Product Description



Oil Immersed Series Transformer:
Introducing the cutting-edge S11-M series fully sealed oil-immersed power transformer, a masterpiece by Chaotai Power. This revolutionary transformer stands out with its exceptional qualities of reduced loss, minimal noise, and outstanding efficiency, ensuring remarkable energy savings and diminished pollution. Unlike traditional oil-immersed transformers, our fully sealed model eliminates the need for an oil conservator, cleverly utilizing the corrugated oil tank's elastic property to adjust and compensate for oil volume changes automatically. This design innovation isolates the transformer from the air, effectively slowing oil deterioration and insulation aging, enhancing operational reliability, and eliminating the need for maintenance during regular operation.
1. Power Capacity: 25-2500KVA, available in 24KV, 30KV, 33KV, 35KV, 36KV, and customizable options to suit customer requirements. 2. Voltage Level: Offering a range of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Options include Off-circuit or On-load.
4. Tapping Range: Precision options of ±5%, 2x2.5%, and ±4x2.5%.
5. Frequency: Configurable to either 50Hz or 60Hz.
6. Phases: Available in Three-phase or single-phase configurations.
7. Connection Symbol: Dyn11, Yyn0, or customized as requested.
8. Short-circuit Impedance: Engineered to meet Standard Impedance.
9. Altitude and Temperature Conditions: Designed for altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C. Should standard conditions be unmet,
we will tailor parameters to align with established standards.
Power Capacity: Ranging from 25 to 2500KVA to meet diverse power needs.
Available in voltage levels: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 24KV, 30KV, 33KV, 35KV, 36KV.
Voltage Level: Tailored voltage options to meet various application demands.
Type of Voltage Regulation: Choose between Off-circuit or On-load to suit specific operational requirements.
Tapping Range: Customizable options of ±5%, ±2x2.5%, and ±4x2.5% for precise control.
Frequency: Flexibility to operate at either 50Hz or 60Hz, adapting to regional standards.
Phases: Select between Three-phase or single-phase configurations according to power distribution needs.
Connection Symbol: Standard options include Dyn11, Yyn0, or as per specific custom requests.
Short-circuit Impedance: Designed to comply with Standard Impedance specifications for optimal performance.
Altitude and Temperature Conditions: Optimized for altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C.
In exceptional conditions, our parameters will be adjusted in adherence to standard guidelines.
Chaotai Power presents its state-of-the-art fully sealed oil-immersed power transformer, a marvel of engineering with attributes of minimal loss, reduced noise, and superior efficiency, aimed at achieving superb energy conservation while minimizing environmental impact.
This fully sealed transformer, distinct from the conventional oil-immersed type, does away with the oil conservator. It smartly employs the elastic properties of the corrugated oil tank to auto-adjust and compensate for oil volume shifts. This innovation keeps the transformer air-insulated, thus significantly slowing the aging of oil and insulation, enhancing operational reliability, and eliminating 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. embodies the pinnacle of high-tech prowess in electrical integration, boasting a dynamic team dedicated to R&D, production, and unparalleled service. With over 15 years of esteemed industry experience, our expertise is evident.
Our exquisite array of products extends to high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These innovations have found indispensable roles across energy and chemical sectors, metal smelting, power grids, industrial manufacturing, academia, medical and pharmaceutical industries, municipal commerce, water conservancy, hydropower, transportation infrastructure, as well as in commercial and residential domains, showcasing their versatile applications.
Championing technological innovation and the ethos of 'smart manufacturing', we take bold strides by enlisting top-tier technical talent to fortify our core competitiveness. Our mission is to offer unparalleled services and foster the industry's foremost brand. From inception, we have journeyed from conceptualization to realization, continually surpassing benchmarks. Our unwavering commitment is rooted in quality-driven survival, reputation-fueled development, and management-enhanced efficiency. We proudly prioritize 'technology as the guide, standardized management, exceptional quality, and ultimate customer satisfaction' as our guiding principles. These tenets empower us to excel in the power transmission and distribution landscape of China, setting faster, stronger, higher benchmarks. At the heart of our philosophy lies integrity, supreme quality, distinguished service, and unwavering customer satisfaction. We relentlessly pursue excellence, foster perpetual innovation, and build a brand worthy of trust. Your acknowledgment fuels our ambition. We extend heartfelt gratitude to our loyal patrons, both new and returning, for their unwavering support and cherish the prospect of forging a brighter tomorrow together with Senhang Technology by our side.
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.