7SJ6225-5EB90-1FE0 SIEMENS - REF

The 7SJ6225-5EB90-1FE0 is a versatile multifunction protective relay designed for comprehensive power system protection and monitoring. It features a user-friendly backlit text display with 4 lines of 20 characters each, along with 7 programmable LEDs for clear indication of relay status and events. Housed in a compact 1/3 19" case, this relay is suitable for flush mounting and utilizes screw terminals for secure and reliable connections, accommodating both direct wiring and ring lugs. The relay is equipped with 11 binary inputs, 6 binary outputs, and a watchdog contact, providing extensive control and monitoring capabilities. It supports a wide range of power supply voltages, accepting both DC (110V to 250V) and AC (115V to 230V), with a triggering level of DC 88V for binary inputs. Communication options include a system port on the rear of the device and Port B IEC 61850, offering 100 Mbit Ethernet connectivity with an integrated switch and optical double LC-connector. This relay offers comprehensive metering and fault recording functionality, including time overcurrent (TOC) and voltage/frequency (V/F) protection. Protection functions encompass phase overcurrent (50/51), ground overcurrent (50N/51N), overload protection (49), trip circuit supervision (74TC), breaker failure protection (50BF), and various voltage and frequency protection elements (27, 59, 81). Additional features include cold load pickup, inrush blocking, negative sequence protection (46), and a lockout function (86).