Cradle to Gate
Identity ID
f77e9cd3-189d-4033-a165-21b00a954800
Materials
Associated ID
95691f43-ac0d-4eef-8b70-09532f6b2199
Included activities starts
Included activities ends
Description
The product represented by this dataset is an SF6 current transformer, namely a current transformer using SF6 gas as the insulating medium, with a single-unit weight of about 857.44 kg and a rated voltage of 110 kV, mainly composed of an iron core, a primary coil and secondary coil wound from enamelled wire and SF6 gas, etc., manufactured through processes such as iron core wrapping, primary winding, secondary winding, insulation and assembly. The key upstream raw materials of this product are the iron core, enamelled wire and SF6 gas, 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 formed by merging data from multiple sources, 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 SF6 current transformer. The starting point is the input of raw materials and the end point is the delivery of the finished SF6 current transformer from the factory. The main stages include core wrapping (iron core, etc.), primary winding (enameled wire, etc.), secondary winding, insulation (SF6, 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 type, SF6 and electronic current transformer. SF6 current transformer refers to a current transformer that uses SF6 gas as the insulating medium. It is mainly composed of an iron core, a primary coil and a secondary coil (wound by enameled wire), and SF6 gas. It is in the form of a bench-mounted or cabinet-mounted transformer. It is widely used in measurement and protection in industries such as electric power, industrial automation, construction, and electric energy measurement.
Time period
2023
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of SF6 current transformers mainly includes core wrapping, primary winding, secondary winding, insulation 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, it is treated with SF6 insulation and assembled with the body to make a finished SF6 current transformer.