Relay Protection Coordination Sensitivity & Selectivity using ETAP

Protection relay sensitivity and selectivity depends on the system maximum & minimum short circuit current.
IDMT characteristic of protection relay can be used for electrical protection system. IDMT (Inverse Definite Minimum Time) relay characteristic came into the picture in power system protection engineering when only Time grading or Current grading for relay protection co-ordination is not enough.
This video covers the basics and the advantages of IDMT i.e. Time/Current discrimination method in power system protection engineering.
This will take care of both the Time & Current discrimination method as well.
LSIG release with Electronic Trip Unit (ETU) can be used for the protection of LV system incomer, outgoing motor feeder or any other LV protection application. These are also known as Solid State protection system as called by some of the manufacturers.
Thermal magnetic protection can also be used for overcurrent and short circuit protection applications.
What is 50/51 code
Overload Protection vs Short Circuit Protection? |Overcurrent Explained
IDMT RELAY EASY EXPLANATION | why we use IDMT relay on feeder | What is IDMT over current relay

Protection Coordination with ACB LSIG Release for Transformer LV in ETAP
ETAP Software Tutorial | Performing Short Circuit and Protection Coordination Studies in ETAP
Device Coordination - Getting Started with ETAP Star
IDMT RELAY EASY EXPLANATION | why we use IDMT relay on feeder | What is IDMT over current relay
Coordination Studies, Real Examples

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