Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a state-of-the-art fully sealed oil-immersed power transformer crafted by Chaotai Power. This innovative transformer boasts remarkable features such as reduced energy loss, minimal noise, and superior efficiency, delivering an impressive energy-saving performance while curbing pollution. Unlike traditional oil-immersed transformers, our fully sealed design eliminates the need for an oil conservator. The oil volume's fluctuations are seamlessly managed by the flexible corrugated oil tank, ensuring the system remains isolated from air exposure. This advanced design not only inhibits oil degradation and insulation aging but also significantly boosts operational reliability, virtually eliminating the requirement for maintenance during standard operation.
1. Power Capacity: Ranging from 25 to 2500KVA with options for 24KV, 30KV, 33KV, 35KV, 36KV, and other customized requirements. 2. Voltage Level: Available at 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Configurable as Off-circuit or On-load, tailored to your needs.
4. Tapping Range: Expertly engineered with ±5%, ±2x2.5%, and ±4x2.5% options.
5. Frequency: Designed to operate seamlessly at either 50Hz or 60Hz.
6. Phases: Flexible offerings of either three-phase or single-phase configurations.
7. Connection Symbol: Available in Dyn11, Yyn0, or customized options upon request.
8. Short-Circuit Impedance: Compliant with standard impedance specifications.
9. Altitude: Suitable for installations up to 1000m above sea level, with ambient temperature not exceeding 40°C. Should these conditions be exceeded, we are prepared to adjust the parameters to align with industry standards.
If the installation conditions exceed the specified limits, we will fine-tune the parameters according to industry standards.
Power Capacity: Ranging from 25 to 2500KVA.
IOkV: A comprehensive range from 10V to 36KV, including 20KV, 22KV, 30KV, 33KV, 35KV.
Voltage Level:
Type of Voltage Regulation: Designed for Off-circuit or On-load operations.
Tapping Range: Offering ±5%, ±2x2.5%, and ±4x2.5%.
Frequency: Customizable for either 50Hz or 60Hz.
Phases: Available in either three-phase or single-phase setups.
Connection Symbol: Offered in Dyn11, Yyn0, or per specific requirements.
Short-Circuit Impedance: Adhere to standard impedance protocols.
Altitude: Designed for altitudes not exceeding 1000m and ambient temperatures not surpassing 40°C.
Should the installation conditions exceed these standard parameters, we will adjust accordingly to meet industry benchmarks.
The fully sealed oil-immersed power transformer by Chaotai Power showcases its prowess with low energy loss, minimal noise, and enhanced efficiency, achieving outstanding energy conservation and pollution reduction.
Our fully sealed transformers, unlike traditional models, eliminate the oil conservator. With the corrugated oil tank's elasticity handling oil volume changes, the system remains air-isolated to prevent oil and insulation degradation. This design enhances operation reliability and maintenance-free function under normal circumstances.
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 technological advancement as a high-tech enterprise dedicated to electrical integration. With a seasoned team comprising R&D experts, production specialists, and service professionals, boasting over 15 years of rich industry experience, we are committed to excellence and innovation.
Our diverse product portfolio includes cutting-edge high-voltage solid-state soft starters, advanced capacitor cabinets, robust high and low voltage switchgear, innovative gas-insulated switchgear, and comprehensive substations. These exceptional products find extensive applications across a spectrum of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, medical and pharmaceutical sectors, municipal commerce, water conservancy, hydropower, road traffic, and both commercial and residential domains.
At the heart of our operations is a commitment to technological innovation and a 'smart manufacturing' philosophy. We continuously attract top-notch technical talent to fortify our core competitive edge, ensuring that we deliver unmatched value to our clients while ambitiously aiming to establish the premier brand in the industry. Our journey from inception to excellence epitomizes progress and relentless innovation, guided by our principles of quality-driven survival, reputation-led growth, and efficiency-focused management. We uphold the values of technology leadership, standardized excellence, and customer-centric satisfaction in our quality and talent management endeavors, bolstering our market competitiveness. We aim to elevate China's power and grid transmission and distribution sectors, guided by faster, stronger, and higher benchmarks. Our ethos is deeply rooted in integrity, where quality takes precedence, service is paramount, and customer contentment is our timeless pursuit. We relentlessly strive for excellence, ceaseless innovation, and the creation of a brand that you can trust. Your trust fuels our ambition, and we extend our heartfelt gratitude to our clients, both new and longstanding, for their unwavering support. Senhang Technology eagerly anticipates a collaborative future with you, as we join forces to craft a brighter 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.