Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil immersed power transformer, a masterpiece by Chaotai Power, stands out with its remarkable benefits of low loss, minimal noise, and exceptional efficiency. This transformer is a beacon of energy conservation, effectively reducing pollution. Unlike conventional oil immersed transformers, our fully sealed model eliminates the need for an oil conservator. The oil volume adjusts automatically, thanks to the corrugated sheet's elasticity in the oil tank, maintaining a seamless transformation process. The transformer is hermetically sealed from the outside air, dramatically slowing oil deterioration and insulation aging, ensuring higher operational reliability and negating the need for regular maintenance.
1. Power Capacity: Ranging from 25 to 2500KVA, with voltage options of 24KV, 30KV, 33KV, 35KV, 36KV, and customizable solutions to meet unique customer requirements. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV.
4. Tapping Range: ±5% with dual ±2.5% adjustments and quad ±4x2.5% fine-tuning.
5. Frequency: Choice between 50Hz or 60Hz to suit your power supply needs.
6. Phases: Offered in both three-phase and single-phase configurations.
7. Connection Symbol: Configurations available as Dyn11, Yyn0 (or tailored as requested).
8. Short-circuit Impedance: Adheres to standard impedance protocols.
9. Altitude restrictions: Ensures optimal performance at altitudes not exceeding 1000m and ambient temperatures within 40°C.
In scenarios where conditions deviate, we will adjust parameters in strict accordance with industry standards.
Power Capacity: From 25-2500KVA, designed to meet extensive energy demands.
Voltage Options: Available in diverse ranges, including 10KY, 11KV, 20KY, 22KV, 30KV, 33KV, 35KV, and 36KV to suit diverse requirements.
Voltage Level:
Type of Voltage Regulation: Options include off-circuit or on-load regulation for versatile applications.
Tapping Range: Comprehensive adjustments from ±5% to ±2x2.5% and ±4x2.5% for precise control.
Frequency: Available in both 50Hz and 60Hz to match varied electrical standards.
Phases: Choose between three-phase or single-phase systems to fit your infrastructure.
Connection Symbol: Standard configurations include Dyn11, Yyn0, with custom adjustments available as per request.
Short-circuit Impedance: Conforms to industry-leading impedance standards for reliability.
Environmental Constraints: Designed to operate seamlessly at altitudes up to 1000m, with ambient temperature not surpassing 40°C.
For any deviation from operational conditions, parameter adjustments will be handled per standard regulations.
The fully sealed oil immersed power transformer by Chaotai Power is engineered for low loss, reduced noise, and maximal efficiency, optimizing energy savings and minimizing pollution.
In contrast to standard oil immersed transformers, our fully sealed variant removes the oil conservator. This ensures oil volume changes are self-adjusted via the corrugated sheet's flexibility within the oil tank. This isolation from air significantly minimizes oil degradation and insulation wear, boosting operational dependability and eliminating the need for maintenance under normal conditions.
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 high-tech advancement in the realm of electrical integration. With a robust team dedicated passionately to R&D, production, and service, our expertise is fortified by over 15 years of distinguished industry experience. We are not just a company; we are a fusion of innovation and dedication.
Our elite range of products includes high-voltage solid-state soft starters, capacitor cabinets, sophisticated high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and comprehensive substations. Our innovations are the backbone of diverse sectors: energy, chemical industries, metal smelting, power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, road infrastructure, and both commercial and residential developments.
Embracing a development philosophy of 'smart manufacturing,' we firmly hold technological innovation at our core. By attracting top-tier technical talent, we enhance our core competitiveness and offer unparalleled value to our customers, aspiring to pioneer the industry's premier brand. Our journey is marked by transformation—from inception to excellence—driven by innovation. We thrive on quality, pursue market leadership through reputation, and seek efficiency through robust management. Our commitment is steadfast: guided by technology, managed to perfection, committed to superior quality, and devoted to customer satisfaction. We aim to elevate China's electric power and grid sectors with unmatched speed, strength, and ambition. Integrity is our foundation; quality is our priority; supreme service and absolute customer satisfaction are our eternal commitments. Our relentless pursuit of excellence and innovation fuels our mission to build an esteemed brand. Your trust and recognition propel us forward. We extend heartfelt gratitude to our loyal patrons and eagerly anticipate co-creating a brighter future with Senhang Technology.
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.