رله حفاظتی زیمنس مدل 7SA642.-…..-…2

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 DETECTION, COMPENSATED/ISOLATED NETWORKS