رله حفاظتی زیمنس مدل 7SA611.-…..-2DD7

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 BREAKER-FAILURE PROTECTION, VOLTAGE PROTECTION, EARTH-FAULT PROT. DIRECTIONAL FOR EARTHED NETWORKS EARTH-FAULT DETECTION FOR COMPENSATED/ISOLATED NETWORKS OVERLAOD PROTECTION MEASURED VALUES EXTENDED (MIN,MAX,MEAN)