundary. For transformer supplier quotation comparison, the review should produce the following evidence or decision at each stage.
| Review area | Question to close | Evidence or output |
|---|---|---|
| Ratings | Voltage, capacity/current, fault duty, impedance, cooling, and arrangement | Approved specification and single-line diagram |
| Components | Conductor, breaker, relay, metering, accessories, enclosure, and terminals | Supplier bill of materials or technical schedule |
| Verification | Routine tests, special tests, witness points, drawings, certificates, and manuals | Agreed inspection and document plan |
| Delivery scope | Packing, spares, shipping boundary, site services, warranty, and exclusions | Commercial clarification sheet |
Stop and clarify the offer when any of these red flags appear:
- Ranking quotations by total price before normalizing scope.
- Accepting a model label as proof of equivalent construction.
- Leaving losses, accessories, tests, or delivery terms blank.
Six Technical Decisions to Record
These six decisions are selected for the commercial comparison behind transformer supplier quotation comparison.
| Decision | Why it changes the offer | Required project input |
|---|---|---|
| Voltage class and ratio | Match the upstream supply, downstream system, insulation coordination, and local utility requirements. | Record the project value or mark it as an open voltage class and ratio clarification |
| Capacity and load profile | Use connected load, demand, motor starting, harmonics, redundancy, and future expansion rather than nameplate totals alone. | Record the project value or mark it as an open capacity and load profile clarification |
| Voltage adjustment | Confirm nominal ratio, operating voltage variation, tapping range, step size, and whether adjustment is de-energized or on-load. | Record the project value or mark it as an open voltage adjustment clarification |
| Loss and lifecycle review | Compare declared loss data only when rating, material scope, test basis, loading profile, and evaluation period are equivalent. | Record the project value or mark it as an open loss and lifecycle review clarification |
| Drawings and test documents | List required GA drawings, single-line diagrams, nameplate data, routine tests, report references, certificates, and shipping documents. | Record the project value or mark it as an open drawings and test documents clarification |
| Comparable quotation scope | Compare conductor scope, accessories, protection devices, tests, documents, packing, delivery terms, and exclusions on the same basis. | Record the project value or mark it as an open comparable quotation scope clarification |
Engineering Review Notes
1. Voltage class and ratio
Match the upstream supply, downstream system, insulation coordination, and local utility requirements. In the context of tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs, write this decision into the transformer supplier quotation comparison data sheet and ask the supplier to mark any deviation. The review output should be a value, drawing reference, calculation input, or explicit technical clarification rather than an unrecorded assumption.
2. Capacity and load profile
Use connected load, demand, motor starting, harmonics, redundancy, and future expansion rather than nameplate totals alone. In the context of tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs, write this decision into the transformer supplier quotation comparison data sheet and ask the supplier to mark any deviation. The review output should be a value, drawing reference, calculation input, or explicit technical clarification rather than an unrecorded assumption.
3. Voltage adjustment
Confirm nominal ratio, operating voltage variation, tapping range, step size, and whether adjustment is de-energized or on-load. In the context of tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs, write this decision into the transformer supplier quotation comparison data sheet and ask the supplier to mark any deviation. The review output should be a value, drawing reference, calculation input, or explicit technical clarification rather than an unrecorded assumption.
4. Loss and lifecycle review
Compare declared loss data only when rating, material scope, test basis, loading profile, and evaluation period are equivalent. In the context of tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs, write this decision into the transformer supplier quotation comparison data sheet and ask the supplier to mark any deviation. The review output should be a value, drawing reference, calculation input, or explicit technical clarification rather than an unrecorded assumption.
5. Drawings and test documents
List required GA drawings, single-line diagrams, nameplate data, routine tests, report references, certificates, and shipping documents. In the context of tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs, write this decision into the transformer supplier quotation comparison data sheet and ask the supplier to mark any deviation. The review output should be a value, drawing reference, calculation input, or explicit technical clarification rather than an unrecorded assumption.
6. Comparable quotation scope
Compare conductor scope, accessories, protection devices, tests, documents, packing, delivery terms, and exclusions on the same basis. In the context of tender evaluation, budget pricing, distributor purchasing, EPC procurement, and replacement programs, write this decision into the transformer supplier quotation comparison data sheet and ask the supplier to mark any deviation. The review output should be a value, drawing reference, calculation input, or explicit technical clarification rather than an unrecorded assumption.
Applicable Evidence and Its Limits
The Jinxing website references GB 1094, GB/T 6451, GB/T 10228, IEC 60076 for the relevant product families. These are standards families or project references to discuss. They are not a statement that every rating, arrangement, component, or optional test is automatically covered by the same document.
Public evidence available for early review includes:
For this commercial comparison, request a document register that ties each report, certificate, drawing, and routine test to the quoted model or project. Sample evidence supports early qualification; final acceptance records must match the approved configuration and contractual inspection plan.
RFQ Package for transformer supplier quotation comparison
Use this product-specific structure instead of sending only a keyword, catalogue request, or target price.
| RFQ section | Information to provide |
|---|---|
| System | HV/LV voltage, frequency, earthing method, and upstream fault level |
| Transformer duty | kVA or MVA, load profile, vector group, impedance, tapping, and cooling |
| Installation | Indoor or outdoor location, altitude, ambient temperature, enclosure, and terminal arrangement |
| Commercial | Quantity, destination, required documents, inspection points, and delivery target |
Add the project name, inquiry stage, destination country, quantity, local utility or owner rules, trade terms, and delivery target. If information is not yet available, mark it as "to be confirmed" so the quotation can separate assumptions from confirmed requirements.
Related Guide Cluster
Continue with the closest guides in this product cluster:
- Power Distribution Transformer Selection Guide
- Distribution Transformer vs Power Transformer
- Three-Phase Distribution Transformer Specification
Send the Project to Jinxing
Use the Jinxing inquiry form to send the single-line diagram and completed RFQ fields. Ask for the closest Jinxing product match, a list of missing technical inputs, applicable document references, and a quotation that states inclusions and exclusions.
Editorial Scope
Research and drafting were assisted by keyword and generative tools. Product names, routes, public voltage classes, application descriptions, and evidence links were checked against the current Jinxing website data used by this publication workflow. Final engineering, compliance, price, and delivery details require project-specific written confirmation.