Cradle to Gate
Identity ID
2fbe3c8c-272a-4999-80d4-f9330adbbe38
Materials
Associated ID
e22e850d-37d6-401b-83cc-46f773450e3d
Included activities starts
Included activities ends
Description
The product represented by this dataset is a porcelain-housed silicon carbide valve-type surge arrester, namely a surge arrester whose valve plates use silicon carbide as the main material and whose insulating material adopts a ceramic housing, with a single-unit weight of about 1.918 kg, mainly composed of resistor plates (core body), a porcelain bushing and metal fittings such as screws, end caps, nuts and spring washers, manufactured through processes such as core body drying, insulation and assembly, and testing. The key upstream raw materials of this product are resistor plates, the porcelain bushing and screws, end caps, nuts, spring washers, etc., and the downstream is mainly applied to the overvoltage protection of power systems, new-energy power generation and rail transit equipment. 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 is the cradle-to-gate of the porcelain-coated silicon carbide valve-type arrester. The starting point is the input of raw materials and the end point is the finished porcelain-coated silicon carbide valve-type arrester leaving the factory. The main stages include core drying (resistor chips), insulation (porcelain sleeves, etc.), assembly (screws, end caps, nuts, flat spring washers, etc.) and testing.
Process Description
A surge arrester is an electrical device used to protect electrical equipment against high transient overvoltages and to limit the duration and magnitude of follow current. Surge arresters can be broadly classified as metal-oxide, valve-type, and expulsion-type arresters; by housing material, they may use silicone-rubber, porcelain, or composite housings. A porcelain-housed silicon-carbide valve-type surge arrester uses valve elements made primarily of silicon carbide and a porcelain insulating housing. It mainly consists of resistor elements (the core), a porcelain insulator, and metal fittings such as screws, end caps, nuts, and flat spring washers. It limits overvoltage and follow current, is supplied as a pedestal-mounted or cubicle-mounted electrical device, and is widely used for overvoltage protection in power systems, renewable-energy generation, and rail transit equipment.
Time period
2023
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of porcelain-jacketed silicon carbide valve-type arresters mainly includes processes such as core drying, insulation, assembly, and testing. After the outsourced core is dried, a porcelain jacket is placed on the outside for insulation, and metal accessories such as screws, end caps, nuts, and flat washers and spring washers are assembled. After passing the electrical performance test, the finished porcelain-jacketed silicon carbide valve-type arrester is produced.