Siemens 7SJ81 Siprotec Compact Overcurrent Protection

Inputs for low-power CTs and VTs according to IEC 61869-6 ، Removable terminal blocks ، Programmable binary input thresholds (3 stages) ، 9 programmable function keys ، 6-line display ، Exchangeable buffer battery (front) ، USB front port ، 2 additional communication ports ، Integrated switch for optical Ethernet rings (cost-effective and redundant) ، Ethernet redundancy protocols (RSTP, PRP, HSR) ، IEC 61850 GOOSE for relay-to-relay communication via Ethernet ، Millisecond-accurate time synchronization through SNTP ، Programmable logic with CFC (user-defined PLC logic) ، Energy metering values (Wp, Wg) ، Trip circuit supervision and fuse failure monitor ، Circuit breaker wear monitoring ، 8 oscillographic fault records ، Suitable for use in networks with grounded, low-resistance, isolated, or compensated neutral points.