Cradle to Gate
Identity ID
62db181a-f36c-4ce4-bbb1-fd052878342c
Materials
Associated ID
18b9639e-e83c-4f81-9062-1d2713ce7bf7
Included activities starts
Included activities ends
Description
The product represented by this dataset is an oil-immersed current transformer, namely a current transformer using transformer oil as the insulating and cooling medium, with a single-unit weight of about 987.78 kg and a rated voltage of 110 kV, mainly composed of an iron core, a primary coil and secondary coil wound from enamelled wire, an oil tank and transformer oil, etc., manufactured through processes such as iron core wrapping, primary winding, secondary winding, oil tank fabrication and assembly. The key upstream raw materials of this product are the iron core, enamelled wire and transformer oil, etc., and the downstream is mainly applied to measurement and protection in industries such as power, industrial automation, construction and electric energy metering. As for the system boundary, infrastructure such as the manufacture of production equipment and plant construction is not included within the dataset boundary. In terms of data sources and data processing, the data inventory is taken from the actual situation of production enterprises, and energy such as electricity is calculated using China's average energy mix.
Activity Description
The system boundary is the cradle-to-gate of the oil-immersed current transformer. The starting point is the input of raw materials and the end point is the delivery of the finished oil-immersed current transformer from the factory. The main stages include core wrapping (iron core, etc.), primary winding (enameled wire, etc.), secondary winding, oil tank production (transformer oil, etc.) and assembly.
Process Description
A current transformer is a transformer in which the secondary current is actually proportional to the primary current under normal use conditions, and the phase difference is close to zero when the connection method is correct. According to the insulation material and operation mode, it can be divided into dry-type, oil-immersed, SF6, and electronic current transformers. An oil-immersed current transformer refers to a current transformer that uses transformer oil as the insulation and cooling medium. It is mainly composed of an iron core, a primary coil, a secondary coil (wound with enameled wire), an oil tank, and transformer oil. It is typically bench-mounted or cabinet-mounted and is widely used for measurement and protection in industries such as electric power, industrial automation, construction, and electric energy metering.
Time period
2023
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of oil-immersed current transformers mainly includes processes such as core wrapping, primary winding, secondary winding, oil tank production and assembly. The enameled wire is wound to form a primary coil and a secondary coil. After being assembled with the iron core into an assembly, the oil tank is made and the transformer oil is filled. After assembly, the finished oil-immersed current transformer is made.