Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, expertly crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This remarkable transformer excels with its minimal energy loss, whisper-quiet operation, and unmatched efficiency. It is a beacon of energy conservation, slashing pollution and shrinking environmental footprints. Unlike conventional oil-immersed transformers, this advanced model eliminates the need for an oil conservator. Thanks to the innovative design of the corrugated oil tank, it self-adjusts to changes in oil volume, maintaining a perfectly sealed environment that wards off air exposure. This pioneering feature prevents oil degradation, extends insulation longevity, and enhances operational reliability—all without the need for routine maintenance under normal conditions.
1. Power Capacity: Ranging from 25-2500KVA, with adaptable options like 24KV, 30KV, 33KV, 35KV, 36KV, and configurations customized to meet specific customer needs. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV for versatile use. 3. Type of Voltage Regulation: Offers both Off-circuit and On-load options for flexible functionality.
4. Tapping Range: Features options of ±5%, 2x2.5%, or ±4x2.5% to accommodate various power requirements.
5. Frequency: Available in both 50Hz and 60Hz to cater to diverse regional standards.
6. Phases: Available in both Three-phase and single-phase configurations to suit different applications.
7. Connection Symbol: Choose from Dyn11, Yyn0, or customize to precise specifications with ease.
8. Short-circuit Impedance: Engineered with Standard Impedance for consistent and reliable operation.
9. Operational Conditions: Skillfully designed for use at altitudes up to 1000m and ambient temperatures below 40°C. If these conditions vary, parameters will be adjusted as per standard protocols.
All modifications align with industry standards, ensuring peak performance.
Power Capacity: From 25-2500KVA, accommodating varied energy needs.
Voltage Levels: Offered in 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, providing extensive adaptability.
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit and On-load variants for adaptable management.
Tapping Range: Offers options like ±5%, ±2x2.5%, ±4x2.5% to meet specific requirements.
Frequency Options: Available in 50Hz or 60Hz to align with local standards.
Phases: Available in both Three-phase and single-phase for broad applications.
Connection Symbol: Standard choices include Dyn11, Yyn0, with fully customizable setups available.
Short-circuit Impedance: Includes Standard Impedance for dependable functionality.
Operational Conditions: Engineered for optimal performance at altitudes up to 1000m and temperatures under 40°C.
If operational conditions change, appropriate parameter adjustments will be made according to standard guidelines.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative prowess, features exceptionally low energy loss, silent operations, and superior efficiency. It serves as a powerful energy-saving solution that significantly reduces pollution.
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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. proudly stands as a luminary in the dynamic field of electrical integration. Renowned as a high-tech enterprise, we are fortified by a distinguished team adept in research, development, production, and exceptional service, boasting over 15 years of profound industry experience. Our unwavering quest for unparalleled excellence distinguishes us as trailblazers of innovation.
Our expansive portfolio showcases cutting-edge innovations, including advanced high-voltage solid-state soft starters, sophisticated capacitor cabinets, high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and reliable substations. These exceptional products are vital across a vast array of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. Their versatility extends to both commercial and residential arenas. We take immense pride in empowering the future with our groundbreaking solutions.
Guided by a philosophy of relentless technological advancement and 'smart manufacturing,' we are fervently committed to nurturing a culture of excellence by integrating premier technical talents. This strategic emphasis enhances our core capabilities, ensuring we deliver unmatched service value to our clients consistently. Our remarkable growth story attests to our ethos: evolving from our inception to industry leadership through unwavering dedication. Our business strategy is deeply entrenched in innovation, with an unwavering commitment to quality as our survival cornerstone, market reputation as our growth path, and management efficiency as the profitability catalyst. We are devoted to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management endeavors. Our strategic vision elevates our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that reach unprecedented heights. Integrity, exceptional quality, unparalleled service, and customer satisfaction lie at the heart of our values. We persistently strive for excellence, continuously innovating to establish a brand synonymous with trust. The appreciation from our customers fuels our ambition. We warmly express our deepest gratitude to our loyal customers, both new and longstanding, and extend a heartfelt invitation to join us in a shared journey with Senhang Technology towards 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.