ElecPwrPEOct11
Well-known member
Hi all,
I know what relays are, but am not familiar with the different types or their common uses. This was brought to light in a Complex Imaginary question (variation 1, question #68) that mentions the following types: impedance, differential, overcurrent, and voltage. It says that impedance relays are useful in setting up zones of protection in transmission applications. I had incorrectly guessed that overcurrent relays were the correct device to use in this setting.
I searched online but couldn't find a good summary of these types of relays and their common uses. Wikipedia doesn't have good info and Blackburn is way too detailed. Any help is very appreciated. Thanks!
I know what relays are, but am not familiar with the different types or their common uses. This was brought to light in a Complex Imaginary question (variation 1, question #68) that mentions the following types: impedance, differential, overcurrent, and voltage. It says that impedance relays are useful in setting up zones of protection in transmission applications. I had incorrectly guessed that overcurrent relays were the correct device to use in this setting.
I searched online but couldn't find a good summary of these types of relays and their common uses. Wikipedia doesn't have good info and Blackburn is way too detailed. Any help is very appreciated. Thanks!