Cradle to Gate
Identity ID
79b4e926-d917-432f-9b56-0e49049f80a3
Materials
Associated ID
e426bb88-20d3-48e1-8dae-0ec56ebda72c
Included activities starts
Included activities ends
Description
The product represented by this dataset is a silicone-rubber-housed metal-oxide surge arrester, namely a surge arrester whose valve plates use zinc oxide as the main material, doped with a small amount of other metal-oxide additives and formed by high-temperature roasting, and whose insulating material adopts silicone rubber, with a single-unit weight of about 2.39 kg, mainly composed of resistor plates (core body), silicone rubber, a silane coupling agent and metal fittings such as screws, end caps, nuts and spring washers, manufactured through processes such as core body drying, rubber coating, forming, cooling, trimming, assembly and testing. The key upstream raw materials of this product are resistor plates, silicone rubber, silane coupling agent, industrial alcohol 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 covers the silicone-rubber-housed metal-oxide surge arrester from cradle to gate, starting with raw-material inputs and ending when the finished arrester leaves the factory. The main stages, in sequence, are core drying (resistor elements), encapsulation with silicone rubber, a silane coupling agent, industrial alcohol, and other materials, molding, cooling, trimming, assembly with screws, end caps, nuts, flat spring washers, and other fittings, 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 silicone-rubber-housed metal-oxide surge arrester uses valve elements made primarily of zinc oxide with small amounts of other metal-oxide additives and sintered at high temperature, together with a silicone-rubber insulating housing. It mainly consists of resistor elements (the core), a silicone-rubber housing, 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 silicone rubber jacketed metal oxide arresters mainly includes processes such as core drying, silicone rubber wrapping, molding, cooling, trimming, assembly, and testing. After the outsourced core is dried, its surface is coated with a coupling agent, then wrapped with silicone rubber, molded, naturally cooled, and trimmed. Subsequently, metal accessories such as screws, end caps, nuts, and flat spring washers are assembled. After passing the electrical performance test, the finished silicone rubber coated metal oxide arrester is produced.