DIGITAL DIFFERENTIAL PROTECTION RELAY, FOR TRANSFORMER, GENERATORS, MOTOR AND SHORT CABLE 4-LINE ALPHANUM.BACKLIT DISPLAY 7 PROGRAMMABLE LED, NAVIGATION KEYS, FUNCTION KEYS, CASE 1/3 X 19", 3BI, 4BO, 1 WATCHDOG CONTACT, 7I, IEE, CURRENT TRANSFORMER: 1A SUPPLY VOLTAGE:DC 110V TO 250V, AC 115V/230V, TRIGGER LEVEL BINARY INPUT 88V FLUSH MOUNTING CASE, SCREW TERMINALS (DIRECT WIRING/RING LUGS) REGION WORLD, 50/60HZ, IEC/ANSI, LANGUAGE ENGLISH (LANGUAGE CHANGEABLE) NO SYSTEM PORT DIGSI 4/MODEM PORT (ON REAR OF DEVICE) PORT C DIGSI 4, BROWSER OR THERMO-BOX, ELECTRICAL RS485 BASIS MEASURED VALUES, FAULT RECORDING FUNCTIONALITY: DIFFERENTIAL PROTECTION, BASIC FUNCTION, DIFFERENTIAL PROTECTION TRANSFORMER, GENERATOR, MOTOR, BUSBAR, (87 T G M L), OVERLOAD PROTECTION FOR ONE PAGE (49), LOCK OUT (86), TIME OVERCURR.PROTECT.TOC PHASE (50/51): I>, I>>, IP (INRUSH BLOCKING) TIME OVERCURR.PROTECT.TOC 3I0 (50/51): 3I0>, 3I0>>, 3I0P (INRUSH BLOCKING) TIME OVERCURR.PROTECT.TOC EARTH (50/51): IE>, IEE>>, IEP (INRUSH BLOCKING)