رله حفاظتی زیمنس مدل 7SA641.-…..-…6

DISTANCE PROTECTION RELAY 7SA64 UNITS WITH DETACHED OPERATOR UNIT, BACK-LIT GRAPHIC DISPLAY FOR SINGLE-LINE DIAGRAM, CONTROL KEYS, KEY-OPERATED SWITCH, FUNCTION KEYS, NUMERICAL KEYS PC-INTERFACE, EARTH-FAULT PROT. DIRECTIONAL, EARTHED NETWORKS EARTH-FAULT DETECTION, COMPENDSATED/ISOLATED NETWORKS