Hunan Hentg Power Electric Technology Co., Ltd.

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Oil Immersed Type Power Distribution Transformer Outdoor 250KVA 315KVA Three

China Oil Immersed Type Power Distribution Transformer Outdoor 250KVA 315KVA Three

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Oil Immersed Type Power Distribution Transformer Outdoor 250KVA 315KVA Three

MOQ： 2 sets
Price： CN¥12,820.50-14,957.25/sets
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Frequency	50Hz, 60Hz
Phase	Three
Coil Number	Two Windings, Multi Winding, Three Windings, Single Winding
application	power transformer
Coil Structure	Shell-Type Coil, layer coil, fully sealed construction, Disc Coil, round coil
Output Voltage	220V, 380V
Input Voltage	11kV, 10.5kV, 3kV, 12.47kV, 6.6kV
Type	Oil-Immersed Transformer, AUTOTRANSFORMER, Oil Filled Type
Winding Material	100% Copper/Aluminum
Cooling Method	ONAN ONAF
Customized	Accept
Capacity	250KVA 315KVA
Vector Group	Dyn11 / Yyn0
Usage	Power Transformer
Efficiency	≥98%
Rating Capacity	30-1600KVA
Installation	Indoor/Outdoor
Application	Power transmission
Poles	3
Second Voktage	0.4kv
Number Of Phases	Three Phases
Transformer Type	S11 Oil-immersed Transformer
Rated Voltage	6kV-500kV
Installation Method	Outdoor/Indoor
Noise Level	≤65dB
Place of Origin	Hunan, China
Brand Name	HENTG Power
Model Number	S13
Certification	CE

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Product Details
Company Details

Product Specification


Frequency	50Hz, 60Hz	Phase	Three
Coil Number	Two Windings, Multi Winding, Three Windings, Single Winding	application	power transformer
Coil Structure	Shell-Type Coil, layer coil, fully sealed construction, Disc Coil, round coil	Output Voltage	220V, 380V
Input Voltage	11kV, 10.5kV, 3kV, 12.47kV, 6.6kV	Type	Oil-Immersed Transformer, AUTOTRANSFORMER, Oil Filled Type
Winding Material	100% Copper/Aluminum	Cooling Method	ONAN ONAF
Customized	Accept	Capacity	250KVA 315KVA
Vector Group	Dyn11 / Yyn0	Usage	Power Transformer
Efficiency	≥98%	Rating Capacity	30-1600KVA
Installation	Indoor/Outdoor	Application	Power transmission
Poles	3	Second Voktage	0.4kv
Number Of Phases	Three Phases	Transformer Type	S11 Oil-immersed Transformer
Rated Voltage	6kV-500kV	Installation Method	Outdoor/Indoor
Noise Level	≤65dB	Place of Origin	Hunan, China
Brand Name	HENTG Power	Model Number	S13
Certification	CE
High Light	Oil Immersed Type Power Distribution Transformer ，Power Distribution Transformer Outdoor 250KVA ，315KVA Three Phase Distribution Transformer

HENTG POWER Three Phase Outdoor 250KVA 315KVA Oil Tester Step Down Power Distribution Transformer

Our oil-immersed distribution transformers range from 30kVA to 2500kVA, with voltage levels up to 35kV. They are widely used in power utilities, renewable energy, industrial facilities, railway systems, and urban infrastructure. Designed to IEC and ANSI standards, our transformers offer high efficiency, low losses, and long service life, suitable for both indoor and outdoor environments.

PRODUCTS DESCRIPTION

Type S13 oil-immersed distribution transformer is based on the original S11 distribution transformer, through the research and application of new materials and new technologies and the combination of independent innovation and technology introduction, through the optimization and innovative design of the core and coil structure, to reduce the no-load loss and noise purposes. Compared with the current national standard JB/T10088-2004, the noise level decreased by 20% on average, and the product performance level reached the domestic advanced level.
Ideal distribution equipment for urban and rural distribution network centers.

OUR ADVANTAGES

The Type S13 oil-immersed distribution transformer widely used in residential areas, commercial centers, industrial parks, and rural electrification projects.. Compared to S9 or S11, the S13 offers several improvements. Here are the key advantages : 1. Higher Energy Efficiency Lower no-load loss: The S13 series uses high-quality silicon steel sheets and optimized magnetic circuit designs, reducing no-load losses by 20–30% compared to S11 models. Lower load loss: Improved winding structure and materials reduce resistance and load losses, improving overall efficiency. 2. Improved Temperature Rise Performance Enhanced oil circulation and cooling systems help maintain stable operation under load.Better thermal management leads to longer insulation life . 3. Reduced Noise Levels Use of high-permeability silicon steel and precision manufacturing lowers magnetostriction, resulting in quieter operation.

4. Robust Mechanical Design Improved short-circuit resistance due to optimized winding structure and clamping. Core and coil assembly is more stable, reducing vibration and mechanical stress. 5. Longer Service Life Better materials and structural improvements lead to extended service life, often reaching 20–30 years under proper conditions.

PRODUCT PARAMENTERS

Rated capacity (KVA)	Vector Group	Voltage Combination					No-load loss	Load loss			No-load current	lmpedance
Rated capacity (KVA)	Vector Group			HV	Tapping range	LV	No-load loss		Dy	Yy	No-load current	lmpedance
30	Yyn0 / Dyn11	10 6.3 6	±5% ±2X2.5%	0.4	80	630	600	1.5	4.0
50										100	910	870	1.3
63										110	1090	1040	1.2
80										130	1310	1250	1.2
100										150	1580	1500	1.1
125										170	1890	1800	1.1
160										200	2310	2200	1.0
200										240	2730	2600	1.0
250										290	3200	3050	0.9
315										340	3830	3650	0.9
400										410	4520	4300	0.8
500										480	5410	5150	0.8
630									570	6200	6200	0.6	4.5
800									700	7500	7500	0.6
1000									830	10300	10300	0.6
1250									970	12000	12000	0.5
1600									1170	14500	14500	0.5
2000									1360	18300	18300	0.4	5.0
2500									1600	21200	21200	0.4	5.0

Step 1:

We will respond to your inquiry within 1 hour and recommend suitable transformer according to your needs. At the same time, we will provide you with reasonable quotations and payment terms.

We have a professional and independent drawing team and technical team, and we will confirm all the contents on the drawing with you within 7 days after payment. The drawing usually contains technical data, weight and parts list. If you have any questions, please click here to consult.

Step 2:

After designing the production drawing, the factory will prepare the stock, produce, and conduct quality inspection before shipment. If you have special accessory requirements, we can provide you with accessories. Our raw materials are strictly screened. In the quality inspection stage, we will provide you with the dual guarantee of QC report and test report to escort your products.

Step 3:

We have a professional team to guide the installation, and also support on-site installation. We will provide you with more than 2 years of warranty service. Welcome to join us and create a win-win situation. Click here to start our business now.

If you have any questions, welcome to click here for discussion !!!

WHY CHOOSE US?

✅ Own Factory, Direct Manufacturer
✅ 24h Quick Quotation
✅ Customization Available
✅ Over 60 Countries Exported
✅ Engineering Support Available

HENTG Power is an ISO9001 certified transformer manufacturer specializing in reliable, high-performance solutions for global power systems since 2011.

With an 100,000 m² factory, over 250 skilled workers, more than 30 senior engineers, and 10+ professional testing engineers, HENTG Power is dedicated to delivering high-quality transformer solutions with strong production capacity 20000 units/year.

Application Scenarios
⚡️Power Distribution Networks

Company Details

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Business Type:

Manufacturer,Exporter,Trading Company,Seller 
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Year Established:

2011 
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Total Annual:

50000000-100000000
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Employee Number:

200~250 
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Ecer Certification：

Verified Supplier 

HENTG Power is an ISO9001 certified transformer manufacturer specializing in reliable, high-performance solutions for global power systems since 2011. With an 100,000 m² factory, over 250 skilled workers, more than 30 senior engineers, and 10+ professional testing engineers, HENTG P... HENTG Power is an ISO9001 certified transformer manufacturer specializing in reliable, high-performance solutions for global power systems since 2011. With an 100,000 m² factory, over 250 skilled workers, more than 30 senior engineers, and 10+ professional testing engineers, HENTG P...

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Hunan Hentg Power Electric Technology Co., Ltd.
China Hunan Changsha，Room 908, Building D6, Zhongdian Software Park, Dongfanghong Street
https://www.hentgpower.com/

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