EV Charging Station Power Solutions
01-14 2026 | By:
EV Charging Station Power Solutions by ZTelec Yuguang
Dry-Type Transformers, Oil-Immersed Transformers & Compact Substations
As electric vehicle adoption accelerates worldwide, reliable power infrastructure has become the foundation of modern EV charging station networks. ZTelec Yuguang provides complete transformer and substation solutions specially designed for fast-charging hubs, highway charging stations, urban charging centers, and fleet depots.
Our product portfolio includes:
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Dry-type resin transformers up to 35kV
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Oil-immersed power transformers up to 110kV
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Prefabricated substations (also called containerized substations or compact substations) up to 35kV
These solutions ensure safe, stable, and efficient power supply for EV charging infrastructure worldwide.
Power Challenges in EV Charging Stations
EV charging stations require:
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High power density
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Continuous operation under fluctuating load
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High safety and low maintenance
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Compact footprint for urban environments
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Fast installation and grid compatibility
ZTelec Yuguang transformer and substation systems are engineered to meet these demanding requirements with superior electrical, thermal, and mechanical performance.
Product Categories for EV Charging Applications
Dry Type Distribution Transformer
🔹 Dry-Type Resin Transformers (Up to 35kV)
Dry-type transformers use epoxy resin encapsulated windings, providing excellent fire resistance and environmental safety.
Advantages:
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Fire-safe and eco-friendly
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Ideal for indoor or semi-indoor EV charging hubs
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Low noise and low maintenance
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High insulation reliability
Typical applications:
Urban charging stations, parking garages, commercial complexes, shopping centers.
🔹 Oil-Immersed Power Transformers (Up to 110kV)
Oil-immersed transformers are designed for high voltage and high capacity grid connections.
Advantages:
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Strong insulation and cooling capability
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Suitable for outdoor substations
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High short-circuit withstand strength
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Long service life
Typical applications:
Grid substations supplying EV charging networks, highway fast-charging hubs, utility distribution systems.
🔹 Prefabricated Compact Substations (Up to 35kV)
Also known as box-type substations, containerized substations, or compact substations, these integrate:
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Transformer
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Medium voltage switchgear
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Low voltage distribution
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Protection and control systems
into a single modular unit.
Advantages:
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Plug-and-play installation
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Reduced civil construction cost
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Compact footprint
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Easy relocation and expansion
Typical applications:
Highway charging stations, urban charging clusters, industrial fleet charging yards.
Compact Sub Stations (CSS)
EV Charging Station Application Scenarios
ZTelec Yuguang solutions are widely used in:
✔ Highway EV fast-charging stations
✔ Urban public charging centers
✔ Commercial parking charging systems
✔ Logistics and bus fleet charging depots
✔ Residential charging infrastructure
✔ Smart city EV energy networks
Technical Specifications
Dry-Type Resin Transformer
| Parameter | Specification |
|---|---|
| Voltage Class | Up to 35kV |
| Capacity Range | 500 kVA – 15 MVA |
| Cooling Method | AN / AF |
| Insulation | Epoxy Resin |
| Frequency | 50 / 60 Hz |
| Phase | Three-Phase |
| Impedance | 4% – 8% |
| Ambient Temperature | –25°C to +50°C |
| Altitude | ≤ 1000 m |
| Standard | IEC 60076-11 / IEEE |
Oil-Immersed Power Transformer
| Parameter | Specification |
|---|---|
| Voltage Class | Up to 110kV |
| Capacity Range | 10 MVA – 200 MVA |
| Cooling Method | ONAN / ONAF |
| Insulation Fluid | Mineral Oil / FR3 |
| Tap Changer | On-load / Off-load |
| Frequency | 50 / 60 Hz |
| Phase | Three-Phase |
| Impedance | 8% – 14% |
| Ambient Temperature | –30°C to +50°C |
| Standard | IEC 60076 / IEEE / ANSI |
Prefabricated Compact Substation
| Feature | Description |
|---|---|
| Voltage Class | Up to 35kV |
| System Type | Prefabricated / Containerized |
| Integration | Transformer + MV + LV |
| Capacity | 500 kVA – 15 MVA |
| Enclosure | Outdoor anti-corrosion |
| Protection | IEC / ANSI compliant |
| Monitoring | Optional SCADA / Remote |
Why Choose ZTelec Yuguang for EV Charging Projects
✔ Professional transformer manufacturer
✔ Strong customization capability
✔ Strict factory testing system
✔ Stable quality and long service life
✔ International standard compliance
✔ Competitive pricing and delivery control
ZTelec Yuguang is committed to supporting global EV infrastructure with reliable power equipment and long-term technical service.
Quality Testing & Certification
Every transformer and substation is fully tested before delivery, including:
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Winding resistance test
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Ratio and polarity test
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Insulation and dielectric test
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Temperature rise test
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Load and no-load loss test
Products comply with IEC, IEEE, ANSI and relevant international standards.
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