Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series fully sealed oil-immersed power transformer, a cutting-edge innovation by Chaotai Power. Engineered for excellence, this transformer boasts remarkable attributes such as low loss, minimal noise, and superior efficiency. It serves as a beacon of energy conservation, significantly reducing environmental impact. A standout feature of this fully sealed transformer is the elimination of the traditional oil conservator. Instead, it leverages the elasticity of a corrugated oil tank to automatically adjust and compensate for oil volume changes. This ingenious design shields the transformer from air exposure, thereby mitigating oil degradation and insulation aging, enhancing operational reliability, and minimizing maintenance during standard operations.
1. Power Capacity: 25-2500KVA, 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to meet specific customer needs. 2. Voltage Level: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Available in Off-circuit or On-load variations.
4. Tapping Range: ±5% 2x2.5% ±4x2.5%
5. Frequency: Compatible with 50Hz or 60Hz
6. Phases: Available in both three-phase and single-phase designs.
7. Connection Symbol: Dyn11, Yyn0 (or as specified per customer request)
8. Short-circuit Impedance: Adheres to Standard Impedance specifications.
9. Altitude conditions: Suitable for altitudes not exceeding 1000m, with ambient temperature not surpassing 40°C. Should these conditions be unmet, we offer parameter adjustments to align with standard protocols.
Our product is fine-tuned in accordance with international standards.
Power Capacity: A versatile range from 25-2500KVA, accommodating diverse energy needs.
Voltage Levels catered for include: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level Details:
Voltage Regulation Type: Choose between Off-circuit and On-load options.
Tapping Range: Enjoy versatility with ±5%, ±2x2.5%, and ±4x2.5% options.
Frequency: Designed to operate at either 50Hz or 60Hz.
Phases: Offers both three-phase and single-phase configurations.
Connection Symbols: Dyn11, Yyn0 (or customized as per your requirements)
Short Circuit Impedance: Conforms to Standard Impedance guidelines.
Altitude and Temperature: Designed for altitudes up to 1000m and temperatures not exceeding 40°C.
Should the environmental conditions deviate from our standard specifications, we are equipped to adjust parameters accordingly.
The fully sealed oil-immersed power transformer from Chaotai Power is a marvel of engineering with its low loss, quiet operation, and high efficiency, promoting energy-saving and pollution reduction.
In comparison with conventional oil-immersed transformers, this fully sealed model eliminates the need for an oil conservator. The innovative design allows for automatic volume adjustment through a flexible corrugated oil tank, keeping the transformer air-isolated. This advancement not only slows down oil degradation and insulation aging but also enhances overall operational reliability while reducing the need for maintenance under normal conditions.
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. stands as a beacon of innovation in the realm of electrical integration. As a high-tech enterprise, we boast a distinguished R&D, production, and service team, enriched with over 15 years of profound industry expertise, consistently leading the charge in technological advancements.
Our diverse product lineup includes cutting-edge high-voltage solid-state soft starters, efficient capacitor cabinets, versatile high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and robust substations. These products power a multitude of sectors such as energy and chemical industries, metal smelting, electric power grids, industrial manufacturing, prestigious universities and research institutions, the dynamic medical and pharmaceutical fields, municipal commerce, water conservancy, hydropower, road traffic systems, and bustling commercial and residential zones, demonstrating unparalleled reliability and efficiency.
Embracing the spirit of 'smart manufacturing,' we commit to technological innovation, steadily attracting top-tier technical talent to fortify our core competitive edge. This commitment propels our mission to offer exceptional services and craft an industry-leading brand. Since our inception, we've embarked on an extraordinary journey of continual advancement, transforming from humble beginnings to industry excellence. Our modern business approach thrives on quality for survival, reputation for growth, and management-driven efficiency. Guided by technology, standardized management, supreme quality, and unwavering customer satisfaction, we steadfastly enhance our market competitiveness, aspiring to serve China's electric power and grid sectors with unmatched speed, strength, and ambition. Integrity forms our foundation, quality is our crown jewel, service reigns supreme, and customer satisfaction is our perpetual mission. With a relentless pursuit of excellence and innovation, we are dedicated to constructing a brand synonymous with trustworthiness. Your endorsement fuels our passion. We extend our heartfelt gratitude to our cherished customers, anticipating a collaborative journey with Senhang Technology 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.