Describe Safety Precautions When Working With Protective Relay Circuits Flashcards
1
Q
Protective relay settings can be altered without removing them from the panel. True or False?
A
True
2
Q
What is meant by the term “selective coordination” with reference to relay settings?
A
The ability to remove only the section of the system where the fault has occurred
3
Q
Switches on an overcurrent relay must be opened before the relay can be removed from its enclosure. The red-handled switch indicates you are opening what part of the circuit?
A
Trip circuit
4
Q
What precaution must always be observed before opening the secondary of a CT?
A
The CT must be short-circuited
