Cradle to Gate
Identity ID
dae7f6d7-c476-4ed7-80c8-7e80f88d9382
Materials
Associated ID
09c43166-bc39-411f-b140-ff477991e3d5
Included activities starts
Included activities ends
Description
The product represented by this dataset is a porcelain-column SF6 circuit breaker, namely an SF6 circuit breaker using porcelain columns as the insulating medium between the live part and the earthed part, with a single-unit weight of about 1656.6 kg and an average nominal voltage of 127.5 kV, mainly composed of a casing (steel, stainless steel, plastics, etc.) and externally purchased contacts, operating mechanisms, auxiliary components, etc., manufactured through processes such as casing machining, assembly and testing. The key upstream raw materials of this product are steel, stainless steel, plastics and components such as contacts, operating mechanisms and auxiliary components, and the downstream is mainly applied to the control and protection of power systems and high- and extra-high-voltage power systems, outdoor substations, and transmission networks. As for the system boundary, the packaging of the product and its post-delivery transport, use, scrapping, recycling and final disposal, as well as infrastructure such as the manufacture of production equipment and plant construction, are 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.
Activity Description
The system boundary covers the porcelain-column SF6 circuit breaker from cradle to gate, starting with raw-material inputs and ending when the finished porcelain-column SF6 circuit breaker leaves the factory. The main stages, in sequence, are enclosure processing using steel, stainless steel, plastics, and other materials; assembly of contacts, the operating mechanism, auxiliary components, and other parts; and testing.
Process Description
Circuit breaker refers to a mechanical switching appliance that can connect, carry and break current under normal circuit conditions, and can also connect, carry and break current under specified abnormal circuits (such as short circuits) for a certain period of time. It is mainly divided into air circuit breakers, vacuum circuit breakers, SF6 circuit breakers and plastic case circuit breakers. Porcelain pillar type SF6 circuit breaker is a type of SF6 circuit breaker. It uses porcelain pillars as the insulating medium between the live part and the grounded part. It is mainly composed of shell, contacts, operating mechanism and auxiliary components. It has overload and short-circuit protection and other properties. It is in the form of porcelain pillar switchgear. It is widely used in the control and protection of high- and extra-high-voltage power systems, outdoor substations, and transmission networks. It is often used in outdoor occasions because of its good insulation performance and weather resistance.
Time period
2022
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of porcelain column SF6 circuit breakers mainly includes shell processing, assembly and testing. The casing (steel, stainless steel, plastic, etc.) is cleaned and anti-rust treated after cutting, drilling, bending, etc., and then assembled with purchased contacts, operating mechanisms, auxiliary components and other parts. After passing a series of tests such as temperature resistance, voltage resistance, insulation resistance and short-circuit current breaking, the finished porcelain column SF6 circuit breaker is obtained.