35kV Transformer Selection for Substations
Engineering Intent
35kV transformers are widely used in utility, industrial and renewable substations where insulation level, cooling and protection interfaces must be coordinated.
This article is written for engineers, EPC buyers and procurement teams who need to turn 35kV transformer substation selection into a clear technical request instead of a vague product inquiry.
Key Selection Data
| Item | Data to Confirm |
|---|---|
| Check 1 | 35kV primary system and secondary voltage |
| Check 2 | Substation layout and cable entry |
| Check 3 | Cooling method and ambient condition |
| Check 4 | Protection relay and metering interface |
Standards and Evidence to Request
- IEC 60076 series
- GB or local grid standard when specified
- Factory routine testing
For project approval, request a technical datasheet, outline drawing, wiring or terminal diagram where applicable, routine test report and nameplate information before shipment.
Common Specification Mistakes
- Treating 33kV and 35kV as interchangeable without grid review
- No site layout or cable entry data
- No accessory list
RFQ Checklist
- State 35kV voltage ratio
- Provide capacity and frequency
- Confirm cooling and installation type
- List required accessories
Related Product Paths
Ziyao Power can review the single-line diagram, load schedule, panel drawing or tender sheet and convert the requirement into a practical quotation package.
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