Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series power transformer, fully sealed and oil-immersed, crafted with precision by Zhejiang Chaotai Complete Equipment Co., Ltd. This extraordinary transformer is celebrated for its exceptionally low energy loss, ultra-quiet functionality, and superior efficiency. It epitomizes energy conservation and significantly reduces environmental impact, setting a new benchmark. Uniquely designed, it foregoes the traditional oil conservator, leveraging the innovative elasticity of its corrugated oil tank to autonomously adjust for oil volume changes, thus maintaining an impeccable seal that protects against air exposure. This key feature prevents oil degradation, extends the lifespan of insulation, and markedly enhances operational reliability, all while negating the need for routine maintenance during standard usage.
1. Power Capacity: Spanning from 25-2500KVA, with customizable options for 24KV, 30KV, 33KV, 35KV, 36KV, tailored to specific customer requirements 2. Voltage Level: Offered in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Both Off-circuit and On-load options are available to suit diverse needs
4. Tapping Range: Available options include ±5%, 2x2.5%, ±4x2.5% for precise control
5. Frequency: Selectable options of either 50Hz or 60Hz to cater to different regional requirements
6. Phases: Offered in versatile Three-phase or single-phase configurations
7. Connection Symbol: Dyn11, Yyn0, with full customization available to meet your exact specifications
8. Short-circuit Impedance: Comes equipped with Standard Impedance for reliable performance
9. Operational Conditions: Engineered for altitudes up to 1000m and ambient temperatures below 40°C. Should these parameters be exceeded, we provide necessary adjustments in compliance with industry standards.
All amendments will strictly follow industry protocols.
Power Capacity: Extending between 25-2500KVA
Voltage Levels: Options include 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV for varied applications
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load configurations for optimal flexibility
Tapping Range: Select from options such as ±5%, ±2x2.5%, ±4x2.5% for tailored voltage control
Frequency Options: Choose between 50Hz or 60Hz to align with local standards
Phases: Configurable in either Three-phase or single-phase to suit various requirements
Connection Symbol: Dyn11, Yyn0, customizable upon request for specific applications
Short-circuit Impedance: Features standard impedance for dependable operation
Operational Conditions: Ideal for altitudes up to 1000m, with ambient temperatures not exceeding 40°C
Should conditions deviate from standard, we will implement necessary parameter adjustments, adhering to established guidelines.
The fully sealed oil-immersed power transformer by Chaotai Power stands as an innovation in energy efficiency, boasting low energy loss, silent operation, and superior performance. It is a pinnacle of energy-saving technology with a profound impact on reducing pollution.
In stark contrast to traditional models, this advanced fully sealed transformer eliminates the need for an oil conservator. It smartly adapts to oil volume changes using the elastic properties of its corrugated oil tank sheet, ensuring airtight insulation. This vital feature prevents oil deterioration, slows insulation aging, and significantly boosts reliability, all while eradicating the need for frequent maintenance.
Product Parameters
Oil immersed transformer product parameters |
Rated capacity kVA |
Voltage combination |
NO-load loss W |
Load loss W |
No-load current% |
Short-circuit |
HV (KV ) |
HV tapping range |
LV (KV) |
Connection symbol |
Impedance |
30 |
6.3kV
10.5kV
11kV
13.2kV
13.8kV
15kV |
±2
× 2.5%;
Or ±5% |
0.4 |
Dyn11 or Yyn0 |
90 |
660 |
2.1 |
5.5 |
50 |
130 |
960 |
2 |
63 |
150 |
1145 |
1.9 |
80 |
180 |
1370 |
1.8 |
100 |
200 |
1650 |
1.6 |
125 |
240 |
1980 |
1.5 |
160 |
290 |
2420 |
1.4 |
200 |
330 |
2860 |
1.3 |
250 |
400 |
3350 |
1.2 |
315 |
480 |
4010 |
1.1 |
400 |
570 |
4730 |
1 |
500 |
680 |
5660 |
1 |
630 |
810 |
6820 |
0.9 |
6 |
800 |
980 |
8250 |
0.8 |
1000 |
1150 |
11300 |
0.7 |
1250 |
1350 |
13200 |
0.7 |
1600 |
1630 |
15950 |
0.6 |
2000 |
1950 |
19140 |
0.6 |
2500 |
2340 |
22200 |
0.6 |
Main product
Company Profile

Zhejiang ChaoTai Complete Equipment Co., Ltd. stands as a beacon of technological brilliance in the evolving domain of electrical integration. As a distinguished high-tech enterprise, we are fueled by a passionate and expert R&D, production, and service team, enriched by a remarkable 15-year legacy of industry prowess. Our steadfast dedication to achieving exceptional excellence sets us apart as pioneers in innovation.
Our extensive and diverse product portfolio is a testament to cutting-edge innovation, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These outstanding products are indispensable across a myriad of sectors such as energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic, proving their worth in both commercial and residential settings. We are immensely proud to be at the forefront of empowering the future with our transformative solutions.
Guided by a philosophy of relentless technological progress and 'smart manufacturing,' we are passionately devoted to fostering a culture of exemplary excellence through the integration of elite technical talents. This strategic focus amplifies our core capabilities, ensuring we deliver unparalleled service value to our clients consistently. Our extraordinary growth journey is a testament to our ethos: evolving from inception to industry leadership through unwavering perseverance. Our business strategy is deeply rooted in innovation, with a steadfast dedication to quality as the cornerstone of our survival, market reputation as the gateway to development, and management efficiency as the engine of profitability. We are committed to leveraging 'technology as the compass, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management initiatives. Our strategic vision is to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that soar to new heights. Integrity, unparalleled quality, exceptional service, and customer satisfaction are the core of our values. We relentlessly pursue excellence, continuously innovating to establish a brand synonymous with trust. The appreciation of our customers fuels our ambition. We extend our heartfelt gratitude to our loyal customers, both new and longstanding, and warmly invite you to join us on a shared journey with Senhang Technology towards a luminous tomorrow.
Our Advantages
Certifications
After Sales Service


FAQ
Q1. Are you a factory or trading company?
A.We are a factory.
Q2. Where is your factory located? How can I visit there?
A. Our factory is located in Wenzhou City, Zhejiang Province, China. You can fly to Longwan airport directly. All our clients,from home or abroad, are warmly welcome to visit us!
Q3. What's the payment term?
A. We accept TT. 30% deposit and 70% before shipment, Western Union, L/C At Sight is ok! We'll l show you the photos of the products and packages before you pay the balance.
Q4. Tell me the standard of package? What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons, If vou have leaallyl registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q5. Would you accept to use our logo?
A. If you have good quantity,it absolute no problem to do OEM.
Q6. How about the transport?
A. If the number of aoods is small we usually use TNT.DHL.FEDEX.EMS and some express voull offered. If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.
Q7. What is your Production lead time /delivery time?
A: Generally, it will take 25 to 30 days after receivina vour advance payment.
The specificl delivery time depends on the items and the quantity of your order. Silicone rubber's reqular product is 1,000/ week, Porcelain's need 2-3 weeks about 1000 pcs.
Q8. How do you make our business long-term and good relationship?
A:l. We keep aood auality and competitive price to ensure our customers benefit:
A: 2. We respect every customer as our friend and we sincerely do business and make friendsl with them, no matter where they come from.
A: 3.Most goods we have the type report according the IEC STANDARD
Q9. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the courier cost.
Q10. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q11. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q12.What certificates do you have?
A:ISO9001,OHSAS18001,ISO14001 certificate and Type test report of product.