7SA6121-4MB21-1PR4

Siemens

DISTANCE PROTECTION RELAY 7SA61 OPERATOR PANEL WITH: 4-LINE BACK-LIT DISPLAY. FUNCTION KEYS. NUMERICAL KEYS. PC-INTERFACE. EARTH-FAULT PROTECTION DIRECTIONAL. EARTHED NETWORKS MEASURING INPUT (4 X V. 4 X I) IPH = 1A. IE = 1A (MIN = 0.05A) AUXILIARY VOLTAGE: 60 TO 125V DC. BINARY INPUT THRESHOLD 19V HOUSING WIDTH 1/1 19". 14 LEDs 21 BINARY/INDICATION INPUTS. 12 SIGNAL/COMMAND OUTPUTS. 8 FAST RELAYS. 5 HIGH-SPEED TRIP OUTPUTS. FLUSH MOUNTING HOUSING/SCREW TERMINALS REGION WORLD. LANGUAGE ENGLISH (SELECTABLE) PORT B: SYSTEM PORT. IEC PROTOCOL. ELECTRIC RS-485 PORT C: DIGSI/MODEM. ELELCTRIC RS-232. TRIPPING 3-POLE. BCD OUTPUT FAULT LOCATION. DISTANCE PROTECTION STARTING: Z< (POLYGON). V/PHI. POWER SWING DETECTION. PARALLEL LINE COMPENSATION. AUTO-RECLOSURE. SYNCHRO-CHECK. BREAKER-FAILURE PROTECTION. VOLTAGE PROTECTION V>/V<.