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Substation Transformer

Your Professional Substation Transformer Supplier

 

Gnee Steel (Tianjin) Co., Ltd. was established in Anyang, Henan, in 2008. Our main products include galvanized steel plates, cold-rolled steel plates, pre-coated steel plates, steel pipes, PPGI, PPGL, PPAL, color-coated steel plates, pre-processed steel plates, coil steel, galvanized processing parts, and other related products.

 

Certifications
We have successfully passed ISO, CE, and other system certifications. Additionally, our products have been tested and approved by SGS, TUV, BV, and other leading testing organizations.

 

Our Strengths
To date, Gnee Steel has made a total investment of over 60 million yuan. The company’s factory covers nearly 40,000 square meters, with a storage capacity of 250,000 tons. We are equipped with 5 advanced slitting units and 3 horizontal shearing units, all of which feature intelligent operation, automation, and high precision in processing.

 

Sales Market
We primarily export our products to four key regions: South America (35% of exports), Africa (25%), the Middle East (20%), and Southeast Asia (20%).

 

 
 

Substation Transformer

 

 

Electrical substation transformers are the most critical primary equipment in substations. Its main function is to increase or decrease the electric energy voltage of the power system to facilitate the reasonable transmission, distribution and use of electric energy. Substation transformers are divided into two categories according to the winding conductor material, copper windings and aluminum windings. Factory substations generally use double-winding transformers.

 

Product Description

 

01

Production Descriptions

Oil Immersed Power Transformer

02

Reference standards

IEC 60076

03

Capacity

5MVA

04

Voltage (HV)

66kV

05

Voltage (LV)

22kV

06

Applied in

Power Plant

07

Impedance %

8%

08

Connections (Vector Group)

Dyn11/Yyn0

09

Frequency

50Hz/60Hz

10

Core materials

Silicon Steel

11

Winding materials

Copper/Aluminum

12

Noise Level (dBA)

As per IEC Specifications

13

Cooling method

ONAN/ONAF

14

Optional Accessories

Temperature sensor

15

Temperature control

16

Cooling fans

17

Skid-type underbase

18

Transformer wheels

19

Current transformer

20

Protective Enclosure(IP2X)

 

Substation Transformer Ratings

Standard

Ratings

Standard

Ratings

IEEE C57

500kVA

IEEE C57

3/4MVA

AS/NZS 60076

750kVA

IEEE C57

5MVA

AS/NZS 60076

1000kVA

CSA C88

5/6.667MVA

IEEE C57

1500kVA

ANSI C57

2500/3125kVA

CSA C88

1500/2000kVA

IEEE C57

4500/5200 kVA

IEEE C57

2000kVA

IEC60076

6300kVA

CSA C88

2500kVA

IEC60076

6800kVA

IEC/AS/NZS 60076

3000kVA

CSA C88

7500kVA

CSA

3000/4000kVA

IEEE C57

10000kVA

IEEE C57

3000/3750kVA

IEEE C57

10000/12500kVA

IEEE C57

4000kVA

IEC60076

12000kVA

 

Parts of an electrical substation
 

Transformer: It is a static electrical machine that serves to increase or decrease electricity in an AC electrical circuit, while maintaining a constant frequency and power.


Circuit breaker: It interrupts and reestablishes the continuity of an electric circuit. Such interruption is made with load or short-circuit current.


Recloser: It is an electromechanical part that interrupts the current when there is an excess of electricity and acts when a fault is generated in the circuit. Reclosers are designed to operate with 3 closing operations and 4 openings with an interval between them.


Blade fuses: They are connection and disconnection elements of electric circuits with a double function. On the one hand, as a blade disconnect, it switches on and off. On the other hand, it acts as a fuse protection element and is used when an overcurrent is registered.


Disconnect switches and test switches: They serve to physically disconnect an electric circuit, so they usually operate without charge. These switches work mechanically and also manually.

4300KVA Prefabricated Compact Substation Transformer

 

4300KVA Prefabricated Compact Substation Transformer

Lightning arresters: They are responsible for keeping ionized rays away. When there is a surge of a certain magnitude, lightning arresters form an electronic arc that makes the current discharge on the ground and not on people or equipment and installations.


Instrument transformers: They are apparatuses responsible for measuring the electric current. There are two types: current transformers (CT), to change the value of the current, and potential transformers (PT), to transform the voltage values without taking the current into account. Both values are used in real time for measuring, control, and protection instruments that require current or voltage signals.


Junction boxes: They are the connection terminals per phase that allow us to make derivations and to reach specific areas.


Condensers: They allow us to conserve the electricity that is produced in an electric field. Through two conductors separated by insulating material, energy is temporarily stored.

 

Testing and Certification

Thorough testing ensures the reliability and safety of substation transformers:

 
 

Factory Routine Tests

Conducted before shipping to verify parameters such as resistance, ratio, polarity, no-load losses, and impedance.

 
 
 

Optional Tests

Additional tests like temperature rise and lightning impulse tests are available upon request, ensuring compliance with specific project needs or regulatory requirements (e.g., CSA certification).

 
 
 

Third-Party Inspection

External agencies may conduct inspections to validate quality and adherence to standards.

 

 

How Does a Transformer Substation Work?

A substation operates through a coordinated process:

Voltage Adjustment

Transformers use electromagnetic induction to convert voltages. High-voltage electricity from transmission lines is stepped down for local distribution.

Switching and Protection

Circuit breakers and isolators control power flow and disconnect faulty lines to prevent damage.

Monitoring and Control

Sensors and SCADA (Supervisory Control and Data Acquisition) systems monitor parameters like voltage, current, and temperature, enabling real-time adjustments.

Power Distribution

Electricity is routed through buses and feeders to different areas based on demand.

 

 

 

Designing request of transformer substation

A transformer station should, when designed, satisfy the following requirements:


1. Ensuring power quality: Determine the station's load center and location so that the transformer substation is located in the center of the load to save lines, limit voltage drop, and loss of power network.


2. Investment costs are not wasted.


3. Safety for people and equipment: Ensure industry aesthetics near the power grid and ensure the line's electricity safety corridor. Besides, to ensure local people's safety where the transformer substation is located, the transformer substation location will not affect the factory and other works.


4. When designed, the transformer station must have a structure convenient for operation and repair.

Prefabricated Compact Substation Transformer

 

Certificates

 

 

productcate-1-1

 

FAQ

 

Q: Are you a Manufacturer, factory or Trading company ?

A: Yes, We are engaging in the research and development, production and operation of transformer for over 60 years.

Q: What's your warranty terms?

A: We offer 12 months warranty time.

Q: Production Time?

A: 30 to 45 days or depending on order requirements.

Q: What's your payment terms?

A: T/T , L/C or negotiation.

Q: How do you conduct quality control in your factory?

A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.

Q: Do you have the products in stock?

A: Normally no. All our products produce depending to your order quantity.

We're professional substation transformer manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy cheap substation transformer for sale here and get free sample from our factory. For price consultation, contact us.

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