TThe more detailed factors for transmission line protection directly
address dependability and security for a specific application. The
protection system selected should provide redundancy to limit
the impact of device failure, and backup protection to ensure
dependability. Reclosing may be applied to keep the line in service
for temporary faults, such as lightning strikes. The maximum load
current level will impact the sensitivity of protection functions,
and may require adjustment to protection functions settings
during certain operating circumstances. Single-pole tripping
applications impact the performance requirements of distance
elements, differential elements, and communications schemes.