Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series fully sealed oil-immersed power transformer, expertly crafted by Chaotai Power. This innovation offers remarkable advantages such as minimal loss, reduced noise, and enhanced efficiency, paving the way for excellent energy savings and diminished environmental impact. Unlike typical oil-immersed transformers, this fully sealed marvel eliminates the need for an oil conservator. It smartly adjusts the oil volume through the corrugated oil tank's elastic corrugated sheet. This design ensures the transformer remains insulated from the air, effectively curtailing oil deterioration and insulation aging. By boosting operational reliability and minimizing maintenance during normal operations, this transformer stands as a beacon of advanced technology.
1. Power Capacity: A versatile range from 25 to 2500KVA, accommodating voltage levels of 24KV, 30KV, 33KV, 35KV, 36KV, and customized specifications. 2. Voltage Level: Comprehensive options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Available in Off-circuit or On-load configurations to suit diverse needs.
4. Tapping Range: Flexibility offered with options of ±5%, 2x2.5%, and ±4x2.5%.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Available in both three-phase and single-phase options.
7. Connection Symbol: Configurable as Dyn11, Yyn0, or as per specific requirements.
8. Short-Circuit Impedance: Adheres to Standard Impedance norms for assured performance.
Altitude is not exceeding 1000m, ambient temperature not exceeding 40°C. If the environmental conditions differ, we will adjust the parameters in
accordance with standard practices to ensure optimal operation.
Power Capacity: An expansive range of 25-2500KVA to meet diverse power needs.
IOkV, 1OY, 2OK, 22KV, 2ANV, 30KV, 33KV, 35KV, 36KV - a comprehensive voltage spectrum.
Voltage Level:
Type of Voltage Regulation: Choose between Off-circuit or On-load to suit your system's demands.
Tapping Range: Versatile options include ±5%, ±2x2.5%, and ±4x2.5% for tailored performance.
Frequency: Adaptable to systems operating at 50Hz or 60Hz.
Phases: Available in configurations of three-phase or single-phase.
Connection Symbol: Options include Dyn11, Yyn0, or as specified for custom needs.
Short-Circuit Impedance: Conforms to Standard Impedance for reliable operation.
Altitude should not exceed 1000m, ambient temperature should remain below 40°C.
If environmental conditions exceed these limits, we will adjust parameters according to standard norms to ensure optimal performance.
The fully sealed oil-immersed power transformer, an innovation by Chaotai Power, stands out with its low loss, minimal noise, and high efficiency, granting excellent energy savings and reducing environmental impact.
In contrast to conventional oil-immersed transformers, the fully sealed variant eliminates the oil conservator. The oil volume dynamically adjusts through the corrugated oil tank's elasticity, ensuring air isolation. This design effectively retards oil deterioration and insulation aging, significantly enhancing reliability and reducing the need for maintenance during standard 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 pioneering high-tech enterprise dedicated to the innovative realm of electrical integration. With an expert R&D, production, and service team boasting over 15 years of distinguished industry experience, we are committed to excellence.
Our extensive product line encompasses high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and comprehensive substations. Proudly serving a diverse array of industries, our products are indispensable in fields such as energy, chemical processing, metal smelting, electric power grids, industrial manufacturing, and more. We are deeply rooted in sectors including universities, research institutions, medical and pharmaceutical industries, municipal commerce, water conservancy, hydropower, road traffic, and residential as well as commercial areas, ensuring wide-ranging impact and reliability.
Our commitment to technological innovation is unwavering, embracing a 'smart manufacturing' ethos. By attracting top-tier technical talents, we enhance our core competitiveness, delivering unparalleled value to our esteemed customers as we tirelessly build the industry's premier brand. From inception to excellence, our company has charted a remarkable journey of continuous progress. We champion innovation, underpinned by quality, market acumen, reputation, and efficient management. By holding 'technology as the guide, standardized management, excellent quality, and customer satisfaction' as our pillars, we amplify our market edge. Serving China's electric power and grid sectors with relentless speed and precision, we uphold integrity, prioritize quality, and exalt supreme service. Customer satisfaction remains our guiding principle. Our relentless pursuit of excellence and continuous innovation fuels our mission to forge a trusted brand. We are driven by your recognition. To our cherished new and loyal customers, we express deep gratitude for your unwavering support. Senhang Technology eagerly anticipates forging a shared vision for a brighter future, together with you.
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.