Scope

This standard specifies general rules for product classification, technical requirements, test methods, and product information of traction electrical appliances This standard applies to traction appliances used on industrial and mining electric locomotives, electric vehicles, and electric transmission diesel locomotives (such as industrial and mining electric transmission thermal locomotives, electric transmission mining dump trucks, underground railway electric vehicles, light rail vehicles, and urban trams), as well as various current collection in the main circuit, auxiliary circuit, control and indication circuit of battery powered vehicles and electric industrial vehicles (such as forklifts, transport vehicles, tractors, stackers, etc.) Traction electrical appliances for isolation, protection, on-off, control, connection, adjustment, and adjustment (hereinafter referred to as electrical appliances) This standard also applies to electrical appliances installed on control trailers or distributed on trailers of multi power unit (train) vehicles Note: Currently, electronic components or components are usually included in electrical components. This standard does not apply to electronic devices, but it cannot be excluded from the scope of this standard because electronic devices are installed in electrical devices Electronic components should comply with corresponding standards