Introducing the oil-immersed transformer, a cutting-edge marvel of engineering that embodies a superior, rational structure and enhanced operational capabilities. This innovative transformer harnesses the power of oil both as its chief insulation and cooling medium, enabling versatile cooling methods such as self-cooling, air-cooling, water-cooling, and forced oil circulation. The meticulously designed components, including the iron core, windings, and oil tank, are complemented by an oil reservoir, respirator, explosion-proof tube, and heat sink. Further enhancing its functionality are key elements like the insulation bushing, tap changer, gas relay, thermometer, and oil purifier.
Due to the enduring immersion of the silicon steel sheets within the transformer, oil infiltration into the interlayers is inevitable, offering elasticity that serves as an excellent buffer. Consequently, the oil-immersed transformer is distinguished by its remarkably low noise. Despite this, the internal placement of the voltage regulating switch in the oil tank means the switch's contact state remains concealed during voltage adjustments. A poor contact would mimic a circuit disconnection scenario. Poor contact can result in switch burnout, particularly under excessive load conditions.
Transformer normal service conditions
1. The installation elevation must remain below 1000 meters;
2. Maximum air temperature must not exceed +40ºC;
3. The highest daily average air temperature should be +30ºC;
4. The annual average air temperature is ideally +20ºC;
5. Lowest permissible outdoor air temperature is -25ºC.
(specific details are outlined for transformers operational under unique conditions)
Type of cooling
(1) Oil-immersed transformers generally operate with one of three sophisticated cooling methodologies: oil-immersed self-cooling, oil-immersed air-cooling, and forced oil circulation.
The self-cooling method relies on the natural convection process of oil to efficiently dissipate heat.
(2). The air-cooling method advances the self-cooling technique by incorporating fans that actively channel air into the oil tank and pipes, significantly enhancing heat dissipation. Forced oil circulation employs an oil pump to draw hot oil from the transformer, cool it externally, and then reintroduce it into the system.
Structure Function
In the urban rail transit power supply system's main substations, the three-phase oil-immersed transformer is predominantly used. This transformer setup comprises a core, windings, oil tank, voltage regulating device, radiator, oil reservoir, gas relay, insulation bushing, and explosion-proof tube, each serving a pivotal role.
1. Core
Crafted from stacked silicon steel sheets with superior magnetic conductivity, the core creates a closed magnetic flux circuit, around which the primary and secondary windings are skillfully wound.
Transformer cores are categorized into two main structures: core type and shell type, with the core type being more prevalent. The core of this transformer features columns and a yoke, and is ingeniously designed with internal oil channels that facilitate cooling and enhance overall heat dissipation.
2. Winding
The winding, also referred to as the coil, serves as the heart of the transformer's conductive circuit. Crafted meticulously by coiling copper or aluminum wire into multi-layered cylindrical forms, these windings are a testament to precision engineering. Arranged concentrically on the core column, the primary and secondary windings maintain a carefully calibrated distance, insulated from each other to ensure impeccable functionality. Typically, the low-voltage winding nestles within, while the high-voltage one envelops it from the outside. Encased in insulating material, this setup guarantees unmatched insulation, both between individual wires and from the ground itself.
3. Oil Tank
The oil tank is not just a container; it's the protective shell of the oil-immersed transformer. Beyond its primary role of holding oil, this tank is ingeniously designed to accommodate a myriad of other essential components, making it a crucial part of the transformer's architecture.
4. Voltage Regulator
The voltage regulator is adeptly engineered to maintain the secondary voltage of the transformer at consistent levels. In response to any fluctuations in the power supply voltage, the regulator steps in, adjusting the transformer's tap switch to align with the desired stability of the secondary output voltage. This sophisticated apparatus is available in two variants: the on-load voltage regulator and the off-load voltage regulator, each offering tailored solutions for stability.
5. Radiator
Ingeniously placed on the oil tank's wall, the radiator is a pivotal element in the transformer's cooling system. Through strategically connected upper and lower pipes, it employs the principle of oil convection to facilitate a seamless flow of cooled oil back into the tank, effectively lowering the transformer's temperature. For enhanced cooling efficiency, options such as self-cooling, forced air cooling, and forced water cooling can be integrated, ensuring optimal performance under diverse conditions.
6. Oil Sump
The oil sump, also recognized as the oil tank, plays a vital role in accommodating the thermal dynamics of transformer oil, as it expands and contracts with temperature changes. By providing a buffer zone, it ensures the oil tank remains consistently full, while its design minimizes the air-oil interface, thus decelerating the oxidation process of the oil.
7. Gas Relay
Also known as the gas protection relay, the gas relay is the primary defense against internal transformer faults. Strategically positioned in the conduit between the oil tank and oil sump, this device springs into action during critical malfunctions, linking the circuit breaker trip path. In less severe fault scenarios, it activates the fault signal circuit, safeguarding the transformer's integrity.
8. Insulation Bushing
Strategically mounted on the top cover of the transformer oil tank, the high and low insulation bushings, typically crafted from porcelain, play a crucial role for oil-immersed transformers. Their primary function is to ensure flawless insulation between the high and low voltage winding leads and the oil tank while providing secure lead fixation.
9. Explosion-proof Tube
The explosion-proof tube, or safety air passage, is a critical safety feature affixed to the transformer's oil tank. Equipped with a glass explosion-proof membrane at its outlet, it acts as a fail-safe mechanism. In the event of a severe internal fault where the gas relay fails, this tube ensures that the gas pressure is released safely by breaching the glass membrane, thereby averting a potential transformer explosion.
Our Advantages
1. Experience exceptional insulation performance with our product, designed to minimize insulation distances, effectively reducing overall costs while maintaining superior efficiency.
2. Our transformer oil boasts a low viscosity and outstanding heat transfer capabilities, ensuring optimal performance and reliability.
3. Designed to safeguard the core and windings, our product is highly effective in protecting against moisture ingress from the ambient air, maintaining integrity and performance.
4. Our advanced design protects insulating paper and paperboard from oxygen exposure, significantly slowing down material aging and dramatically extending the transformer's lifespan.
5. Benefit from reduced maintenance costs and enjoy a remarkably quiet operation with our low-noise, cutting-edge 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!
We kindly request that you provide the following vital information before placing an order. This essential data includes:
1. The specific type of Prefabricated Substation you require;
2. Detailed Transformer Model and Capacity Specifications;
3. The Primary and Secondary Circuit Main Wiring Scheme that you wish to implement;
4. Comprehensive Specifications and Parameters of Electrical Components with any Special Requirements;
5. Your preferred Shell Color choice;
6. List of Names, Quantities, and Any Additional Requirements for Spare Parts and Accessories;
Benefit from our robust two-year warranty
Backed by more than three prestigious certifications
Leverage our 15 years of accumulated industry experience
Packaging & Shipping
Product Recommendation
ABOUT OUR COMPANY
Founded in November 2009, Golden Triangle Power Technology Co., Ltd. (stock name: Golden Triangle, stock code: 837424) stands as a beacon of excellence in the realm of premium power products. With an unwavering commitment to innovation and quality, we specialize in the research, development, production, sales, and technical services of a wide array of products. Our extensive catalog includes cutting-edge three-dimensional coil core transformers, state-of-the-art amorphous alloy core transformers, advanced amorphous three-dimensional coil core transformers, and dynamic photovoltaic substations. Additionally, our product offerings extend to energy storage equipment, versatile high and low voltage switchgear, and adaptable outdoor box substations, tailored to meet the diverse needs of various regions. As a forward-thinking production and service-oriented enterprise, we excel in EPC construction projects, ensuring unparalleled service across critical sectors. Our products empower key industries such as the State Grid, Southern Power Grid, railways, mines, infrastructure, metallurgy, roads and bridges, and real estate management systems.
Golden Triangle is synonymous with quality and trust, having garnered an impressive lineup of esteemed certifications. Our credentials include ISO9001:2015 for quality management, ISO14001:2015 for environmental management, ISO45001:2008 for occupational health and safety, PCCC energy-saving product certification, the national 'CCC' mandatory product certification, CQC China quality certification, and an AAA credit rating. Celebrated as a national high-tech enterprise, we rank among the top 100 provincial scientific and technological enterprises with significant growth potential. Our accolades extend to the municipal green factory title, complemented by our academician and doctor innovation workstations. With 3 invention patents and an impressive 51 utility model patents, our dedication to innovation and uncompromising quality is unmistakable.
Golden Triangle is a distinguished contributor to the 'Energy Saving and People Benefiting Project' and the 'Recommended Catalog of Energy Saving Electromechanical Equipment,' endorsed by the Ministry of Industry and Information Technology, Ministry of Finance, and National Development and Reform Commission. Proudly leading the charge as the first power industry enterprise in Wenzhou to receive direct subsidies from the Ministry of Finance for product sales, our offerings have been celebrated as national industrial energy-saving technical equipment products and as pioneering products in provincial equipment manufacturing key fields. Our flagship products, the 'SCB13-RL solid triangle ironcore dry-type transformer' and the 'SBH16-RL solid triangle rolled iron core amorphous transformer,' exemplify the 'Zhejiang manufacturing quality standard.' As trailblazers, we spearheaded the drafting of 10 pivotal standards, including 'GB/T32825-2016' and 'NB/T 10483-2020,' playing a pivotal role in advancing China's energy conservation, emission reduction, and green energy technology.
THE HONOR OF COMPANY
In a landscape defined by fierce market dynamics and rapid technological evolution, Golden Triangle's unwavering dedication to quality remains our cornerstone. Guided by the philosophy that 'quality is the enterprise's life,' we rigorously implement the ISO9001:2000 international quality management system. This steadfast commitment ensures our relentless pursuit of 'quality excellence, service perfection, product integrity, and continuous quality improvement.' As a consequence, we achieve unparalleled customer satisfaction. Our esteemed inclusion in the 'energy-saving and Huimin engineering energy-efficient distribution transformer' project, championed by the National Development and Reform Commission, Ministry of Finance, and Ministry of Industry and Information, stands as a testament to our resolve.
The exhibition we attended
Explore several captivating pictures that offer a glimpse into the world of Golden Triangle Electric Power Technology Co., Ltd. Witness the meticulous craftsmanship and advanced production methods that define our brand. From the intricate assembly of our Low Losses and High Efficiency Oil Transformer to the vibrant spirit of our workforce, these images capture the essence of our dedication to excellence and innovation.
- 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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