Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil-immersed power transformer, crafted with precision by Chaotai Power, delivers exceptional benefits such as low loss, minimal noise, and superior efficiency. This innovation is an energy-saving marvel, significantly reducing pollution. Unlike conventional oil-immersed transformers, this fully sealed marvel eliminates the need for an oil conservator. Its state-of-the-art design allows for automatic adjustment and compensation of oil volume through the flexible corrugated sheet of the oil tank, ensuring isolation from air. This unique feature prevents and decelerates oil deterioration and insulation aging, enhancing operational reliability and eliminating the necessity for maintenance during standard operations.
1. Power Capacity: Ranging from 25-2500KVA, available in 24KV, 30KV, 33KV, 35KV, 36KV and customizable according to customer requirements. 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit and On-load.
4. Tapping Range: Options of ±5%, 2x2.5%, and ±4x2.5%.
5. Frequency: Available in both 50Hz and 60Hz.
6. Phases: Options include Three-phase or Single-phase systems.
7. Connection Symbol: Choose from Dyn11, Yyn0, or as specifically requested.
8. Short-circuit Impedance: Standard Impedance applies.
9. Altitude: Suitable for altitudes not exceeding 1000m, with an ambient temperature ceiling of 40°C. If these conditions are unmet, adjustments will be made.
Parameters will be modulated in accordance with the prevailing standards.
Power Capacity: Available from 25 to 2500KVA.
Voltage Level: Spanning 10KV to 36KV with various voltage configurations.
Voltage Level:
Type of Voltage Regulation: Options for Off-circuit or On-load available.
Tapping Range: Variable options of ±5%, ±2x2.5%, and ±4x2.5%.
Frequency: Offered in both 50Hz and 60Hz formats.
Phases: Configurable in Three-phase or Single-phase.
Connection Symbol: Available in Dyn11, Yyn0, or as customized.
Short-circuit Impedance: Adheres to Standard Impedance.
Altitude and Temperature: Capable of operating at altitudes up to 1000m and temperatures up to 40°C.
Should environmental conditions differ, parameters will be adjusted according to standards.
The fully sealed oil-immersed power transformer from Chaotai Power is engineered for outstanding performance with low loss, quiet operation, and high efficiency, making it a leader in energy conservation and pollution reduction.
Distinguished from ordinary oil-immersed transformers, this fully sealed version eliminates the need for an oil conservator. It automatically adjusts oil volume using the corrugated sheet's elasticity in its tank, ensuring an air-isolated environment. This design feature prevents oil deterioration and insulation aging, boosting reliability and negating standard operational 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 out as a pioneering high-tech enterprise specializing in electrical integration. With an experienced and dedicated R&D, production, and service team, we bring over 15 years of industry expertise to the forefront.
Our diverse product lineup includes high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and comprehensive substation solutions. These cutting-edge products are extensively utilized across a wide array of sectors, including energy and chemical industries, metal smelting, electric power grids, industrial manufacturing, educational and research institutions, medical and pharmaceutical sectors, municipal commerce, water conservancy and hydropower, road traffic infrastructures, as well as both commercial and residential areas.
Driven by a commitment to technological innovation and the philosophy of 'smart manufacturing', we are aggressively recruiting high-caliber technical experts to significantly bolster our core competencies. Our mission is to deliver unparalleled value to our customers while aspiring to establish the premier brand in our industry. Since inception, our company has demonstrated remarkable progress, evolving from inception to excellence. We remain steadfast in our pursuit of innovation, adhering to a modern business ethos driven by quality excellence, market orientation, reputation-driven growth, and management-driven efficiency. Our dedication to 'technology leadership, standardized management, superior quality, and customer satisfaction' in quality and talent management enhances our market competitiveness as we aim to lead in China's power transmission and distribution domains, setting ambitious benchmarks for speed, strength, and elevation. Guided by principles where integrity is foundational, quality is supreme, service is unparalleled, and customer satisfaction is perpetual, we aim for continuous excellence and innovation, fostering a brand that is synonymous with trust. Your support fuels our journey. We extend our heartfelt gratitude to both new and loyal patrons for their invaluable support and trust. At Senhang Technology, we eagerly anticipate a collaborative journey towards a brighter future, hand in hand with you.
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.