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Bahasa IndonesiaOIL-IMMERSED TRANSFORMERS
Sealed Oil-Immersed Transformers for Utility and Industrial Networks
Yuantong builds fully sealed oil-immersed distribution transformers and on-load tap-changing power transformers from 10 kV to 35 kV. The range covers S11-series distribution units, 3D wound core transformers with low no-load loss, and SZ11-series OLTC power transformers for substations, industrial plants and power stations. Every unit is routine-tested in our 220 kV test station before it ships.
BASIC PARAMETERS
Technical Parameters at a Glance
| Item | Range |
|---|---|
| Rated voltage (HV) | 6, 10, 20, 35 kV |
| Rated capacity | 30 – 31,500 kVA |
| Low voltage | 0.4 kV or as specified |
| Vector group | Dyn11 / Yyn0, others on request |
| Tap changer | Off-circuit or on-load (OLTC) |
| Cooling | ONAN / ONAF |
| Core | Grain-oriented silicon steel or 3D wound core |
| Standards | IEC 60076, GB 1094 |
Need a rating outside these ranges? We design to your specification.
PRODUCT RANGE
Oil-Immersed Transformer Models
Choose a series to see full specifications, or send us your rating for a direct quotation.
SELECTION GUIDE
Which Oil-Immersed Series Fits Your Project?
| Series | Voltage | Capacity | Tap changer | Best for |
|---|---|---|---|---|
| S11 series | 6–35 kV | 30–31,500 kVA | Off-circuit | Utility distribution and industrial plants |
| 3D wound core | 10 kV | Per datasheet | Off-circuit | Projects that need low no-load loss |
| SZ11 OLTC series | 10–35 kV | Per datasheet | On-load | Substations with variable supply voltage |
SBH15 amorphous alloy units are listed under Pole-Mounted Transformers.
CONSTRUCTION & CHARACTERISTICS
How Our Oil-Immersed Transformers Are Built
APPLICATIONS
Where Our Oil-Immersed Transformers Are Used
QUALITY & TESTING
Tested Before It Leaves the Factory
PROJECT REFERENCES
Oil-Immersed Transformer Projects
FAQ
Oil-Immersed Transformer FAQ
Oil-immersed transformers suit outdoor substations, higher ratings and sites where the unit is installed away from people. Dry-type units are the better choice indoors near the load. We help you choose based on your site and rating.
An off-circuit tap changer is adjusted with the transformer de-energised and suits stable networks. An on-load tap changer (OLTC) regulates voltage while the transformer is in service and suits substations with changing supply voltage.
Yes. We build copper or aluminium windings to your specification and state the losses for each option in our quotation.
The minimum order is one unit. Standard ratings typically ship 15–30 days after the order and deposit are confirmed; custom designs depend on the specification.
We design to IEC 60076 or GB standards, or to the standard named in your specification. A routine test report is supplied with every unit.
GET A QUOTE
Quotation Within 24 Hours
Send us your specification and our engineers will reply with a technical offer, loss values and lead time.
Include these details for a fast quote:
- Rated capacity (kVA)
- HV / LV voltage and vector group
- Off-circuit or on-load tap changer
- Copper or aluminium windings
- Standard (IEC, GB or other)
- Quantity and destination port