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APPLICATIONS
Transformers for Grid, Power Plant, Renewable and Industrial Projects
Jiangsu Yuantong Electric supplies oil-immersed power transformers from 110 to 500 kV, distribution transformers from 10 to 35 kV, cast-resin dry-type transformers and box-type substations for utility substations, power plants, solar and wind farms, mines, industrial parks and commercial buildings in more than 20 countries.
BY INDUSTRY
Choose Your Application
PRODUCT SELECTOR
Which Transformer for Which Application
Choose your application to see the products we recommend, with voltage, capacity and a reference project.
Power Grid & Substations
Transformers that step grid voltage between transmission and distribution levels, from 500 kV substations to 10 kV feeders.
1,500 units to Kenya · 150 units to Ethiopia · 330 units to Russia · See project →
Power Plants
Main transformers for step-up and plant distribution, plus dry-type units for indoor auxiliary supply.
2 × 25,000 kVA SZ13 transformers for the Shazhou Power Plant · See project →
Wind & Solar Farms
Box-type substations and transformers that raise inverter and turbine output to medium voltage for grid connection.
Datang Lüsigang PV and a 5.88 MWp rooftop PV project in Yichang · See project →
Industrial & Mining
Transformers for heavy, changing loads in mines, factories and industrial parks.
SZ20 transformers for the Yunfu green mining substation · See project →
Commercial & Infrastructure
Indoor and compact equipment for buildings, data centers and urban networks.
Power Grid & Substations
Transformers that step grid voltage between transmission and distribution levels, from 500 kV substations to 10 kV feeders.
1,500 units to Kenya · 150 units to Ethiopia · 330 units to Russia · See project →
Power Plants
Main transformers for step-up and plant distribution, plus dry-type units for indoor auxiliary supply.
2 × 25,000 kVA SZ13 transformers for the Shazhou Power Plant · See project →
Wind & Solar Farms
Box-type substations and transformers that raise inverter and turbine output to medium voltage for grid connection.
Datang Lüsigang PV and a 5.88 MWp rooftop PV project in Yichang · See project →
Industrial & Mining
Transformers for heavy, changing loads in mines, factories and industrial parks.
SZ20 transformers for the Yunfu green mining substation · See project →
Commercial & Infrastructure
Indoor and compact equipment for buildings, data centers and urban networks.
SELECTION GUIDE
How to Choose a Transformer for Your Project
COMPARISON
Oil-Immersed vs Dry-Type vs Box-Type Substation
| Oil-immersed | Cast-resin dry-type | Box-type substation | |
|---|---|---|---|
| Installation | Outdoor / substation | Indoor, near the load | Outdoor, complete unit |
| Voltage range | 10–500 kV | 10–35 kV | 10–35 kV |
| Capacity range | 30 kVA – 1,000 MVA | 30–25,000 kVA | 30–4,000 kVA |
| Typical sites | Grid, power plants, mines | Buildings, data centers, industry | Solar and wind farms, urban networks |
| Fire risk / maintenance | Oil-filled, needs periodic oil checks | No oil, low maintenance | Depends on the transformer inside |
REFERENCE PROJECTS
Applications in Real Projects
REQUEST A QUOTE
What to Send Us for a Fast Quotation
- Rated capacity (kVA / MVA)
- Primary and secondary voltage
- Vector group and tapping
- Cooling method (ONAN, AN)
- Indoor or outdoor installation
- Applicable standard (IEC, GB)
- Quantity and delivery date
- Destination country and port
FAQ
Application Questions from Buyers
A solar farm normally uses a box-type substation or a step-up transformer to raise the inverter output to 10–35 kV for grid connection. We supply YB and ZGS box-type substations from 30 to 4,000 kVA for PV and wind projects.
Use a cast-resin dry-type transformer when it is installed indoors near the load, because it contains no oil and needs little maintenance. Use an oil-immersed transformer outdoors or for higher ratings, up to 31,500 kVA at 35 kV.
Yes. We supply 35 kV oil-immersed transformers up to 31,500 kVA and SC(B) dry-type transformers up to 25,000 kVA for mines and heavy industry, including SZ20 units for the Yunfu green mining substation in Guangdong.
We design and test transformers to IEC or GB standards, or to the standard named in your tender specification.
Typical lead time is 15 working days to one month, depending on the specification and quantity. We accept orders from one unit.