devices detect an overload or short circuit in a power system component
and, if found, remove the component from the power system.
protective device coordination study is performed to:
proper protective devices (relays, circuit breakers and fuses).
protective device coordination study is performed either during the design
state of a new system, to verify the protective devices will operate correctly
in an existing system, or when the protective devices are not operating
protective relays and circuit breaker trip unit settings.
of the study are:
damage to the faulty components.
the damage to the faulty components
isolate the faulty component so a minimum non-faulty components are removed.