Introducing our revolutionary oil-immersed transformer, a marvel of engineering designed for unparalleled performance and efficiency. This innovative transformer boasts a meticulously optimized structure and enhanced functionality, utilizing oil as its principal insulation and cooling medium. Experience superior cooling techniques, including the self-cooling, air-cooling, and water-cooling systems, along with the advanced forced oil circulation. The sophisticated assembly includes vital components like the robust iron core, precision-engineered windings, a durable oil tank, and a strategically designed oil reservoir. Additional features include a highly responsive respirator, an explosion-proof pressure release valve, efficient heat sinks, and high-grade insulation bushings. The integrated tap changer, quick-responding gas relay, reliable thermometer, and state-of-the-art oil purifier ensure the transformer operates at peak efficiency, promising durability and reliability.
Due to the continuous immersion of the high-quality silicon steel laminates within the transformer, the oil effectively penetrates the interlayers, utilizing the elastic properties of transformer oil to provide a cushioning effect. As a result, our oil-immersed transformer operates with remarkably low noise. However, it is important to note that the voltage regulating switch is ingeniously housed inside the oil tank. Therefore, during voltage adjustments, the switch's contact condition is not externally visible. If the contact is compromised, it can lead to a disruption in the circuit's integrity. Should the contact prove inadequate and the load becomes excessive, the switch may become susceptible to damage or burning out.
Transformer normal service conditions
1. The installation height does not exceed 1000 meters above sea level;
2. Maximum ambient air temperature reaches +40ºC;
3. Maximum daily average air temperature is +30ºC;
4. Maximum annual average air temperature is +20ºC;
5. Minimum outdoor air temperature recorded at -25ºC.
(detailed specifications are provided for operation under special service conditions)
Type of cooling
(1) Typically, oil-immersed transformers employ three sophisticated cooling methodologies: self-cooling, air-cooling, and forced oil circulation.
The self-cooling approach leverages the natural convection of oil to effectively dissipate heat.
(2) The air-cooling enhancement builds upon the self-cooling foundation, incorporating additional fans to force air into the oil tank and pipes, thereby amplifying the heat dissipation capability. The forced oil circulation method employs an oil pump to extract heated oil from the transformer, cool it externally, and then seamlessly reintegrate it.
Structure Function
Within the main substation of urban rail transit power systems, the primary transformer typically employs a sophisticated three-phase oil-immersed design. This transformer intricately consists of essential components such as the core, windings, oil tank, voltage regulation apparatus, radiator, oil reservoir, gas relay, insulation bushing, and explosion-proof tubing, among others.
1. Core
The core comprises meticulously stacked silicon steel sheets, renowned for their excellent magnetic conductivity, forming a closed magnetic flux circuit. The primary and secondary windings are expertly wound around this core.
Our core is available in two structures: core type and shell type, with the core type being predominantly used. The core type transformer's structural integrity consists of a core column and a yoke. Specially designed internal oil channels facilitate cooling, promoting efficient oil circulation and significantly enhancing the equipment's heat dissipation.
2. Winding
The winding, often referred to as the coil, serves as the transformative core's conductive circuitry. Crafted by meticulously wrapping either copper or aluminum wire into intricate, multi-layered cylindrical formations, the windings create a harmonious balance. Arranged concentrically around the core's column, the primary and secondary windings are insulated from one another, ensuring optimum performance and safety. Typically, the low-voltage winding nestles on the inside, while the high-voltage winding graces the outer layer. A protective sheath of insulating material envelops each wire, safeguarding against unwanted connections between the wires themselves and between wires and the ground, thereby optimizing both functionality and safety.
3. Oil Tank
The oil tank elegantly encases the oil-immersed transformer, serving as both a reservoir for oil and a structural foundation for additional essential components. [2]
4. Voltage Regulator
Ingeniously engineered, the voltage regulator is designed to maintain the secondary voltage of the transformer at a constant and reliable level. In response to fluctuations in power supply voltage, this regulator deftly adjusts the transformer's tap switch, ensuring stability in the secondary output voltage. The voltage regulator is categorized into two types: the on-load voltage regulator and the off-load voltage regulator, each serving pivotal roles in the seamless operation of the transformer.
5. Radiator
The radiator, strategically affixed to the oil tank wall, plays a vital role in managing and dispersing heat. Through an intricate network of pipes, the radiator is connected to both the upper and lower sections of the oil tank. When discrepancies arise in oil temperature between these sections, the radiator initiates oil convection, ingeniously circulating cooled oil back to the tank. This process effectively moderates the transformer's oil temperature. To amplify the cooling action, various methods such as self-cooling, forced air cooling, and forced water cooling are employed, each contributing to the overall efficiency and longevity of the transformer.
6. Oil Sump
Referred to as the oil tank, the oil sump is an integral component designed to accommodate the natural thermal expansion and contraction of transformer oil due to temperature fluctuations. As oil levels rise and fall, the oil sump acts as a reliable buffer, ensuring a consistently filled oil tank. Moreover, its presence minimizes the exposure of oil to air, thereby slowing down the oxidation process and enhancing the oil's durability and performance.
7. Gas Relay
The gas relay, or gas protection relay, stands as a critical defense mechanism safeguarding against internal transformer faults. Positioned at the midpoint of the connecting pipe between the oil tank and oil sump, this device activates in response to severe internal malfunctions. In dire situations, the gas relay engages the circuit breaker trip path; for less critical issues, it connects the fault signal circuit, providing a comprehensive protective oversight.
8. Insulation Bushing
The high and low insulation bushings, strategically located on the transformer's oil tank top cover, are pivotal for maintaining superior insulation between the high and low voltage winding leads and the oil tank. Typically constructed from porcelain, these bushings ensure reliable insulation and structural stability, effectively securing the leads in place and safeguarding against electrical anomalies.
9. Explosion-proof Tube
The explosion-proof tube, often hailed as the safety air passage, is a critical safety feature affixed to the transformer's oil tank. Its outlet, sealed with a precise glass explosion-proof membrane, acts as a safeguard. In the event of a serious fault within the transformer or a failure of the gas relay, the internal gas pressure will shatter the membrane along the safety air passage, thereby preventing a catastrophic explosion and ensuring the transformer's safe operation.
Our Advantages
1. Experience the pinnacle of insulation performance with our transformer, designed to significantly reduce insulation distances, thereby optimizing costs without compromising quality.
2. Our transformer oil boasts a remarkably low viscosity, delivering exceptional heat transfer capabilities that ensure efficient operation under all conditions.
3. Protect your investment with our transformer, expertly crafted to shield the core and windings against moisture, thus enhancing durability and performance.
4. Elevate the lifespan of your transformer with our protective features, safeguarding insulating paper and paperboard from oxygen exposure, thereby minimizing material aging.
5. Enjoy reduced operational expenses with our low maintenance cost and delight in the serene operation thanks to our low noise technology.
Product Parameters
S11-M(30-2500)/10 Three-Phase Oil-Immersed Distribution Transformer
Rated
capacity(kVA) |
High voltage(kV) |
Tap range |
Low voltage(kV) |
connected group label |
No-load
loss(w) |
Load loss
(75ºC)(W) |
No-load current(%) |
| 30 |
6
6.3
6.6
10
10.5
11 |
±2*2.5
±5 |
0.4 |
Dyn11
Yyn0
Yzn11 |
80 |
630/600 |
1.5 |
| 50 |
100 |
910/870 |
1.3 |
| 63 |
110 |
1090/1040 |
1.2 |
| 80 |
130 |
1310/1250 |
1.2 |
| 100 |
150 |
1580/1500 |
1.1 |
| 125 |
170 |
1890/1800 |
1.1 |
| 160 |
200 |
2310/2200 |
1.0 |
| 200 |
240 |
2730/2600 |
1.0 |
| 250 |
290 |
3200/3050 |
0.9 |
| 315 |
340 |
3830/3650 |
0.9 |
| 400 |
410 |
4520/4300 |
0.8 |
| 500 |
480 |
5410/5150 |
0.8 |
| 630 |
Dyn11
Yyn0 |
570 |
6200 |
0.6 |
| 800 |
700 |
7500 |
0.6 |
| 1000 |
830 |
10300 |
0.6 |
| 1250 |
970 |
12000 |
0.5 |
| 1600 |
1170 |
14500 |
0.5 |
| 2000 |
1550 |
18300 |
0.4 |
| 2500 |
1830 |
21200 |
0.4 |
IMPORTANT NOTICE!
To ensure a seamless order process, please provide the following vital information before placing your order:
1. Type of Prefabricated Substation;
2. Detailed Transformer Model and Capacity Specifications;
3. Comprehensive Primary and Secondary Circuit Main Wiring Scheme;
4. Specifications and Parameters of Electrical Components, especially those with Special Requirements;
5. Preferred Shell Color;
6. List of Names, Quantities, and Any Additional Requirements for Spare Parts and Accessories;
Enjoy peace of mind with our Two-year warranty.
Backed by more than three esteemed certifications.
Benefit from our 15 years of accumulated industry experience.
Packaging & Shipping
Product Recommendation
ABOUT OUR COMPANY
Golden Triangle Electric Power Technology Co., Ltd. (Stock Name: Golden Triangle, Stock Code: 837424), founded in November 2009, stands at the forefront of innovation in premium power products. We are committed to excellence in research, development, production, sales, and technical services. Our extensive portfolio encompasses cutting-edge three-dimensional coil core transformers, state-of-the-art amorphous alloy core transformers, advanced amorphous three-dimensional coil core transformers, high-efficiency photovoltaic substations, versatile energy storage equipment, and sophisticated high and low voltage switchgear. We also provide robust outdoor box substations tailored for various regions. As a leading production and service-oriented enterprise, we excel in EPC construction projects, serving pivotal sectors such as State Grid, Southern Power Grid, railways, mining operations, infrastructure projects, metallurgy, transportation networks, and real estate management systems.
Golden Triangle has distinguished itself by securing a suite of prestigious certifications, including ISO9001:2015 for quality management, ISO14001:2015 for environmental management, ISO45001:2008 for occupational health and safety, PCCC energy-saving product certification, the mandatory national 'CCC' certification, CQC China quality certification, and an esteemed AAA credit rating. We proudly hold the title of a national high-tech enterprise and rank among the top 100 provincial scientific and technological enterprises with significant growth potential. We also boast the municipal green factory title and have established academician and doctor innovation workstations. Our innovation-driven approach is highlighted by 3 invention patents and 51 utility model patents, a testament to our dedication to cutting-edge solutions and quality.
Golden Triangle's innovative products are prominently featured in the 'Energy Saving and People Benefiting Project' and the 'Recommended Catalog of Energy Saving Electromechanical Equipment' sanctioned by the Ministry of Industry and Information Technology, Ministry of Finance, and National Development and Reform Commission. We are trailblazers in Wenzhou's power industry, being the first to receive direct sales subsidies from the Ministry of Finance. Our groundbreaking products, such as the 'SCB13-RL solid triangle ironcore dry-type transformer' and 'SBH16-RL solid triangle rolled iron core amorphous transformer,' set the 'Zhejiang manufacturing quality standard.' We have spearheaded the formulation of 10 pivotal standards, including 'GB/T32825-2016' and 'NB/T 10483-2020,' playing a crucial role in advancing China's energy conservation, emission reduction, and green energy technology.
THE HONOR OF COMPANY
In the dynamic landscape of intense market competition and rapid technological evolution, Golden Triangle remains unwavering in its commitment to superior quality. Upholding the principle that 'quality is the enterprise's life,' we rigorously implement the ISO9001:2000 international quality management system, ensuring our steadfast dedication to 'quality excellence, service perfection, product integrity, and continuous quality improvement.' This commitment guarantees unparalleled customer satisfaction. Our esteemed inclusion in the 'energy-saving and Huimin engineering energy-efficient distribution transformer' project by the National Development and Reform Commission, Ministry of Finance, and Ministry of Industry and Information underscores our pivotal role in pioneering energy-efficient solutions.
The exhibition we attended
A captivating collection of photographs depicting our esteemed company, Golden Triangle Electric Power Technology Co., Ltd., and our state-of-the-art production processes. These images not only reflect our commitment to excellence but also highlight the precision and quality embedded in our High Efficiency Oil Transformer with Low Losses, Custom Made Design.
- Q: Are you manufacturer?
A: Yes, we are manufacturer. Our factory is in Wenzhou China
- Q: Can I get guarantee of products?
A: Yes, every product is 1 year quality warrantee under customer correct using the products.
- Q: Do you have any Certificate?
A: Yes. Each of our unit has CCC, ISO9001 certificate. All the electric parts with CE certificate, If you need any other Certificate, we can help you to get it.
- Q: How to buy it? What about the delivery?
A: Please contact me by email or online, let me know your situation, I will give you professional solution. We have shipping agent can choosing the cheapest and fastest delivery. FOB, CIF, C&F or EXW are no problem for us.
- Q: What's the payment terms?
A: For small testing orders, we can accept Waster union, T/T and Credit card.
For mass orders, we accept t/t and L/C.
- Q: What about the production?
A: Produce time is 4~6weeks.
- Q: Could you offer some spare parts?
A: Yes, no problem.
- Q: What about the maintenance?
A: All the goods past the test, maintenance is very easy.
The company adheres to the quality policy of "quality first, honestservice, strict management, and striving for perfection", and gives back tothe majority of users with first-class technology, first-class quality, and first-class service. We warmly welcome people from all walks of life to visit us forguidance and negotiation, to seek common development, to jointly build a'win-win" and to create a better future with you !
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