This document specifies the technical requirements, inspection methods, inspection rules, packaging, transportation and storage of the silver-plated layer and silver-graphite composite coating of the electrical contacts of open isolating switches. This document is applicable to the verification test, inspection and acceptance of the silver-plated layer and silver-graphite composite coating of the electrical contacts of outdoor open isolating switches. The silver-plated layer and silver-graphite composite coating of the electrical contacts of the indoor open isolating switch can be implemented as a reference.
T/CEC 397-2020 history
2020T/CEC 397-2020 Specifications for silver plating of electrical contacts of open disconnector switches