IDMT characteristic of protection relay can be used for HV/LV electrical protection system also. 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.
Study of IDMT Overcurrent Relay
Inverse definite minimum time over current relay (IDMT)
IDMT RELAY || COMPLETE AND EASY EXPLANATION
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Relay settings Calculation | Relay trip co ordination | IDMT Relay setting Calculation
OVER-CURRENT RELAY SETTINGS CALCULATION FOR TRANSFORMER and Relay Coordination
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