DIGITAL DIFFERENTIAL PROTECTION RELAY, FOR TRANSFORMER, GENERATORS, MOTOR, AND SHORT CABLE 4-LINE ALPHANUM.BACKLIT DISPLAY: 7 PROGRAMMABLE LEDS, NAVIGATION KEYS, FUNCTION KEYS, CASE 1/3 X 19", 3BI, 4BO, 1 WATCHDOG CONTACT, 7I, IEE, CURRENT TRANSFORMER: 5A 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 WITHOUT DIGSI 4/MODEM PORT BASIS MEASURED VALUES, FAULT RECORDING RESTRICTED EARTH FAULT LOW IMPEDANCE (87N) UMZ 1-PHASE FOR RESTRICTED EARTH FAULT HIGH IMPEDANCE (87N W/O RESISTOR AND VARISTOR) SENSITIVE OVERCURR.-TIME PROTECTION/TANK PROTECTION (64) Negative Sequence Protect. (46) BREAKER FAILURE PROTECT. (50BF) TRIP CIRCUIT SUPERVISION (74TC)