DIGITAL DIFFERENTIAL PROTECTION RELAY,

FOR TRANSFORMER, GENERATORS, MOTOR, SMALL BUSBARS AND SHORT CABLE, BACKLIT GRAPHIC DISPLAY, 14 PROGRAMMABLE LED, NAVIGATION KEYS, FUNCTION KEYS, CONTROL KEYS, NUMBER BLOCK, CASE 1/1 X 19", 21BI, 24BO, 1 WATCHDOG CONTACT, 11I, IEE, 4 VOLTAGE INPUTS (1 X 3-PHASE + 1 X 1-PHASE) 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, IEC/ANSI, LANGUAGE ENGLISH (LANGUAGE CHANGEABLE) SYSTEM PORT (ON REAR OF DEVICE) PORT B PROFIBUS DP SLAVE, RS485 DIGSI 4/MODEM PORT (ON REAR OF DEVICE) PORT C DIGSI 4, BROWSER OR THERMO-BOX, ELECTRICAL RS485 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 PROT./ TANK PROTECTION (64) NEGATIVE SEQUENCE PROTECT. (46) BREAKER FAILURE PROTECT. (50BF) TRIP CIRCUIT SUPERVISION (74TC) ADDITIONAL FUNCTION: VOLTAGE MEASUREMENT AND OVEREXCITATION PROTECTION WITHOUT ADDITIONAL FUNCTIONS