Product Description



Oil Immersed Series Transformer:
The S11-M series, a fully sealed oil-immersed power transformer by Chaotai Power, exemplifies cutting-edge technology with its exceptional features of low loss, minimized noise, and outstanding efficiency. Designed to deliver a remarkable energy-saving performance, it significantly reduces pollution. Distinct from traditional oil-immersed transformers, this innovative transformer eliminates the oil conservator, and its oil volume fluctuations are ingeniously compensated through the elasticity of the corrugated sheet in the corrugated oil tank. By effectively isolating the transformer from air exposure, it notably hinders oil deterioration and insulation aging, thereby enhancing operational reliability and ensuring maintenance-free performance under normal conditions.
1. Power Capacity: Ranging from 25-2500KVA, our transformers accommodate various specifications including 24KV, 30KV, 33KV, 35KV, 36KV, and customizable options to meet specific customer requirements. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation to suit your needs.
4. Tapping Range: Versatile options available at ±5%, ±2x2.5%, and ±4x2.5% to ensure precise performance.
5. Frequency: Compatible with both 50Hz and 60Hz frequencies.
6. Phases: Available in both three-phase and single-phase configurations to cater to diverse applications.
7. Connection Symbol: Flexible connection options include Dyn11, Yyn0, or any specified upon request.
8. Short-circuit Impedance: Built to standard impedance specifications for reliable performance.
9. Altitude: Designed to function optimally at altitudes not exceeding 1000m, and in ambient temperatures not surpassing 40°C. Should these conditions deviate, parameter adjustments are made according to standard protocols.
In cases where operational conditions cannot be met, parameter adjustments will be made in alignment with established standards.
Power Capacity: From 25 to 2500KVA, tailored to diverse energy demands.
Voltage Levels: Offering a comprehensive range from 10KV to 36KV to accommodate various applications.
Voltage Level:
Type of Voltage Regulation: Available in Off-circuit or On-load options, providing flexibility in operation.
Tapping Range: Offering a variety of options at ±5%, ±2x2.5%, and ±4x2.5% for precise regulation.
Frequency: Designed for both 50Hz and 60Hz operational frequencies.
Phases: Available in configurations for both three-phase and single-phase systems.
Connection Symbol: Options include Dyn11, Yyn0, or as per specific requirements.
Short-circuit Impedance: Conforming to standard impedance specifications for dependable operation.
Altitude: Suitable for altitudes not exceeding 1000m and ambient temperatures up to 40°C.
If operational conditions are unmet, adjustments are made in line with standard guidelines.
Chaotai Power's fully sealed oil-immersed power transformer is engineered for excellence, offering low loss, reduced noise, and high efficiency. It's an energy-saving marvel that minimizes environmental impact.
A leap ahead of conventional oil-immersed transformers, this fully sealed variant eliminates the need for an oil conservator. The transformer cleverly compensates for oil volume changes through the corrugated sheet's elasticity within the oil tank. This isolation from air significantly curtails oil degradation and insulation aging, bolstering operational reliability and ensuring maintenance-free functionality during standard operation.
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 as a beacon of innovation and excellence in the realm of electrical integration. As a high-tech enterprise, we boast a world-class R&D, production, and service team, enriched by over 15 years of illustrious industry experience.
Our diverse product portfolio features cutting-edge high-voltage solid-state soft starters, state-of-the-art capacitor cabinets, sophisticated high and low voltage switchgear, innovative gas-insulated switchgear, and versatile substations. These advanced solutions power a multitude of sectors, including the dynamic energy sector, transformative chemical industries, robust metal smelting, expansive electric power grids, and diverse industrial manufacturing domains. Our products are esteemed in the halls of universities and research institutions, contribute to the life-saving medical and pharmaceutical sectors, support municipal commerce, fortify water conservancy projects, enhance hydropower infrastructure, streamline road traffic, and enrich both the commercial and residential landscapes.
Our unwavering commitment is to pioneering technological innovation under the guiding star of 'smart manufacturing.' By attracting and nurturing top-tier technical talent, we significantly bolster our core competitiveness, delivering unparalleled value and service to our esteemed customers. We are on a relentless quest to forge the industry's premier brand. Our journey from inception to excellence has been marked by steadfast progress, innovation, and adaptation, consistently adhering to a business ethos where quality ensures survival, reputation fuels growth, and management drives efficiency. Our mission is encapsulated in a commitment to 'technology as our guide, standardized management, superior quality, and unwavering customer satisfaction.' This mission fortifies our market competitiveness, propelling us to serve China’s electric power and grid sectors with unmatched speed, strength, and ambition. Our foundation is built on integrity, with quality held as the highest virtue, service as the ultimate priority, and customer satisfaction as our perpetual promise. We are devoted to the relentless pursuit of excellence, ongoing innovation, and the creation of a brand that commands trust. Your recognition is the fuel that powers our journey forward. We express heartfelt gratitude to our new and longstanding customers for their enduring support and trust. Senhang Technology eagerly anticipates forging a brighter future together with you, hand in hand.
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.