Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a marvel of engineering from Zhejiang Chaotai Complete Equipment Co., Ltd. This fully sealed oil-immersed power transformer is a testament to superior craftsmanship, offering unparalleled attributes such as significantly reduced energy loss, whisper-quiet operation, and remarkable efficiency. As an exemplary energy-saving solution, it dramatically lowers pollution and minimizes environmental impact. Diverging from traditional models, this cutting-edge transformer does away with the oil conservator. Its intelligent design leverages the corrugated oil tank's elasticity to autonomously adjust and compensate for oil volume changes, ensuring the transformer remains perfectly sealed against air exposure. This state-of-the-art feature prevents oil degradation, decelerates insulation aging, and substantially enhances operational reliability, all while ensuring maintenance-free performance during standard operations.
1. Power Capacity: Ranging from 25KVA to an impressive 2500KVA, available at 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to meet specific customer needs 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Choose between Off-circuit or On-load, tailoring to your precise requirements
4. Tapping Range: Flexibility offered at ±5%, 2x2.5%, ±4x2.5%
5. Frequency: Compatible with either 50Hz or 60Hz
6. Phases: Available in both Three-phase and single-phase configurations
7. Connection Symbol: Dyn11, Yyn0 – with the option for customization as required
8. Short-circuit Impedance: Adheres to Standard Impedance specifications
9. Operational Conditions: Optimized for altitudes not exceeding 1000m, with an ambient temperature cap of 40°C. Should these conditions vary, parameter adjustments will be implemented in line with standard protocols.
All adjustments are meticulously aligned with industry standards, ensuring robust performance.
Power Capacity: Spanning from 25KVA to 2500KVA
Voltage Levels: Diverse options including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Options include Off-circuit or On-load
Tapping Range: Offered at ±5%, ±2x2.5%, ±4x2.5% for enhanced operational flexibility
Frequency Options: Available in 50Hz or 60Hz to suit varying requirements
Phases: Configurations available in either Three-phase or single-phase
Connection Symbol: Options of Dyn11, Yyn0, with customization available upon request
Short-circuit Impedance: Designed with Standard Impedance for consistent performance
Operational Conditions: Suited for altitudes not exceeding 1000m, with ambient temperatures not surpassing 40°C
Should operational conditions deviate, necessary parameter adjustments will be made, adhering strictly to standard guidelines.
Zhejiang Chaotai Complete Equipment Co., Ltd. introduces a breakthrough in transformer technology with its fully sealed oil-immersed power transformer, a beacon of innovation that features low energy loss, stealthy quiet operation, and unmatched efficiency. This transformative energy-saving solution significantly reduces pollution, setting a new standard in environmental stewardship.
Unlike conventional counterparts, this groundbreaking fully sealed design eradicates the need for an oil conservator. It deftly manages oil volume fluctuations utilizing the elasticity of the corrugated oil tank sheet, maintaining the transformer in an air-isolated state. This crucial innovation not only blocks oil degradation and slows insulation aging but also elevates reliability and removes the necessity for regular maintenance, ensuring seamless, worry-free 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. epitomizes unparalleled technological excellence in the dynamic sphere of electrical integration. As a prestigious high-tech enterprise, we proudly present a committed R&D, production, and service team, bolstered by over 15 years of profound industry expertise. Our unyielding drive for perfection distinguishes us as pioneers of innovation and leaders in our field.
Our expansive product range showcases state-of-the-art solutions including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and advanced substations. These indispensable innovations power a vast array of industries such as energy, chemical processing, metal smelting, electric power grids, industrial production, academic institutions, healthcare, municipal commerce, efficient water management, hydropower, and road traffic systems. Extending our reach to both commercial and residential domains, we pride ourselves on shaping the future with our groundbreaking solutions that transcend boundaries.
Rooted in a philosophy of relentless technological progress and 'smart manufacturing,' we are dedicated to nurturing a culture of excellence by integrating top-tier technical talents. This strategic emphasis enhances our core strengths, ensuring that we consistently deliver unmatched service value to our esteemed clients. Our growth journey epitomizes our ethos: evolving from humble beginnings to industry leadership through unwavering dedication and expertise. Innovation remains the heart of our business strategy, with an unshakeable commitment to quality as the foundation of our survival, a sterling market reputation as the avenue for development, and management efficiency as the catalyst for profitability. We pledge to leverage 'technology as our compass, structured management, superior quality, and customer satisfaction' as the cornerstones of our quality and talent management initiatives. Our strategic aspiration is to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with goals that are faster, stronger, and loftier. Our core values revolve around integrity, unrivaled quality, exceptional service, and absolute customer satisfaction. We are driven by an unrelenting quest for excellence, continually innovating to forge a brand synonymous with trust. The appreciation of our customers propels our ambition further. We extend sincere gratitude to our loyal customers, both new and longstanding, and warmly welcome you to join Senhang Technology on a shared expedition towards a luminous 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.