Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil-immersed power transformer, engineered and crafted by Zhejiang Chaotai Complete Equipment Co., Ltd., stands out with its superior features: low loss, minimal noise, and exceptional efficiency. These characteristics collectively deliver outstanding energy savings and significantly reduce environmental impact. Unlike traditional oil-immersed transformers, this advanced model eliminates the need for an oil conservator. The oil volume variations are seamlessly managed through the flexibility of the corrugated oil tank's sheet, maintaining an airtight seal. This design innovation not only prevents and decelerates oil degradation and insulation aging but also bolsters operational reliability, all while ensuring maintenance-free performance under standard conditions.
1. Power Capacity: 25-2500KVA, 24KV, 30KV, 33KV, 35KV, 36KV, and customizable as per customer specifications 2. Voltage Level: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Off-circuit or On-load
4. Tapping Range: ±5%, ±2x2.5%, ±4x2.5%
5. Frequency: 50Hz or 60Hz
6. Phases: Three or Single
7. Connection Symbol: Dyn11, Yyn0 (or as requested)
8. Short-Circuit Impedance: Standard Impedance
Altitude is not exceeding 1000m, ambient temperature not exceeding 40°C. If these conditions are unmet, parameters will be adjusted accordingly.
Specifications can be modified to align with standards.
Power Capacity: 25-2500KVA
Voltage Levels: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level:
Type of Voltage Regulation: Off-circuit or On-load
Tapping Range: ±5%, ±2x2.5%, ±4x2.5%
Frequency: 50Hz or 60Hz
Phases: Three or Single
Connection Symbol: Dyn11, Yyn0 (or as requested)
Short-Circuit Impedance: Standard Impedance
Altitude is not exceeding 1000m, ambient temperature not exceeding 40°C
If these conditions cannot be met, we will adjust parameters in accordance with standards.
The fully sealed oil-immersed power transformer from Chaotai Power is a marvel of efficiency, significantly lowering energy consumption and noise pollution.
This groundbreaking transformer design eradicates the oil conservator, with oil volume changes adeptly managed by the corrugated oil tank's elasticity. This construction ensures the transformer remains air-isolated, thereby delaying oil and insulation degradation, enhancing operational dependability, and negating the need for regular 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 at the forefront of innovation as a high-tech powerhouse in electrical integration. With an expert team boasting over 15 years of industry prowess, we are dedicated to elevating the standards of R&D, production, and service.
Our expansive product line features cutting-edge high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, sophisticated gas-insulated switchgear, and robust substations. Our solutions empower diverse sectors including the dynamic energy and chemical industries, the resilient metal smelting sector, crucial electric power grids, and the innovative industrial manufacturing landscape. We also cater to academia, the forward-thinking medical and pharmaceutical fields, municipal commerce, water conservancy, hydropower initiatives, road traffic systems, and both commercial and residential areas.
By embracing the spirit of technological innovation and adopting a 'smart manufacturing' philosophy, we actively recruit top-tier technical talent to amplify our core competitive edge. Our mission is to provide invaluable services and establish the industry's premier brand. Since our inception, we've charted a remarkable journey from humble beginnings to industry excellence. We champion innovation, focusing on quality for survival, market-driven strategies, reputational development, and management-driven efficiency. Our commitment to 'technology leadership, standardized management, superior quality, and customer delight' drives our quality and talent management strategies. We enhance our market strength with aspirations to serve China's power transmission and distribution sectors with unmatched speed, strength, and ambition. Integrity is our foundation, quality is our priority, service is our hallmark, and customer satisfaction is our perpetual pursuit. Excellence, innovation, and brand trustworthiness are our steadfast goals. Your recognition fuels our passion. We deeply appreciate the support from new and long-standing patrons, as we, alongside Senhang Technology, aim to forge a brighter future together.
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.