Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, an innovative fully sealed oil-immersed power transformer from Zhejiang Chaotai Complete Equipment Co., Ltd. This cutting-edge transformer is meticulously designed for outstanding performance, characterized by minimal energy loss, whisper-quiet operation, and unparalleled efficiency. As a leading energy-saving solution, it significantly diminishes environmental pollution. Diverging from conventional oil-immersed transformers, this advanced model foregoes an oil conservator, employing a smart design that autonomously adjusts oil volume changes via the corrugated oil tank's elastic properties, ensuring a hermetic seal against air exposure. This state-of-the-art feature averts oil deterioration, slows insulation aging, and substantially increases operational reliability, all while obviating the need for routine maintenance during regular service.
1. Power Capacity: Spanning from 25-2500KVA and adaptable to 24KV, 30KV, 33KV, 35KV, 36KV with customization available to meet client specifications 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Available as Off-circuit or On-load to suit diverse needs
4. Tapping Range: Configurable to ±5%, 2x2.5%, ±4x2.5% for precise voltage control
5. Frequency: Available in 50Hz or 60Hz to accommodate varying regional standards
6. Phases: Offered in both three-phase and single-phase configurations for flexibility in application
7. Connection Symbol: Available as Dyn11, Yyn0, with customization options to match specific requirements
8. Short-circuit Impedance: Engineered to Standard Impedance for optimal performance
9. Operational Conditions: Designed for altitudes up to 1000m and ambient temperatures below 40°C. If these conditions are exceeded, we make the necessary parameter adjustments according to our standard protocols.
All required adjustments are meticulously executed in compliance with stringent industry standards.
Power Capacity: Configurable from 25-2500KVA
Voltage Levels: Choices include 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Select either Off-circuit or On-load based on operational requirements
Tapping Range: Fine-tunable to ±5%, ±2x2.5%, ±4x2.5% to precisely align with voltage needs
Frequency Options: Choose between 50Hz or 60Hz to align with global electrical standards
Phases: Available in three-phase or single-phase configurations, providing adaptability for various applications
Connection Symbol: Configurable as Dyn11, Yyn0, with options for customization to fulfill specific needs
Short-circuit Impedance: Calibrated to Standard Impedance to ensure reliability
Operational Conditions: Suitable for altitudes up to 1000m and ambient temperatures not exceeding 40°C
Should conditions deviate from these parameters, we are prepared to make precise adjustments adhering to established guidelines.
The fully sealed oil-immersed power transformer from Chaotai Power is a masterpiece of innovation, embodying low energy loss, quiet operation, and exceptional efficiency. It stands as a premier energy-saving solution that dramatically reduces environmental pollution.
Unlike traditional oil-immersed transformers, this fully sealed configuration removes the need for an oil conservator. It ingeniously manages oil volume fluctuations with the elasticity of the corrugated oil tank, ensuring the transformer remains perfectly air-isolated. This crucial feature not only prevents oil degradation and insulation aging but also enhances reliability and eliminates the necessity for regular maintenance.
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 shining example of technological mastery within the electrical integration industry. As a celebrated high-tech enterprise, we possess a talented R&D, production, and service team enhanced by over 15 years of rich expertise. Our unwavering quest for perfection positions us as pioneers in innovation.
Our expansive product range showcases innovative solutions like high-voltage solid-state soft starters, advanced capacitor cabinets, state-of-the-art high and low voltage switchgear, efficient gas-insulated switchgear, and cutting-edge substations. These essential products seamlessly integrate into a wide array of sectors, covering energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academic institutions, healthcare, municipal commerce, water management, hydropower, and road traffic. They extend their utility into both commercial and residential settings. We take pride in fueling the future with our revolutionary solutions.
Rooted in a principle of perpetual technological advancement and 'smart manufacturing,' we are dedicated to cultivating a culture of excellence by integrating top-tier technical talents. This strategic approach enhances our fundamental strengths, ensuring we provide unmatched service value to our clients. Our growth journey exemplifies our ethos: transitioning from inception to industry leadership through unwavering commitment. Our business blueprint is firmly based on innovation, with an unyielding dedication to quality as the key to survival, a strong market reputation as the roadmap to development, and management efficiency as the secret to profitability. We promise to leverage 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management strategies. Our strategic vision aims to boost our market competitiveness, serving China's electric power and grid transmission and distribution sectors with goals that are faster, stronger, and higher. Integrity, unrivaled quality, outstanding service, and customer satisfaction are our core values. We are driven in our pursuit of excellence, consistently innovating to build a brand synonymous with trust. The recognition from our customers propels our ambition. We express sincere gratitude to our loyal customers, both new and longtime, and warmly invite you to join Senhang Technology on a shared journey toward a brighter future.
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.