رله حفاظتی زیمنس مدل 7SA642.-…..-…1

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, MEASURED VALUES EXTENDED (MIN,MAX,MEAN)