Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a remarkable creation by Zhejiang Chaotai Complete Equipment Co., Ltd., the fully sealed oil-immersed power transformer offers an exceptional blend of low loss, minimal noise, and unmatched efficiency. This marvel of engineering not only ensures significant energy savings but also contributes to a greener planet by reducing pollution. Unlike traditional oil-immersed transformers, our innovative design eliminates the need for an oil conservator. The dynamic oil volume is gracefully adjusted by the resilient corrugated oil tank, ensuring the system remains airtight, thereby preserving the quality of the oil and significantly curtailing insulation aging. This innovation elevates operational reliability and virtually negates the necessity for routine maintenance during standard operations.
1. Power Capacity: 25-2500KVA, with flexible voltage levels accommodating 24KV, 30KV, 33KV, 35KV, 36KV, and customizable per customer requirements. 2. Voltage Level options: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Voltage Regulation Type: Available in both Off-circuit and On-load configurations.
4. Tapping Range: Versatile range options of ±5%, 2x2.5%, and ±4x2.5%.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Available in both Three-phase and Single-phase configurations to suit diverse application needs.
7. Connection Symbol: Configurable as Dyn11 or Yyn0, with additional custom options available on request.
8. Short-circuit Impedance: Adheres to Standard Impedance specifications.
9. Altitude: Designed for optimal performance below 1000m. Ambient temperature compatibility: Not exceeding 40°C. If conditions vary, parameter modulation is available.
in accordance with standard specifications.
Power Capacity: A robust range from 25-2500KVA, ensuring reliability and adaptability for various demands.
Voltage Flexibility: Accommodates a spectrum of levels such as 10KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV, ensuring seamless integration into different systems.
Voltage Level:
Voltage Regulation Type: Choose between Off-circuit or On-load to meet specific operational needs.
Tapping Range: Provides flexibility with options of ±5%, ±2x2.5%, and ±4x2.5%.
Frequency: Tailored to work efficiently with both 50Hz and 60Hz systems.
Phases: Available as both Three-phase and Single-phase, catering to diverse requirements.
Connection Symbol: Options include Dyn11 and Yyn0, with tailor-made solutions on request.
Short-circuit Impedance: Conforms to Standard Impedance for assured performance.
Altitude and Temperature: Engineered for heights below 1000m and temperatures not exceeding 40°C.
For conditions beyond these limits, we are committed to adjusting parameters to maintain compliance with industry standards.
The fully sealed oil-immersed power transformer, a stellar innovation by Chaotai Power, boasts low loss and noise with unparalleled efficiency. It delivers substantial energy savings and minimizes environmental impact.
In comparison to the usual oil-immersed variants, this advanced fully sealed model removes the oil conservator and dynamically adjusts oil volume via its corrugated oil tank's elasticity. This design prevents air exposure, thereby safeguarding oil quality and slowing insulation deterioration, leading to heightened reliability and practically eliminating the need for routine 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. is a prestigious high-tech enterprise at the forefront of electrical integration. With a dedicated team bringing over 15 years of rich industry expertise, we excel in R&D, production, and superior customer service.
We offer an extensive range of products, including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and advanced substations. Our cutting-edge solutions are indispensable across a multitude of fields such as energy and chemical sectors, metal smelting, power grids, industrial manufacturing, academic institutions, healthcare, municipal commerce, water management, hydropower, transportation infrastructure, and both commercial and residential developments.
Our philosophy is rooted in relentless technological innovation and the paradigm of "smart manufacturing." We are committed to attracting top-tier technical talents to significantly bolster our core competencies. Our mission is to offer unparalleled value to our clients while forging the most esteemed brand in our sector. From humble beginnings to excellence, our journey is marked by continuous advancement. We champion innovation and adhere to a contemporary business model driven by quality, market focus, reputation, and efficient management. Our ethos is built on technological leadership, standardized management, uncompromising quality, and customer delight, which fortify our market competitiveness. We aspire to serve China's electric power and grid sectors with unmatched speed, strength, and ambition. Our core principles emphasize integrity, quality, exceptional service, and perpetual customer satisfaction. We are dedicated to excellence, fostering innovation, and establishing a brand synonymous with trust. Your appreciation fuels our progress. We extend heartfelt gratitude to our loyal customers and eagerly anticipate collaborating with you to shape an even brighter future.
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.