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  • Calculation of Relay Protection Settings in Lithuania

    Calculation of Relay Protection Settings in Lithuania

    Use this Protection Relay Setting Calculator to calculate pickup current, time multiplier settings (TMS), operating time, coordination time interval (CTI), and plug setting multiplier (PSM) using fault current, CT ratio, and IEC 60255 curve parameters. Protection Settings Calculations for Lines i. Two types of characteristics are offered for application as follows: Quadrilateral characteristics Mho characteristics. of protective relays in terms of protecting high voltage lines. At the beginn ng of the article it is drawn up process to protect power lines. Consequently, it is shown the method of calculation for a particular power line a d performed the calculation for setting the distance protection. TSM – Time. Should relay 1 or its circuit breaker fail to operate, relay 2 will be allowed to operate.

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