Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, Chaotai Power's innovative fully sealed oil-immersed power transformers. Meticulously engineered, these transformers boast remarkable characteristics such as low loss, minimal noise, and exceptional efficiency. They are designed to deliver outstanding energy-saving performance, significantly mitigating pollution. Unlike conventional transformers, this fully sealed variant eliminates the need for an oil conservator. The remarkable elasticity of the corrugated oil tank's corrugated sheet seamlessly adjusts and compensates for variations in oil volume. This pioneering design effectively isolates the transformers from external air, thereby significantly preventing the degradation of oil and insulation, enhancing operational reliability, and eliminating routine maintenance requirements.
1. Power Capacity: Ranging from 25 to 2500KVA, with voltage options of 24KV, 30KV, 33KV, 35KV, 36KV, and customizable configurations as per client specifications. 2. Voltage Level Options: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Voltage Regulation Type: Options include Off-circuit or On-load adjustment.
4. Tapping Range: Versatile adjustment capabilities of ±5 %, with intermediate variations of ±2x2.5 % and ±4x2.5 %.
5. Frequency: Flexible operation at either 50Hz or 60Hz.
6. Phases: Available in both Three-phase and Single-phase configurations.
7. Connection Symbol: Configurable options include Dyn11, Yyn0, or as specified by customer requirements.
8. Short-Circuit Impedance: Designed to meet Standard Impedance specifications.
9. Altitude: Operational capability at altitudes not exceeding 1000 meters, with ambient temperatures not surpassing 40°C.
In scenarios where conditions exceed these parameters, we will adeptly adjust and modulate parameters in accordance with industry standards.
Power Capacity: Extensive range from 25 to 2500KVA.
Voltage Options: Comprehensive range from 10KV to 36KV.
Voltage Level:
Voltage Regulation Type: Choice of Off-circuit or On-load regulation.
Tapping Range: Configurable to ±5%, with nuanced adjustments of ±2x2.5% and ±4x2.5%.
Frequency: Operable at both 50Hz and 60Hz.
Phases: Designed for both Three-phase and Single-phase operations.
Connection Symbol: Available in Dyn11, Yyn0 configurations, or tailored as per specific requests.
Short-Circuit Impedance: Adheres to Standard Impedance norms.
Operational Conditions: Suitable for altitudes up to 1000 meters and ambient temperatures up to 40°C.
In instances where standard conditions are exceeded, parameter modulation will be executed in alignment with established standards.
Chaotai Power's fully sealed oil-immersed power transformer is distinguished by its low loss, quiet operation, and high efficiency, enabling remarkable energy conservation whilst significantly reducing environmental impact.
In contrast to typical oil-immersed transformers, this fully sealed design omits the oil conservator. The elasticity of the corrugated oil tank's sheet allows for automatic oil volume adjustments, effectively isolating the transformer from air exposure. This innovation protects against oil deterioration and insulation aging, boosting reliability and eliminating the need 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. stands proudly as a high-tech beacon in the realm of electrical integration. With an accomplished R&D, production, and service team boasting over 15 years of profound industry expertise, we are dedicated to pioneering innovation and excellence.
Our diverse product line includes high-voltage solid-state soft starters, sophisticated capacitor cabinets, comprehensive high and low voltage switchgear, advanced gas-insulated switchgear, and robust substations. These products are integral to a wide array of sectors, including energy and chemical industries, metal smelting, power grid infrastructures, industrial manufacturing, academic and research institutions, the medical and pharmaceutical fields, municipal commerce, water conservancy, hydropower, road traffic management, as well as commercial and residential developments.
Guided by the ethos of technological innovation and our 'smart manufacturing' philosophy, we are committed to attracting top technical talents to bolster our core competitiveness. Our mission is to deliver the most valuable services to our clients while building a premier industry brand. Since inception, we have charted a path of continuous advancement, evolving from a nascent enterprise to a paragon of excellence. Our relentless pursuit of innovation is coupled with a strategic business approach focused on quality for survival, market responsiveness, reputation-driven growth, and management-led efficiency. Upholding 'technology as the guide, standardized management, excellent quality, and customer satisfaction,' we are enhancing our market competitiveness, aiming to support China's power transmission and grid ambitions with greater speed, strength, and ambition. Integrity forms our bedrock, quality is our hallmark, service is our crown jewel, and customer satisfaction is our perpetual pursuit. Our goals are clear: pursuing excellence, fostering unending innovation, and crafting a brand synonymous with trust. Your trust fuels our journey. We extend heartfelt gratitude to our new and loyal clients for your unwavering support, as Senhang Technology eagerly anticipates collaborating with you to forge a brighter tomorrow.
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.