Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil-immersed power transformer, brought to you by Zhejiang Chaotai Complete Equipment Co., Ltd., is a masterpiece of innovation and efficiency. Engineered for superior performance, it boasts low loss, minimal noise, and remarkable efficiency. This transformer is a beacon of energy conservation and reduced pollution. Unlike conventional oil-immersed transformers, this fully sealed marvel eliminates the oil conservator, using the corrugated oil tank's elasticity to automatically adjust and compensate for oil volume changes. It is isolated from the air, preventing oil degradation and insulation aging, thereby enhancing operational reliability and minimizing the need for maintenance during regular operations.
1. Power Capacity: 25-2500KVA, available for 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to other customer specifications. 2. Voltage Level: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV.
4. Tapping Range: ±5%, 2x2.5%, ±4x2.5%
5. Frequency: Compatible with 50Hz or 60Hz
6. Phases: Available in Three or Single-Phase Configurations
7. Connection Symbol: Dyn11, Yyn0 (customizable upon request)
8. Short-Circuit Impedance: Standard Impedance for Reliable Performance
9. Altitude: Suitable for up to 1000m, with ambient temperature not exceeding 40°C. For conditions beyond these, parameters will be adjusted accordingly.
Parameters will be modulated in accordance with standard requirements if conditions are exceeded.
Power Capacity Specifications: Ranges from 25 to 2500KVA
Voltage Specifications include: 10KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Specifications:
Type of Voltage Regulation: Offers options for Off-circuit or On-load adjustments
Tapping Range Details: ±5%, ±2x2.5%, ±4x2.5% for precision control
Frequency Compatibility: Designed for both 50Hz or 60Hz systems
Phases Available: Choose between Three or Single-Phase options
Connection Symbols Offered: Dyn11, Yyn0 (with customization available)
Short-Circuit Impedance: Conforms to Standard Impedance requirements
Site Suitability: Operates optimally at altitudes not exceeding 1000m and temperatures below 40°C
For environments exceeding these conditions, parameter modulation will be conducted to maintain standards.
This fully sealed oil-immersed power transformer, a cutting-edge innovation by Chaotai Power, excels in reducing losses, noise, and maximizing efficiency, making it a champion of energy efficiency and environmental sustainability.
In a league of its own compared to traditional oil-immersed transformers, this advanced fully sealed transformer forgoes the oil conservator. It uses the corrugated oil tank's elasticity to deftly manage oil volume changes. The air isolation ensures the longevity of the oil and insulation, greatly boosting operational reliability and reducing maintenance needs during normal operations.
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 leading force in high-tech enterprise innovation, dedicated to revolutionizing the electrical integration sector. With a robust R&D team, seasoned production experts, and top-tier service professionals, our company boasts over 15 years of unparalleled industry experience.
Our distinguished product lineup encompasses high-voltage solid-state soft starters, advanced capacitor cabinets, state-of-the-art high and low voltage switchgear, cutting-edge gas-insulated switchgear, and sophisticated substations. These exceptional products empower a myriad of sectors including energy and chemical industries, metal smelting, electric power grids, industrial manufacturing, academic and research institutions, medical and pharmaceutical industries, municipal commerce, water conservancy and hydropower, road traffic systems, and urban as well as residential infrastructures.
Rooted in a philosophy of technological innovation and 'smart manufacturing,' we aggressively recruit elite technical talents to significantly bolster our core competencies. Our mission is to deliver unparalleled value to our customers, aspiring to establish the preeminent brand in the industry. From our inception, we've relentlessly pursued excellence, evolving from modest beginnings to industry leadership. We champion innovation, adhering to a modern business strategy that prioritizes quality for survival, market-driven development, reputation for growth, and management for efficiency. Our commitment focuses on 'technology as the guide, standardized management, outstanding quality, and customer satisfaction,' which sharpens our market edge. Aiming to serve China's electric power and grid sectors with unmatched speed, strength, and ambition, we hold integrity as our bedrock, quality as our priority, service as supreme, and customer satisfaction as our ultimate mission. With a relentless pursuit of excellence and continuous innovation, we are steadfast in building a brand that earns trust across the globe. Your recognition fuels our journey. We extend heartfelt gratitude to our loyal customers, both new and old, whose support and affinity empower us. At Senhang Technology, we eagerly anticipate forging a brighter future together, 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.