500KV Power Transformer
Your Leading 500KV Power 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.
Technical Specifications of 500KV Power Transformer
|
(MVA) |
Rated Voltage and Tapping Range |
Vector Group |
No Load Current |
Short-circuit Impedance |
No load Losses |
On load Losses |
||
|
HV |
Tapping Range |
LV |
||||||
|
100 |
500/ √3 |
±2×2.5 |
13.8,15.75 |
li0 |
0.16 |
14 |
34 |
203 |
|
120 |
15.75,18,20 |
15 |
39 |
234 |
||||
|
200 |
15.75,18,20,24 |
0.12 |
63 |
342 |
||||
|
223 |
18 |
0.12 |
68 |
371 |
||||
|
240 |
18,20,24 |
0.12 |
72 |
392 |
||||
|
260 |
18,20 |
0.12 |
77 |
414 |
||||
|
380 |
24,27 |
0.12 |
16/18 |
102 |
549 |
|||
|
400 |
0.12 |
106 |
570 |
|||||
|
410 |
0.12 |
108 |
581 |
|||||
|
484 |
0.12 |
123 |
657 |
|||||
Advantages of 500KV Power Transformer
Provide efficient electricity transmission.
Minimize energy losses during transmission.
Step up or step down voltage levels as required.
Provides consistent electricity supply.
Supports various industrial and residential applications.
Regulate voltage levels and enhance the safety of equipment and life.
Core Components
The transformer core is a central structural and magnetic element that supports the windings and provides a path of low magnetic reluctance for magnetic flux. Constructed by stacking and laminating thin, high-grade electrical steel sheets, the core minimizes core losses—specifically eddy currents and hysteresis losses—which are critical factors in transformer energy efficiency and performance.
Windings in Power Transformers
Transformer windings, the primary and secondary coils, are typically made of copper or aluminum. The precise number of turns in each winding determines the voltage transformation ratio, impacting operational safety, voltage regulation, and power quality.
Insulating Materials
Insulation is vital in transformers, safeguarding windings from short circuits, electrical arcing, and breakdowns caused by elevated voltages.
Tap Changer
Tap changers are mechanical or on-load devices used in power transformers for voltage regulation, allowing utility operators and industrial facilities to maintain consistent output voltage despite fluctuations in supply voltage or load changes.
Bushings in Transformers
Bushings act as high-voltage insulators that allow safe passage of electrical conductors through the transformer tank, preventing electrical flashover and dielectric breakdown.
Transformer Tank
The transformer tank, also known as the main tank, is a robust, oil-tight enclosure that houses and shields the transformer core, windings, and auxiliary components from environmental hazards like moisture, dust, and temperature variations.
Conservator Component
The conservator is a cylindrical auxiliary tank located above the main tank and bushings, designed as an expansion chamber for transformer oil. It accommodates oil expansion resulting from temperature variations, maintaining a constant oil level and reducing the risk of tank rupture due to overpressure.
Breather Component
The breather, usually containing silica gel, conditions atmospheric air entering the conservator to remove humidity and particulates, thus preventing moisture from deteriorating transformer oil insulation properties.
Cooling System
The cooling system is indispensable for dissipating the heat generated during transformer operation, a direct consequence of core losses (hysteresis and eddy currents), copper losses (I2R), and stray losses.
Explosion Vent
The explosion vent is a crucial transformer safety device, consisting of a metallic pipe and diaphragm, installed above the conservator tank. It provides a dedicated outlet for the rapid release of gases and oil during severe internal faults, protecting both personnel and equipment from transformer explosions or catastrophic tank ruptures.
Relay
The relay is a specialized protective relay mounted in the pipe between the conservator and main oil tank. It detects the accumulation of fault gases, such as those produced by arcing or overheating, providing early warning of incipient transformer faults.
Maintenance of 500KV Power Transformer
Regular maintenance is essential to ensure the long-term reliability, safety, and performance of transformers. These transformers are often installed outdoors and exposed to environmental factors, making preventive care especially important. Key maintenance practices include:
Oil Testing and Analysis
Many transformers are filled with mineral oil or fire-resistant FR3 fluid. Over time, the insulating fluid can degrade or become contaminated.
Test for: Moisture, acidity, dielectric strength, and dissolved gases
Why it matters: Maintains insulation quality and prevents internal faults or overheating
Visual Inspection
Routine inspections can reveal physical damage or deterioration early.
Check for: Oil leaks, corrosion, damaged gaskets, or signs of tampering
Benefit: Reduces the risk of failure and ensures safety in public-access areas
Thermal Scanning
Infrared scanning helps detect abnormal temperature rise caused by overloading or loose connections.
Non-invasive method to identify hotspots before they lead to faults
Cleaning and Vegetation Control
Dirt, debris, and overgrown vegetation can block ventilation and create safety hazards.
Maintain a clear area around the transformer to prevent overheating and fire risk
Testing Switchgear and Fuses
Built-in switches and protective fuses must be tested periodically to ensure proper function during faults or overloads.
Purpose: Ensures fast fault isolation and protects connected equipment
Grounding Integrity Check
Proper grounding is critical for safe operation.
Verify: Ground resistance, bonding connections, and overall continuity
Result: Reduces the risk of electric shock and equipment damage
Core Lamination Process
The transformer core is manufactured using high-grade CRGO silicon steel to minimize core loss and improve efficiency.
Winding Process (Copper / Aluminum)
Windings are produced using high-conductivity copper or aluminum, depending on project requirements.
Vacuum Drying & Oil Filling
This process ensures optimal insulation performance and long-term reliability.
Testing & Quality Control
Each transformer undergoes strict testing procedures in accordance with international standards.
Final Assembly & Packaging
Final assembly ensures mechanical integrity and readiness for transportation and installation.
Customization Options
Material: Cu / Al
Cooling system: Customizable
Structure: Customizable
MOQ: Customizable
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 500kv power transformer manufacturers and suppliers in China, also support customized service. Please feel free to buy high quality 500kv power transformer made in China here from our factory. Contact us for more details.
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