Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a fully sealed oil-immersed power transformer crafted by Chaotai Power. This innovative transformer boasts low loss, minimal noise, and exceptional efficiency, delivering significant energy savings while minimizing pollution. Unlike conventional oil-immersed models, our fully sealed design eliminates the oil conservator. Instead, the oil volume adjustments are seamlessly managed by the elasticity of the corrugated oil tank's sheets. This design innovation isolates the transformer from air, thereby preventing oil deterioration and insulation aging, enhancing operational reliability, and eliminating the need for maintenance during standard operations.
1. Power Capacity: 25-2500KVA, 24KV, 30KV, 33KV, 35KV, 36KV, and customizable as per customer requirements. 2. Voltage Level: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Available in Off-circuit or On-load configurations.
4. Tapping Range: ±5%, ±2x2.5%, ±4x2.5%
5. Frequency: Compatible with both 50Hz and 60Hz
6. Phases: Available in Three or Single phase configurations
7. Connection Symbol: Options include Dyn11, Yyn0, or tailored to customer specifications
8. Short-circuit Impedance: Complies with Standard Impedance requirements
9. Altitude should not exceed 1000m, and ambient temperature should not surpass 40°C. If these conditions are not met,
we will adjust the parameters in accordance with the standard.
Power Capacity: Ranges from 25KVA to 2500KVA
Voltage Levels: Includes 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level:
Type of Voltage Regulation: Options include Off-circuit or On-load
Tapping Range: Offers ±5%, ±2x2.5%, ±4x2.5%
Frequency: Available in 50Hz or 60Hz
Phases: Choose either Three or Single phase
Connection Symbol: Select from Dyn11, Yyn0, or customize as requested
Short-circuit Impedance: Standard Impedance applies
Altitude should not exceed 1000m, and ambient temperature should not surpass 40°C
If conditions are unmet, parameters will be modulated in adherence to the standard.
Chaotai Power's fully sealed oil-immersed power transformer excels with low loss, reduced noise, and high efficiency, achieving remarkable energy savings and mitigating pollution effectively.
This cutting-edge fully sealed transformer eliminates the need for an oil conservator, automatically adjusting oil volume via the corrugated tank's elasticity. Its isolation from air curtails oil deterioration and insulation aging, bolstering reliability and negating maintenance during ordinary use.
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 distinguished high-tech enterprise, passionately dedicated to the realm of electrical integration. Bolstered by a proficient R&D, production, and service team, we proudly bring over 15 years of industry expertise to the table.
Our stellar product lineup features high-voltage solid-state soft starters, capacitor cabinets, sophisticated high and low voltage switchgear, innovative gas-insulated switchgear, and state-of-the-art substations. These products are prominently utilized across diverse sectors, including energy and chemicals, metal smelting, electric power grids, industrial manufacturing, academia, medical and pharmaceutical fields, municipal commerce, water conservancy, hydropower, road traffic, as well as commercial and residential domains.
We uphold a relentless commitment to technological innovation under the visionary mantra of 'smart manufacturing.' With a focus on nurturing high-caliber technical talent, we aim to fortify our core competencies and deliver unparalleled value to our customers, striving to establish the pinnacle brand within our industry. Since inception, our journey has been one of relentless progress, evolving from a nascent entity to an exemplar of excellence. Embracing innovation, our modern business model champions quality as the cornerstone of survival, market receptiveness as a driver of reputation, and efficiency through adept management. Guided by the principles of 'technology leadership, standardized management, superior quality, and customer satisfaction,' we elevate our market competitiveness, striving to excel in China’s electric power transmission and distribution sectors with bolder, faster, and loftier ambitions. Integrity remains our foundation, quality our greatest asset, service our utmost priority, and customer satisfaction our perpetual commitment. With an unwavering pursuit of excellence and continuous innovation, we aim to craft a brand of unshakable trust. Your recognition fuels our endeavors. We extend heartfelt gratitude to our esteemed customers, both new and longstanding, for their cherished support and trust. Together with Senhang Technology, let us forge a brighter, more 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.