By a line isolation switch and voltage transformers, vacuum circuit breakers, current transformers, MOA and RC absorption protection devices and other components,
A line disconnecting switch and the voltage transformer, vacuum circuit breaker, current transformer, Zinc Oxide lightning arrester and resistance capacitance absorbing protection device,
Into line disconnector and vacuum circuit breakers, current transformers, voltage transformer, MOA and RC-snubber component, protection devices and other components,