Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil-immersed power transformer, innovatively developed by Chaotai Power, showcases an exceptional blend of low loss, minimal noise, and high efficiency. By delivering outstanding energy-saving capabilities while significantly reducing pollution, this transformer sets new standards in power distribution. Unlike conventional oil-immersed transformers, this fully sealed marvel foregoes the oil conservator. Instead, the oil volume adjustments are ingeniously managed by the flexible corrugated oil tank, effectively isolating the transformer from air exposure. This design not only mitigates oil degradation and insulation aging but also enhances operational reliability and negates the need for routine maintenance.
1. Power Capacity: Ranging from 25 to 2500 KVA, with options for 24KV, 30KV, 33KV, 35KV, 36KV, and additional custom 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 application.
4. Tapping Range: Fine-tune your transformer with options of ±5%, 2x2.5%, or ±4x2.5%.
5. Frequency: Operative at either 50Hz or 60Hz, accommodating diverse power systems.
6. Phases: Available in both three-phase and single-phase configurations to meet varied needs.
7. Connection Symbol: Configurable as Dyn11, Yyn0, or per specific requirements.
8. Short-Circuit Impedance: Designed with standard impedance for reliable performance under stress.
9. Altitude: Suitable for installations at altitudes not exceeding 1000m with ambient temperatures capped at 40°C. Should these conditions not be met, we expertly adjust parameters to align with industry standards.
We ensure parameter modulation according to standard protocols, guaranteeing optimal performance.
Power Capacity: Spanning 25-2500KVA to cater to a broad spectrum of energy needs.
Voltage Levels Available: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 24KV, 30KV, 33KV, 35KV, 36KV, providing flexibility for various applications.
Voltage Level:
Type of Voltage Regulation: Choose between Off-circuit or On-load, tailored to your specific operational requirements.
Tapping Range: Precision tuning available with options ±5%, ±2x2.5%, and ±4x2.5% for optimal performance.
Frequency: Compatible with both 50Hz and 60Hz systems for versatile use.
Phases: Flexible in design, offering both three-phase and single-phase options.
Connection Symbol: Configurable to Dyn11, Yyn0, or as specified by your requirements.
Short-Circuit Impedance: Optimized for standard impedance, ensuring stability and reliability.
Operational Conditions: Ideal for altitudes up to 1000m and ambient temperatures up to 40°C. For environments outside these parameters, adjustments are made to maintain performance standards.
Tailored parameter adjustments are made to maintain optimal performance in non-standard conditions, ensuring adherence to stringent standards.
The fully sealed oil-immersed power transformer by Chaotai Power epitomizes modern engineering with its low loss, low noise, and high efficiency. This innovative design not only offers remarkable energy savings but also contributes to a reduction in environmental pollution.
Setting itself apart from traditional oil-immersed transformers, this fully sealed unit eliminates the need for an oil conservator. The transformation in oil volume is deftly managed by the corrugated oil tank's agility, effectively shielding the transformer from atmospheric exposure. This enhances operational reliability, slows deterioration, and reduces maintenance requirements during standard operations, thereby extending the transformer’s lifespan and efficiency.
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 distinguished high-tech enterprise excelling in the realm of electrical integration. Our company is powered by a dedicated team comprising experts in research and development, production, and customer service, each bringing to the table more than 15 years of invaluable industry experience.
Our premier lineup of products encompasses high-voltage solid-state soft starters, capacitor cabinets, versatile high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and comprehensive substations. These products have carved a niche across a multitude of sectors, including dynamic energy and chemical industries, robust metal smelting operations, expansive electric power grids, innovative industrial manufacturing, prestigious universities and cutting-edge research institutions, as well as the critical medical and pharmaceutical sectors. Additionally, they serve municipal commerce, essential water conservancy projects, hydropower initiatives, road traffic management, and commercial and residential infrastructures, providing unmatched reliability and efficiency.
At the heart of Zhejiang ChaoTai is a commitment to technological innovation aligned with our 'smart manufacturing' philosophy. We actively recruit top-tier technical talents to amplify our core competitiveness, consistently delivering exceptional value to our clients while establishing ourselves as the industry's premier brand. From our inception, we've journeyed from nascent beginnings to stellar achievements, adhering to a growth trajectory fueled by quality, market-driven strategies, reputation, and efficient management. Our unwavering commitment lies in 'technology as the guide, standardized management, excellent quality, and customer satisfaction,' streamlining our quality and talent management to bolster our market standing. Our mission is to serve China's power and grid transmission and distribution sectors with unmatched speed, strength, and ambition. We believe in the bedrock principles of integrity, paramount quality, exceptional service, and unyielding customer satisfaction. Pursuing excellence and fostering continuous innovation are cornerstones of our brand development, where your trust and recognition fuel our progress. We extend heartfelt thanks to our cherished clientele, both new and longstanding, and eagerly anticipate collaborating to craft a brighter future, hand in hand with Senhang Technology.
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.