S9 Oil-Immersed Distribution Transformer for Industrial and Utility Power Systems 800kVA

Product Description

 

Product Description

Oil Immersed Non-excitation Tap-changing Transformer of 35kV and Below

Tap-changing Transformer of 35kV and Below
This kind of product is applied to power system of three-phase, 50Hz as well as 
35kV and below, it is the main transformer equipment of medium and small-sized 
transformer substation, supplies power distribution, power and illumination for 
the industry and agriculture.
The company introduces in domestic and overseas advanced technique, adopts 
the latest material and optimizes design, which enables the product structure 
more reasonable, and greatly improves the product electric strength, mechanical 
strength and heat-sinking capability. S9 series product has passed the short-circuit 
test prepared by Wuhan High Voltage Research Institute and also the test 
prepared by National Center for Quality Supervision & Test of Transformer.
 

Detailed Photos

Structural Features :
1.Iron core
The iron core is made of high quality cold rolled silicon steel sheet, adopts the kinds of types like full-bias multi-step seam, no punched hole, winding iron core, etc., besides, both stainless steel stay plate and epoxy glass belt are for clamping it.
2.Coil
High quality enameled wire that is made of oxygen free copper or paper wrapped flat copper wire is used as conductor, the coils is provided kinds of types such as drum type, spiral type, improved spiral type, continuous type and interleaved type. 3.Oil tank
The oil tank is of barrel type or shield type, the heat-sinking element is provided with corrugated plate or plated radiator. The transformer has not been equipped with trolley, but there is a base that accords with national standard rail gauge welded at the bottom of box for your convenience.
4.Safetyprotection device
According to national standard and users' requirements, the transformer may be equipped with following safety protection devices: pressure relief valve, gas relay, signal thermometer, oil purifier, oil conservator, oil sampling valve, etc.

 

Product Parameters

                             S9 Oil-Immersed Distribution Transformer - Product Description

The S9 series oil-immersed distribution transformer is manufactured with high-quality cold-rolled silicon steel and a proven oil-paper insulation system, ensuring reliable electrical performance and stable long-term operation. Compared with traditional models, the S9 transformer features reduced no-load loss and improved energy efficiency, making it suitable for cost-sensitive power distribution projects.

Using ONAN (oil-immersed natural cooling) design, the transformer offers effective heat dissipation, low operating noise, and strong overload capability. With a compact structure, easy maintenance, and long service life, S9 oil-immersed transformers are widely applied in industrial facilities, commercial buildings, rural power networks, and temporary power supply systems.

Thanks to its mature technology, dependable quality, and competitive price, the S9 series is an economical and practical choice for replacement projects and markets where high energy-efficiency standards are not mandatory.

Applications
    •    Industrial and manufacturing facilities
    •    Commercial and residential power distribution
    •    Rural and urban power grids
    •    Infrastructure and utility projects
    •    Temporary power supply systems
    •    Replacement of existing distribution transformers


Why Choose S9 Transformer
    •    Mature technology with extensive market application
    •    Reliable quality with stable long-term operation
    •    Lower initial investment compared to high-efficiency models
    •    Suitable for markets where ultra-high energy efficiency is not mandatory
    •    Ideal for cost-sensitive and export-oriented projects

 Oil-Immersed Distribution Transformer 

Certifications

  

 

Workshop

 

Packaging & Shipping

Packaging & Delivery
    •    Standard export wooden case or steel frame packaging
    •    Sea-worthy packing suitable for long-distance transportation
    •    Delivery time: 15-30 days depending on order quantity

Our Service

 

1,Quick response in before sales period help you got order

2,Excellent service in production time let you know each step we made

3,Reliable quality solve you aftersale headache

4,Long period quality waranty ensure you can buy without hesitate

5,OEM & Customization

OEM and customization services are available, including:
    •    Voltage and capacity customization
    •    Special tapping range
    •    Different standards and certifications
    •    Customized accessories and packaging

FAQ

1.Q: Are you manufacturer?
    A: Yes, we are manufacturer.

2.Q: Can I get guarantee of products?
    A: Yes, each product is 1 year quality warrantee under customer correct using the products

3.Q: How to buy it? What about the delivery?
    A: Please contact me by email or online, let me know your requirement, we will provide you professional solution. We have shipping agent can  choosing the cheapest and fastest delivery. FOB,CIF, C&F, FCA or EXW, each is available to us

4.Q: How can I pay you?
    A: T/T and L/C

5.Q: What about the production?
    A: Produce time is 2~4weeks  

6.Q: Could you offer some spare parts?
    A: Yes, no problem.

7.Q: Is the S9 transformer suitable for new projects?
   A: The S9 series is mainly recommended for replacement projects or markets with moderate energy-efficiency requirements.

8.Q: Can the transformer be customized?
   A: Yes, voltage, capacity, vector group, and standards can be customized.

9.Q: What standards do you follow?
   A: IEC, GB, or other international standards as required by customers.