Siemens 7SK80 Siprotec Compact Motor Protection Numerical Relay

4 current transformer inputs ، 0 / 3 voltage transformer inputs ، 3 / 7 binary inputs (thresholds configurable via software) ، 5 / 8 binary outputs (2 changeover) ، 0 / 5 RTD (resistance temperature detector) inputs ، 1 life contact ، Pluggable current and voltage terminals ، Functions: ، Definite and inverse time-overcurrent protection (phase/ground) (50, 50N, 51, 51N) ، Directional time-overcurrent protection (ground) (67N) ، Directional overcurrent protection (ground) (definite/inverse) (67Ns, 50Ns) ، Displacement voltage, zero-sequence voltage (59N) ، Trip-circuit supervision (74TC) ، Undercurrent monitoring (37) ، Temperature monitoring (38) ، Thermal overload protection (49) ، Load jam protection (51M) ، Locked rotor protection (14) ، Intermittent ground fault protection ، Directional intermittent ground fault protection (67Ns) ، Overcurrent protection, voltage-controlled (51V) ، Restart inhibit (66/86) ، Undervoltage/overvoltage protection (27/59) ، Forward-power, reverse-power protection (32) ، Power factor (55) ، Overfrequency/underfrequency protection (81O/U) ، Circuit-breaker failure protection (50BF) ، Phase-balance current protection (negative-sequence protection) (46) ، Unbalance-voltage protection and/or phase-sequence monitoring (47) ، Start-time supervision (48) ، Lockout (86) ، Rate-of-frequency-change protection (81R) ، Rate-of-voltage-change protection (27R/59R) ، Applications: ، Motor Protection: Designed for protecting induction-type asynchronous motors. ، Transformer Protection: Offers backup protection for transformer differential protection, with effective inrush suppression. ، Distribution Systems: Ideal for use in distribution systems and industrial environments, requiring minimal space.