Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a state-of-the-art fully sealed oil immersed power transformer brought to you by Chaotai Power. This cutting-edge transformer offers outstanding advantages such as minimal energy loss, reduced noise levels, and exceptional efficiency. These attributes ensure a remarkable energy-saving impact while simultaneously minimizing environmental pollution. Unlike conventional oil immersed transformers, this fully sealed design eliminates the need for an oil conservator. The oil volume adjustments are ingeniously managed by the flexible corrugated sheet of the oil tank. This isolation from the atmosphere significantly diminishes oil degradation and insulation aging, enhancing operational reliability and ensuring maintenance-free performance under normal conditions.
1. Power Capacity: Ranging from 25 to 2500KVA, compatible with 24KV, 30KV, 33KV, 35KV, 36KV, and tailored to meet specific customer requirements. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load options.
4. Tapping Range: Customizable at ±5%, 2x2.5%, and ±4x2.5%.
5. Frequency: Operates seamlessly at 50Hz or 60Hz.
6. Phases: Available in three-phase or single-phase configurations.
7. Connection Symbol: Options include Dyn11, Yyn0, or tailored upon request.
8. Short-Circuit Impedance: Adheres to standard impedance guidelines.
9. Altitude and Temperature Conditions: Engineered to perform optimally at altitudes not exceeding 1000m and ambient temperatures below 40°C. Should these conditions deviate, we are prepared to adjust parameters according to standard specifications.
We adjust parameters in accordance with standard if conditions deviate.
Power Capacity: Extends from 25KVA to an impressive 2500KVA.
Voltage Variants: Offering 10KY, 11KY, 13.8KY, 15KY, 17.5KY, 20KY, 22KY, 30KV, 33KV, 35KV, 36KV.
Voltage Level Options:
Voltage Regulation Type: Choose Off-circuit or opt for On-load regulation.
Tapping Range Variability: Precisely adjustable to ±5%, ±2x2.5%, and ±4x2.5%.
Operating Frequency: Compatible with both 50Hz and 60Hz.
Phase Configurations: Offered in both three-phase or single-phase models.
Connection Symbols: Choose from Dyn11, Yyn0, or customize per request.
Short-Circuit Impedance: Compliant with standard impedance requirements.
Environmental Conditions: Altitude up to 1000m, temperature below 40°C.
Should environmental parameters vary, standard-compliant adjustments will be made.
Our cutting-edge fully sealed oil immersed power transformer, developed by Chaotai Power, is your go-to solution for low energy loss, quiet operation, and high efficiency. Enjoy significant energy savings and reduced environmental impact with our innovative design.
In comparison to conventional transformers, our fully sealed model eliminates the oil conservator and utilizes the flexibility of a corrugated sheet oil tank to self-regulate oil volume. Shielded from air exposure, this transformer prolongs oil integrity and insulation lifespan, boosting operational reliability and eliminating the need for routine maintenance under standard operations.
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 distinguished high-tech enterprise, we boast an elite R&D, production, and service team, fortified by over 15 years of unparalleled industry expertise.
Our diverse array of cutting-edge products encompasses high-voltage solid-state soft starters, advanced capacitor cabinets, sophisticated high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and robust substations. These premier solutions are extensively deployed across a myriad of sectors, including the dynamic energy and chemical industries, precision metal smelting, expansive electric power grids, industrial manufacturing hubs, prestigious universities and research institutions, the vital medical and pharmaceutical sectors, thriving municipal commerce, essential water conservancy and hydropower projects, efficient road traffic systems, as well as commercial and residential spaces.
Rooted in a commitment to technological innovation and a visionary 'smart manufacturing' philosophy, we proactively integrate top-tier technical talents to significantly bolster our core competencies. Our mission is to deliver exceptional value to our clientele and to sculpt the finest brand in the industry. Since our inception, we've embarked on an extraordinary journey from inception to prominence, consistently advancing from mere existence to unparalleled excellence. Our strategy is anchored in continuous innovation and a modern business ethos: sustaining through superior quality, driven by market demands, thriving on a stellar reputation, and optimizing through meticulous management. We pledge to lead with technology, uphold standardized management, ensure superior quality, and achieve customer satisfaction, thereby enhancing our market competitiveness. Our unwavering commitment is to serve China's electric power and grid transmission and distribution sectors with unwavering speed, strength, and elevated objectives. Integrity remains our foundation, quality is our hallmark, service is our pinnacle, and customer satisfaction stands as our perpetual mission. We relentlessly pursue excellence, champion continuous innovation, and endeavor to cultivate a brand synonymous with trust. Your recognition fuels our ambition, and we extend our heartfelt gratitude to both new and loyal patrons for their unwavering support and loyalty. Senhang Technology eagerly anticipates forging a collaborative path with you, towards a harmonious and prosperous 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.