Engineering, 25.03.2021 14:20 fatboi82
Show at the following figure how directional relays can be used to protect the system as a time interval of 0.2 seconds. When a fault occurs as indicated in the point (A), mention with explanation the main and backup relays that should be used in the following cases: 1) When using the time gradient principle in normal over-current relays. 2) When using directional over-current relays with time gradient.
Answers: 3
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Show at the following figure how directional relays can be used to protect the system as a time inte...
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