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Large Oil Immersed Electrical Power Transformer Up To 242kV


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Catalog

power transformer catalog.pdf

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