Product Overview
Grid-Ready Wind Power Combined Substation from a Trusted Power Equipment Factory
The ZGSD-Z·F-35 series combined transformer is a unique device designed for wind turbine electricity grid operation. It increases the voltage of the wind turbine generator, ranging from 0.6kV to 0.69kV up to 35kV. It contains a high-voltage load switch, fuse and transformer case that has been put together in a single casing with the insulation liquid of the transformer acting as the insulation and cooling agent of the device.
Applications & circuit protection
The hybrid substation serves as the connection between the wind turbines and the 35 kV collection system. Its purpose is to protect the transformer and allow a secure connection to the grid.
- Wind farms: An up-sizing substation for wind turbines.
- Grid connection: the 35 kV output is for the collection network.
- Distributed wind: a compact system for wind farms.
- EPC delivery: a complete package for developers.
Construction & operating reliability
The closed-up structure safeguards each part of the installation as well as employs transformer oil for insulation and cooling needs, which makes the design process easier.
- Sealed housing construction intended for outdoor application.
- Transformers oil serves the purpose of insulation and cooling.
- Compact design and structure.
- Simple installation in wind parks.
- In-built circuit breaker and fuse protection.
Technical Parameter
| Parameter | Value |
| Rated voltage | 10 / 0.4 kV (HV / LV) |
| Maximum operating voltage | 12 kV (HV side) |
| Rated frequency | 50 Hz |
| Rated capacity | 50-1600 kVA |
| 1-min power frequency withstand voltage | 35 kV |
| Lightning impulse voltage | 75 kV |
| Cooling method | Oil natural air natural (ONAN) |
| No-load regulation | ±5% / ±2×2.5% |
| Degree of protection | IP43 |
| Noise level | ≤50 dB |
| High-voltage rating | 35 kV |
| Low-voltage rating | 0.6 / 0.69 kV (turbine side) |
| Function | Step-up transformer + protection in one unit |
| Switching | High-voltage load switch with fuse |
| Cooling medium | Transformer insulation liquid |
| Enclosure | Sealed, outdoor rated |
| Standard | IEC / GB 17467 |
Substation Price & Project Quotation
The cost of the prefabricated substation is determined by the transformer capacity, the HV/LV configuration, the encasement protection, and the project’s accessories. We provide our customers the total cost of the substation, consisting of the transformer, switchgear, low voltage (LV) panel, and casing as one whole unit.
- One unit price is offered as a complete package.
- Complete project drawings and certifications are included.
- Cost savings to be achieved with the volume-based and repeated orders.
Substation Wiring & Site Connection
The entire assembly unit comes complete with HV/LV entry points prepared and internal wiring completely tested. In the field, the installation is reduced in time because of the presight design involving pre-wiring of the factory installation of the earthing system and both incoming and outgoing cables.
- Internal wiring is already tested in the factory
- HV is prepared and ready for installation
- Earthing system points are also prepared
Compare Substation Options
Choose the configuration that matches your site:
| Feature | This Unit | Alternative |
| Capacity | As specified | Other kVA ratings available |
| HV/LV | Per single-line diagram | Custom configuration |
| Enclosure | IP43 / IP54 | Indoor or outdoor layout |
| Application | Distribution / renewables | Utility, industrial or solar/wind |
Export Markets & Country Compatibility
The entire complete substations are shipped to job sites all over Asia, Africa, the Middle East, Latin America and the Pacific. Every unit is designed and set up for the specifications of the grid for the country of destination, voltage class, and the installation code.
Substation Dimensions, Weight & Delivery
The exact dimensions and weight of the substation depend upon the rating and layout of the equipment. A substation with a rating of 250 kVA to 630 kVA may be 3,000 to 5,000 mm long, 1,500 to 2,500 mm wide and 1,800 to 2,600 mm tall, which is delivered either as a single unit or multiple separate components together.
- Dimensions confirmed by project documents
- Modules designed for access during delivery
- Plan on installation and lifting has been provided.
Standards & certifications
The product is designed according to IEC / GB 17467 standards along with type test certificates for wind project approval.
- Standards: IEC / GB 17467
- Specific design of the transformer, switch, and fuse
- Outdoor design in sealed enclosure
- Documentation for project and grid approvals
OEM & B2B supply support
Being a reliable supplier of power tools and machinery, Subian Electric partners with wind power station builders, constructors, and suppliers to provide combined service of sub-station supply and support.
In case your turbines’ specific configurations require any specific capacity or voltage, please let us know what the output and capacity are, as well as how many units you need and where that should be delivered.
- Samples and schematics will also be available.
- Flexible amounts for wind project purchases.
- OEM/ODM services.
- Customized marking and packing services.
- Technical documentation and certificates will be provided.
Frequently Asked Questions
What is a wind power combined substation?
It integrates the step-up transformer, high-voltage load break switch, and fuse in a single closed unit, boosting turbine voltage to 35kV, to connect to the power grid.
What voltage does it step up?
It converts 0.6-0.69 kV of turbine output to 35kV for further power collection.
Why is it sealed?
A sealed design serves to protect forest machine from environmental conditions, while transformer oil is employed as the coolant and insulating medium.
Do you support wind project supply?
We provide developers of wind power facilities, EPC contractors, or distributors with technical documentation and support.
