35KV Dry Type Transformer
Your Leading 35KV Dry Type Transformer Supplier
Trust In Grid Co., Ltd. is a professional transformer manufacturer, specializing in the design and production of power transformer, high-voltage switchgear, power distribution equipment, energy storage systems (ESS), magnetic wire, bushing and machining parts. Our power transformers are available in 500KV, 330KV, 220KV, and 110KV models, and are widely used in power utilities, renewable energy systems (solar and wind), industrial facilities, data centers, transportation infrastructure, and OEM applications.
Why Choose Us?
Production Capacity
With 6 factories covering 240,000 m², over 2,000 employees, and 200+ engineers, we support large-scale projects and long-term global supply with more than 30 years of export experience.
Advanced Equipment
We operate a complete set of in-house production equipment, including cutting, winding, CNC machining, vacuum drying, and testing systems, with over 450 machines ensuring stable quality and efficient output.
Quality Control
All products are manufactured and tested in compliance with IEC, IEEE, ANSI, CSA, UL/cUL, CE, and ISO 9001:2015 standards, ensuring reliable performance and smooth international approval.
OEM & ODM Capability
Our engineering team provides OEM/ODM support, including customized design and technical optimization, delivering tailored solutions for utility, industrial, and renewable energy projects.
Specifications of 35KV Dry Type Transformer
|
Parameter |
Specification |
|
Product Category |
35kV Dry Type Transformer |
|
Rated Voltage (HV) |
Up to 35kV |
|
Rated Voltage (LV) |
0.4kV / 0.69kV / Custom |
|
Rated Capacity |
50 kVA – 40,000 kVA |
|
Frequency |
50 Hz / 60 Hz |
|
Phase |
Three-phase (standard) |
|
Cooling Method |
AN (Air Natural) / AF (Air Forced) |
|
Insulation Class |
Class F / Class H |
|
Temperature Rise |
≤100K |
|
Vector Group |
Dyn11 / Yyn0 / Custom |
|
Tapping Range |
±2×2.5% |
|
Impedance Voltage |
2% – 6% |
|
Protection Class |
IP00 / IP20 / IP23 / Custom enclosure |
|
Winding Material |
Copper / Aluminum |
|
Insulation Type |
Cast Resin / VPI |
|
Short-Circuit Strength |
Designed to withstand mechanical and thermal stress |
|
Altitude |
≤1000 m |
|
Ambient Temperature |
≤40°C |
|
Standards |
IEC 60076 / IEEE / ANSI / DOE |
|
Installation |
Indoor / Outdoor |
Safety and Environmental Protection
Oil-free and fire risk is extremely low. The epoxy insulation materials used are self-extinguishing and reduce fire risk and environmental pollution.
Low Maintenance Costs
No oil testing or replacement is needed, reducing maintenance frequency and operating costs.
Compact Size and Light Weight
Oil-free casing and compact design save space and simplify installation.
Moisture and Dust Resistance
High-grade insulation materials and encapsulation adapt to dusty, humid industrial environments.
Long Service Life
Strong anti-aging performance reduces failure rates.
The Different Parts of a 35KV Dry Type Transformer
Core and Windings
The primary winding, connected to the power source, conducts alternating current along a circular path around the core to generate a magnetic field. This field induces a voltage across the secondary winding, enabling energy transfer between the primary and secondary voltages. The precise number of turns within each winding determines the transformer's voltage transformation ratio. Additional layers to the windings can enhance performance.
Insulation
Solid insulation materials ensure electrical separation between the core, windings and winding layers. These materials separate the windings into multiple layers, mitigating potential short circuits and guaranteeing safe energy transmission. By covering windings and isolating them from the magnetic core, the insulation fortifies the transformer against voltage breakdowns, improves resistance to environmental stressors and enhances thermal performance.
Cooling Mechanisms
The cooling mechanisms, typically a blend of natural convection and forced air cooling techniques, maintain the transformer's optimal operational temperature. Balancing these cooling mechanisms helps the transformer's longevity and reliability.
Enclosure and Protection
The enclosure protects the core and windings from the elements and keeps personnel out for safety.
Terminals, Bushings and Connections
Terminals and supplementary components such as bus bars and bushings integrate the external circuits with the transformer's internal windings and prevent flashovers. These components bolster electrical efficiency, promote isolation and fortify the transformer's role within a larger electrical network.
Tap Changer
A de-energized tap changer allows for voltage adjustment. Its essential function is to alter the winding turns ratio for voltage adjustment.
Grounding System
The grounding system redirects redirecting electrical faults away from the transformer, channeling them safely into the ground. This safety measure reduces the probability of electrical shocks, equipment harm, potential fires, injury and death. The grounding system contains a grounding electrode, surge arrestors and fault indicators.
Temperature Monitoring and Protection
Temperature monitoring and protection mechanisms prevent overheating, a significant concern in transformer function, and take action if temperatures rise too high, preserving the transformer's operational integrity. Integration with supervisory control and data acquisition (SCADA) systems facilitates real-time data relay, enabling remote monitoring and analysis of temperature trends.
Comparison of 35KV Dry Type Transformers and Oil-Immersed Transformers
|
Feature |
Dry-Type Transformer |
Oil-Filled Transformer |
|
Cooling Medium |
Air or epoxy resin |
Mineral or synthetic oil |
|
Fire Safety |
Excellent — absence of flammable materials |
Moderate — risk of oil ignition |
|
Maintenance |
Low |
Higher (requires oil testing and replacement) |
|
Environmental Impact |
Eco-friendly, no oil leakage |
Potential for oil spill contamination |
|
Installation |
Indoor or confined spaces |
Typically outdoor |
|
Applications |
Buildings, data centers, and renewable energy |
High-voltage transmission substations |
Commercial Buildings: High-rise offices, shopping malls, hotels, and airports.
Critical Infrastructure: Hospitals, data centers, and communication hubs where reliability is non-negotiable.
Industrial Facilities: Chemical plants, paper mills, and manufacturing facilities with fire-sensitive or clean environments.
Renewable Energy: Solar farms and wind turbine installations.
Underground & Marine: Subways, tunnels, and offshore platforms where fire safety and low maintenance are critical.
Customization Options
Material: Customizable
Structure: Customizable
MOQ: Customizable
Manufacturing Process
Core Lamination Process
The transformer core is manufactured using high-grade CRGO silicon steel to minimize core loss and improve efficiency.
01
Winding Process (Copper / Aluminum)
Windings are produced using high-conductivity copper or aluminum, depending on project requirements.
02
Vacuum Drying & Oil Filling
This process ensures optimal insulation performance and long-term reliability.
03
Testing & Quality Control
Each transformer undergoes strict testing procedures in accordance with international standards.
04
Final Assembly & Packaging
Final assembly ensures mechanical integrity and readiness for transportation and installation.
05
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
Our Service Highlights
Pre-Sales Consultation & Design Support
Early technical engagement to define requirements and deliver optimized solutions.
During Sales & Project Execution
Transparent project management with controlled production, quality tracking, and on-time delivery.
Warranty Advantage
Minimum 2-year warranty on all products, ensuring reliable and risk-free operation.
After-Sales Support
24/7 technical support with fast response, spare parts availability, and training services.
Long-Term Partnership
Lifelong technical support and upgrade guidance for sustained performance.
Packaging & Shipping
Packaging details:
Shockproof foam/moisture-proof film, professional export cartons/wooden crates/pallets.
Final assembly ensures mechanical integrity and readiness for transportation and installation.
Certificates
We're well-known as one of the leading 35kv dry type transformer manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality 35kv dry type transformer made in China here from our factory. Contact us for more details.
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