33kv 2500kVA 3 Phase Oil-Immersed Distribution Transformer Manufacturer

Product Description

Our Advantages

Why Choose Us
Advanced technology and strict quality control
Comprehensive after-sales service
Strong reputation and wide market recognition in the electrical equipment industry
Obtained certifications such as IEC, CE, CB, and ISO9001.
Power Transformers
Including electronic transformers, oil-immersed transformers, distribution transformers, and dry-type transformers.
Our power transformers feature high efficiency, low losses, and high reliability, widely used in power systems, industrial enterprises, and new energy projects to enhance transmission stability and safety.
High & Low Voltage Complete Sets
Covering switchgear and distribution cabinets.
These products offer compact structure, stable performance, and easy operation, suitable for industrial, commercial, and residential buildings.
Container-Type Substations
Factory-prefabricated units integrating high-voltage switchgear, power transformers, and low-voltage distribution devices.
Advantages: small footprint, fast installation, reliable operation, low maintenance.
Ideal for urban grid upgrades, residential areas, commercial centers, and industrial sites.

Core Advantages

Core Advantages (Short Version)
Wide voltage regulation – ±10% 
Reactive power optimization – On-load vacuum tap-changer reduces line losses
Robust & low-loss design – Sturdy frame, low noise, low loss
Customization – Over-temperature protection, remote control, parallel operation (max 4 units)
Certified to international standards – ISO 9001, IEC 60076, CE

Specification

nominal  capacity	high  voltage side	High voltage  tap range	low  voltage side	Connection  group labeling	No- load loss	Load Loss	No-load  current	Short Circuit  Impedance
30KVA	11KV 33KV 22KV 10KV 35KV 30KV	±5 ±2×2.5%	0.4KV 0.69KV 0.415KV	Dyn11	100W	630/600W	2.3%	4%
50KVA					130W	910/870W	2.0%	4%
63KVA					150W	1090/1040W	1.9%	4%
80KVA					180W	1310/1250W	1.9%	4%
100KVA					200W	1580/1500W	1.8%	4%
125KVA					240W	1890/1800W	1.7%	4%
160KVA					280W	2310/2200W	1.6%	4%
200KVA					340W	2730/2600W	1.5%	4%
250KVA					400W	3200/3050W	1.4%	4%
315KVA					480W	3830/3650W	1.4%	4%
400KVA					570W	4520/4300W	1.3%	4%
500KVA					680W	5410/5150W	1.2%	4%
630KVA					810W	6200W	1.1%	4.5%
800KVA					960W	7500W	1.0%	4.5%
1000KVA					1150W	10300W	1.0%	4.5%
1250KVA					1360W	12000W	0.9%	4.5%
1600KVA					1640W	14500W	0.8%	4.5%
2000KVA					1960W	19800W	0.8%	5%
2500KVA					2310W	23000W	0.7%	5%

Product characteristics

1. Winding Structure:
Our transformers feature a high-voltage winding with a multi-layer cylindrical, continuous or connecting continuous structure, enhancing shock distribution, minimizing magnetic leakage, and offering high mechanical strength alongside robust short-circuit resistance.

2. Superior Iron Core Design:
We employ high-quality cold rolled grain oriented silicon steel sheets with a full diagonal seam stacking method, which substantially reduces no-load loss and minimizes no-load current for an efficient operation.

3. Enhanced Fastening and Anti-Loosening:
Core and windings are meticulously fastened with precision measures; equipped with self-locking anti-loosening nuts to ensure stability during transportation. Our non-hanging center structure is designed to absorb vibrations, while fastening nuts guarantee long-term operational integrity.

4. Advanced Vacuum Processing:
With vacuum drying of coils and cores, alongside vacuum-filtered oil injection, we ensure minimal moisture presence within the transformer, enhancing its longevity and performance.

5. Ingenious Oil Tank Design:
The oil tank features a corrugated sheet with a breathing function, adept at compensating for oil volume changes due to temperature variations, eliminating the need for an oil storage cabinet and effectively reducing the transformer's height.

6. Additional Features:
Boasting a beautiful appearance and compact size, our transformers require minimal installation space, making them the ideal maintenance-free solution for modern power systems.
These transformers are essential in power plants, substations, industrial and mining enterprises, as well as rural power grids, ensuring efficient power distribution across diverse applications.

 

Company Profile

 Where innovation meets tradition to deliver the highest quality power transformers for a wide range of applications. 

Our factory is equipped with four specialized workshops, each dedicated to different stages of transformer production. This setup allows us to handle everything from core manufacturing to final assembly and testing under one roof. Our production lines are capable of producing transformers with rated capacities ranging from 30kVA to an impressive 10000kVA. Whether it's a small distribution transformer for residential use or a large power transformer for industrial applications, we have the capacity and expertise to meet diverse needs.
From adjusting voltage levels to modifying the physical dimensions of the transformer, our team of engineers works closely with clients to deliver transformers that perfectly fit their specifications.  Our flexible production lines can quickly adapt to different orders, ensuring that each customer receives a product tailored to their exact needs.

After Sales Service

After Sales Service

Regular Inspection Protocols: Frequent checks of the oil level and oil insulation strength are imperative. Address any issues by promptly replacing the transformer oil to maintain optimal performance.

Ensuring Stable Operation: Promote stable transformer operation by preventing overloads and short circuits, and adhering to safe operational practices.
Critical Safety Attention Guidelines: Before installation, ensure adequate plant ventilation and fire prevention measures are in place. Follow all technical specifications for accurate and safe installation.

FAQ

1. Are you a trading company or manufacturer?
We proudly stand as a professional factory with a decade of expertise in crafting high and low voltage switchgears, substations, transformers, and cable distribution boxes. Our extensive range includes various electrical equipment like vacuum circuit breakers and load break switches.
At Jiangsu XinHong Electrical Equipment Co., Ltd., we proudly stand as a distinguished supplier for the State Grid Corporation of China, showcasing our unwavering commitment to excellence.
2. Do you accept customized service? 
We provide exceptional OEM/ODM services, allowing you to personalize your products with your own logo. Our expert technical and quotation teams are dedicated to crafting a customized project plan that perfectly aligns with your specifications and parameters.
3. What is your MOQ?
Our minimum order quantity is set at just 1 piece, ensuring maximum flexibility for your purchasing needs.
4. How long is your delivery lead time?
Delivery lead times are tailored to your specific product requirements and order volume. Typically, we ensure dispatch within 5 to 10 working days, meeting your time-sensitive demands.
5. How do you solve quality problems?
To address any quality concerns, kindly provide detailed photographs of the issues. Our dedicated technical and quality assurance departments will conduct a thorough analysis and deliver an effective solution within 2 days, ensuring your satisfaction.
6. What are your payment terms?
Our payment terms require a 30% T/T advance with the remaining 70% due before shipment. We also accommodate alternative methods such as Western Union and L/C to suit your convenience.