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Product Description
Power Transformer General:
• The main power transformer is a device used to change the AC voltage using electromagnetic induction means. It's a critical component in power generation and distribution. It is an electrical device that is used to transfer electrical energy from one circuit to another through electromagnetic induction. They are designed to handle high voltages and currents and are used to step up or step down the voltage of electricity to the desired level. The main power transformer in a substation is to step up or step down the voltage of the electric power, depending on the requirements of the power system. When electricity is generated at the power plant, it is produced at a relatively low voltage, usually ranging from 2.4 kV to 33 kV. However, the power grid requires high-voltage electricity to reduce the power loss and improve the efficiency of transmission.It steps up the voltage of the electricity before it is transmitted over long distances through the transmission lines. The transformer increases the voltage to a level that is suitable for efficient transmission and reduces the current, which in turn reduces the amount of power loss. At the receiving end of the transmission line, another transformer steps down the voltage to a level that is suitable for distribution to households and businesses.
Power Transformer Function:
• Voltage conversion, current conversion, impedance transformation, isolation, and regulation, act as a physical and electrical barrier between different voltage levels in the power grid, providing insulation and protection to the substation and the transmission lines. They also regulate the voltage and provide reactive power compensation to maintain power quality and stability in the power system. Overall, main power transformers play a critical role in the efficient and reliable operation of the power grid.
Power Transformer Specifications:
Scope | |
Rated power: up to 300mva | Primary voltage up to 242kv |
Secondary voltages up to 69kv | Cooling type: ONAN/ONAF/OFAF/OFWF |
Standard:IEEE;ANSI;CSA | |
Field:substations, solar projects, and other energy-intensive operations, etc. | |
Service Condition | |
Suitable for both indoor or outdoor | |
Air temperature: Maximum temperature: +40℃; Minimum temperature:-25℃ | |
Humidity: Monthly average humidity 95%; Daily average humidity 90% | |
Altitude above sea level: Maximum installation altitude: 2000m | |
Ambient air not apparently polluted by corrosive and flammable gas, vapor etc. | |
No frequent violent shake | |
Application | |
Distribution line | Transmission line project |
Aux transformers | Power generation projects |
Railway engineering | Electrical power engineering for large enterprises |
Accessories and Features | |
Extra creep bushing | Surge arrester bracket |
Drain/sampling valve | NON-PCB insulating oil |
Temperature gauge | Liquid level gauge |
Pressure vacuum gauge | Nonconductive transformer cover |
Laser engraved aluminum nameplate | |
Special designs conforming to international specifications | |
Externally-operable multiple voltage switches for safe operation | |
Externally-operable tap changer switches for safe operation | |
Dual voltage primary complete with externally operated voltage switch | |
Transport Packaging | |
Power transformers are packaged in 20-frame container or one 40 HQ container | |
The transformer body is well fixed with steel wire rope and sleeper, and equipped with an impact recorder | |
The radiator, oil conservator, and other accessories are packed in wooden cases | |
Avoid collisions and keep the shape of the transformer intact | |
Avoid corrosion, rust, etc. caused by environmental factors |
Power Transformer Standards Compliant:
• ANSI/ IEEE C57.12.00 standards
• IEC 60076 Power Transformers
• AS NZS 60076 Power Transformers
• ISO 9001Power Transformers
• CSAC88-16 Power Transformers
• GOST R 52719-2007 Power transformers. General specifications
• GB 6451 Technical Specifications And Requirements For Oil-Immersed Power Transformers
• EN60076 Poer Transformer
Power Transformer Features:
• Save construction cost
• compact structure
• Reasonable winding arrangement
• Complete cooling system
• Reliable Insulation material
• Good dynamic stability