S11-M-30/10
SHENGTE
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This three phase oil immersed transformer relies on transformer oil for its main insulation and cooling needs. It delivers steady heat dissipation along with solid electrical performance. As an oil immersed distribution transformer, it uses a fully sealed structure. This setup separates the transformer oil from outside air. In turn it lowers oxidation and moisture entry. The approach turns the oil immersed power transformer into a safer choice that stays reliable over time. It also becomes simpler to maintain during long-term use. Projects needing a 10kV oil immersed transformer, 30kVA oil immersed transformer, or S11 oil immersed transformer gain a useful option for smooth power distribution. As a professional three phase transformer manufacturer, SHENGTE provides steady three phase transformer solutions for industrial, commercial, and utility applications.
Features:
1. Cylindrical Winding Structure: The high-voltage and low-voltage windings of this three phase oil immersed transformer generally adopt a cylindrical structure, helping ensure balanced ampere-turn distribution and stable electrical performance.
2. Vacuum Drying Process: The coil and core of the oil immersed power transformer are vacuum dried, while the transformer oil is filtered and injected through a vacuum process. This improves insulation strength and supports reliable operation for a 10kV oil immersed transformer or 30kVA oil immersed transformer.
3. Corrugated Oil Tank: The oil tank of the S11 oil immersed transformer uses corrugated plates, which can compensate for oil volume changes caused by temperature variation. This structure helps the oil immersed distribution transformer maintain safer and more stable operation.
4. Stable Power Distribution: This three phase transformer is designed for reliable power distribution in industrial, commercial, and utility applications. As a practical oil immersed distribution transformer, it helps deliver stable voltage transformation and long-term operating performance.

Our Advantages:
1. The spiral coil with longitudinal oil duct, has the performance of good heat dissipation, low magnetic leakage, high mechanical strength; And the reliable supporting structure can greatly improve the short circuit withstand ability.
2. The iron core adopts the stacked structure, it is composed of the silicon steel sheets with thickness less than 0.35mm and high magnetic conductivity, which can reduce the no-load loss and no-load current of the transformer.
3. The insulation materials have high heat resistance, which can withstand overvoltage and overcurrent during operation.
4.The transformer oil has low viscosity, good heat transfer performance and insulation performance, which can effectively protect the iron core and winding, reduce the aging of the insulation materials, and extend the service life of the transformer.
5. The corrugated oil tank is manufactured from high-quality cold-rolled steel plates on a dedicated production line, its surface is treated with deoiling, rust removal, and phosphating before being coated with a three proof (rain proof, moisture proof, and salt spray proof) paint, which can enhance operational reliability and durability, reduce the maintenance costs.
6. The sealing rings are made of the high-quality rubber materials, which can effectively slow the aging process, isolate the external air and prevent the transformer oil leakage.



| Model | Rated Capacity (KVA) | Rated Voltage (KV) | Connection Method | No-load Loss (W) | Load Loss (W) | No-load Current (%) | Short Circuit Impedance (%) | ||
| High Voltage | Voltage Regulation Range | Low Voltage | |||||||
| S11-M-30 | 30 | 6 6.3 10 10.5 11 | ±5% ±2×2.5% | 0.4 | Yyn0 Dyn11 | 100 | 630/600 | 1.5 | 4 |
S11-M-50 | 50 | 130 | 910/870 | 1.3 | 4 | ||||
S11-M-63 | 63 | 150 | 1090/1040 | 1.2 | 4 | ||||
S11-M-80 | 80 | 180 | 1310/1250 | 1.2 | 4 | ||||
S11-M-100 | 100 | 200 | 1580/1500 | 1.1 | 4 | ||||
S11-M-125 | 125 | 240 | 1890/1800 | 1.1 | 4 | ||||
S11-M-160 | 160 | 280 | 2310/2200 | 1 | 4 | ||||
S11-M-200 | 200 | 340 | 2730/2600 | 1 | 4 | ||||
S11-M-250 | 250 | 400 | 3200/3050 | 0.9 | 4 | ||||
S11-M-315 | 315 | 480 | 3830/3650 | 0.9 | 4 | ||||
S11-M-400 | 400 | 570 | 4520/4300 | 0.8 | 4 | ||||
S11-M-500 | 500 | 680 | 5410/5150 | 0.8 | 4 | ||||
S11-M-630 | 630 | 810 | 6200 | 0.6 | 4.5 | ||||
S11-M-800 | 800 | 980 | 7500 | 0.6 | 4.5 | ||||
S11-M-1000 | 1000 | 1150 | 10300 | 0.6 | 4.5 | ||||
S11-M-1250 | 1250 | 1360 | 12000 | 0.5 | 4.5 | ||||
S11-M-1600 | 1600 | 1640 | 14500 | 0.5 | 4.5 | ||||
S11-M-2000 | 2000 | 1940 | 18300 | 0.4 | 5 | ||||
S11-M-2500 | 2500 | 2290 | 21200 | 0.4 | 5 | ||||
S11-M-3150 | 3150 | 2730 | 24300 | 0.4 | 5 | ||||


Guangdong Shengte Electric Co., Ltd., based in Foshan, China, is a distinguished transformer manufacturer known for reliability and exceptional after-sales service. With over a decade of experience, we've provided high-quality, cost-efficient transformers for governmental and private sector projects worldwide, earning a reputation for excellence.
Our commitment to quality is demonstrated by meeting the rigorous standards of our German Power Utility clients, ensuring only the highest quality solutions.
Spanning 10,000 square meters, our Foshan facility is equipped with cutting-edge production and testing equipment, enabling us to offer customized solutions, including OEM and ODM services. Our product range includes oil-immersed transformers, resin cast dry-type transformers, pad mounted transformers, prefabricated substations, and more.
Certified by ILAC-MRA and CNAS, our IEC certificate underscores our dedication to international quality standards. Additionally, we hold ISO9001, CE, and Innovative Product Certifications, with active pursuit of the UL certificate to further demonstrate our commitment to global compliance.







Q1: Are you a manufacturer or trading company?
A1: Our factory covers an area of over 10000m2, we can produce 2000 more transformers each year.
Q2: Do you have the relevant certifications and test reports?
A2: Yes, we have ISO9001 and CE certification, and can provide the test reports according to IEC standard.
Q3: How long is the warranty period?
A3: It is 12 months.
Q4: Would you accept using customer's logo?
A4: Yes, we can provide OEM and ODM service.
Q5: What's the MOQ?
A5: It is 1 set.
Q6: What are the payment methods and terms?
A6: We accept T/T, Western Union, PayPal, etc. 30% advance payment before production, 70% balance payment before delivery.
Q7: How long is the delivery time?
A7: Generally it is 20-30 days, it depends on the order quantity.
Q8: What is the standard of package?
A8: Wooden case or special package according to customer's requirement.