Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a trailblazing fully sealed oil-immersed power transformer by Chaotai Power. This revolutionary product boasts exceptional features such as low loss, minimal noise, and remarkable efficiency, leading to outstanding energy conservation and reduced environmental impact. Unlike traditional oil-immersed transformers, our fully sealed version eliminates the oil conservator. Instead, the volume fluctuations are ingeniously managed by the elastic corrugated sheet within the oil tank, ensuring superior isolation from ambient air. This innovative design minimizes oil degradation, prolongs insulation life, and enhances operational reliability, thereby eliminating the need for maintenance during standard operations.
1. Power Capacity: Ranges from 25-2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, tailored to customer specifications. 2. Voltage Level: Multiple options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load solutions.
4. Tapping Range: Customizable options of ±5%, ±2x2.5%, ±4x2.5% to meet diverse needs.
5. Frequency: Compatible with either 50Hz or 60Hz, ensuring versatile application.
6. Phases: Available in both Three-phase and Single-phase configurations.
7. Connection Symbol: Options include Dyn11, Yyn0, or as specified by customer demands.
8. Short-circuit Impedance: Manufactured to standard impedance guidelines for reliability.
Altitude should not exceed 1000m, and ambient temperature should not surpass 40°C. If these conditions cannot be satisfied,
we will adjust parameters to align with standard requirements.
Power Capacity: 25-2500KVA
Voltage Levels: A comprehensive range from 10KV to 36KV, including 22KV, 30KV, 33KV, 35KV.
Voltage Level:
Type of Voltage Regulation: Available in Off-circuit or On-load configurations.
Tapping Range: Engineered for flexibility at ±5%, ±2x2.5%, ±4x2.5%.
Frequency: Designed for both 50Hz and 60Hz systems.
Phases: Choose between a Three-phase or Single-phase setup.
Connection Symbol: Configurable to Dyn11, Yyn0, or customized as required.
Short-circuit Impedance: Adhering to standard impedance for optimal performance.
Altitude should not exceed 1000m, with ambient temperature limits at 40°C.
Should environmental conditions differ, our parameters will be modulated to meet the necessary standards.
Our fully sealed oil-immersed power transformer from Chaotai Power is designed to deliver low loss, reduced noise, and high efficiency, offering significant energy savings and minimized pollution.
In comparison to conventional oil-immersed transformers, this advanced model eliminates the need for an oil conservator. The oil volume changes are adeptly managed by the flexibility of the corrugated sheet in the oil tank, ensuring complete isolation from air exposure. This design innovation prevents oil deterioration, delays insulation aging, boosts operational reliability, and negates the need for maintenance during regular functionality.
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 pioneering high-tech enterprise deeply entrenched in the sphere of electrical integration. Our dedicated professional team excels in R&D, production, and customer service, boasting over 15 years of invaluable industry experience.
Our diverse and cutting-edge product lineup features high-voltage solid-state soft starters, capacitor cabinets, versatile high and low voltage switchgear, gas-insulated switchgear, and state-of-the-art substations. These innovative solutions find extensive applications across a varied spectrum of industries, including energy, chemical production, metal smelting, electric power infrastructures, industrial manufacturing realms, academia, top-tier research institutions, healthcare and pharmaceutical sectors, municipal commerce, water conservancy projects, hydropower initiatives, road traffic systems, as well as commercial and residential complexes.
We are unwavering in our commitment to technological innovation, embracing the 'smart manufacturing' development philosophy. By actively recruiting elite technical talents, we aim to significantly elevate our core competitiveness, ensuring unparalleled value for our clients as we forge the leading brand in our industry. Since our inception, we have embarked on a journey of consistent growth—from humble beginnings to becoming a distinguished leader. Our strategy is rooted in relentless innovation, upholding quality as our survival mantra, market orientation as our compass, reputation as the cornerstone of development, and efficiency as a management hallmark. We pledge allegiance to 'technology as our beacon, standardized management, impeccable quality, and unyielding customer satisfaction,' which underpins our quality and talent management ethos. This commitment enhances our competitive edge in the market, empowering us to better serve China’s electric power and grid sectors with heightened speed, robustness, and elevated aspirations. Integrity is our foundation, quality is our hallmark, service is our creed, and customer satisfaction is our eternal pledge. Our pursuit of excellence and relentless innovation propels us toward building a trusted and esteemed brand. The recognition and support from our esteemed clients fuel our endeavors, and we extend our heartfelt gratitude to all new and loyal patrons. Senhang Technology eagerly anticipates collaborating with you, hand in hand, to craft a brighter and more prosperous 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.