رله حفاظتی زیمنس مدل 7SA611.-…..-3GH5

DISTANCE PROTECTION RELAY 7SA61 OPERATOR PANEL WITH: 4-LINE BACK-LIT DISPLAY, FUNCTION KEYS,NUMERICAL KEYS, PC-INTERFACE, TRIPPING 3-POLE PICKUP I>, PICKUP V</I>/ PICKUP Z< (POLYGON),V</I>/PHI POWER SWING DETECTION, SYNCHRO-CHECK, BREAKER-FAILURE PROTECTION, VOLTAGE PROTECTION, EARTH-FAULT PROT. DIRECTIONAL FOR EARTHED NETWORKS OVERLOAD PROTECTION MEASURED VALUES EXTENDED (MIN,MAX,MEAN)