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S11 315kVA 10kV 400V China Manufactured Three-Phase Oil Cooled Type Distribution Transformer

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Number of Phase:Three Phase
Winding Type:Two Winding
Winding Material:Aluminum / Copper
Rated Capacity:315kVA
High Voltage:6/10/11kV
Low Voltage:0.4kV
Tapping Range:±2×2.5%
Impedance Voltage:4%
No-Load Loss:0.48kW
Load Loss (75°C):3.83/3.65kW
No-Load Current:0.9%
Frequency:50/60Hz
Connection Group:Yyn0 / Dyn11
Cooling Method:ONAN
Insulation Class:A
Climatic Class:C2
Environmental Class:E2
Operation Altitude:≤1000m
  • S11-M-315/10

  • SHENGTE

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Quantity:

Oil-immersed transformers rely on transformer oil to manage key insulation along with cooling needs. This sealed SHENGTE oil type transformer design keeps the transformer oil apart from outside air. In this way it guards internal parts against moisture and dirt. As a reliable distribution transformer, it gives steady voltage conversion and power supply for electrical distribution systems. The design fits well for a power distribution transformer, three phase transformer, or electrical power transformer. It brings safer operation, solid performance, and simple maintenance.


Features:

1. The high-voltage and low-voltage windings of oil-immersed transformers generally adopt a cylindrical structure to ensure a balanced distribution of ampere-turns. This winding design improves the mechanical strength and operational stability of the three phase transformer, making it suitable for reliable power transmission and distribution.

2. The coils and core of the oil type transformer are vacuum-dried to remove moisture. The transformer oil is then filtered and injected under vacuum, helping improve the insulation performance and long-term reliability of the electrical power transformer.

3. The oil tank of the distribution transformer uses corrugated plates to compensate for changes in oil volume caused by temperature fluctuations. This structure also improves heat dissipation and sealing performance, supporting the stable operation of the power distribution transformer.

S11-1

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.

S11 Advantage


S11 Structure


Product Parameters


Model Description S11

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

Drawing S11


Production Process


Production Process S11


Company Profile


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.

Company

Factory


Certifications


Certification


Project Cases


Case

Customer


Exhibition


Exhibition


Packaging & Shipping


Packing & Delivery


FAQ


Q1: What are oil-immersed transformers used for?

A: Oil-immersed transformers use transformer oil as both an insulation medium and a cooling medium. The S11-M-315/10 model is designed to convert 6kV, 10kV, or 11kV incoming power to 0.4kV, making it suitable for medium-voltage power distribution systems.


Q2: How does this oil type transformer dissipate heat?

A: This oil type transformer uses the ONAN cooling method, which means Oil Natural Air Natural cooling. The windings and core generate heat. This heat moves through the natural circulation of transformer oil. It then escapes through the corrugated oil tank into the surrounding air.


Q3: Is this 315kVA distribution transformer suitable for a 10kV network?

A: Yes. This distribution transformer comes with a capacity rating of 315kVA. It handles high-voltage inputs of 6kV, 10kV, or 11kV. It also delivers a low-voltage output of 0.4kV. The exact voltage setup needs confirmation based on the local grid along with project requirements.


Q4: What are the advantages of this power distribution transformer?

A: This power distribution transformer comes with a sealed corrugated oil tank. It has coils and core dried under vacuum. The process also uses filtered vacuum oil filling. In addition, it includes a low-loss silicon steel core. These aspects boost heat dissipation. They also enhance insulation reliability. They further strengthen mechanical strength. And they support long-term operating stability.


Q5: Is the S11-M-315/10 a three phase transformer?

A: Yes. The S11-M-315/10 is a three phase transformer with a two-winding structure. It supports Yyn0 or Dyn11 connection groups. It also works at 50Hz or 60Hz. These choices let it fit different electrical distribution system requirements.


Q6: Can this electrical power transformer be customized?

A: Yes. This electrical power transformer can be supplied with copper or aluminum windings. High-voltage ratings, connection groups, frequency, accessories, packaging, and other technical specifications can also be configured according to project requirements.


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Guangdong Shengte Electric Co., Ltd. is located in Danzao Town, Nanhai District, Foshan City.

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