Siemens 7SJ6226-5EB92 Protection Relay

Feature & Principle

It is Siemens SIPROTEC 4 series digital multifunctional feeder protection relay. It samples voltage and current signals through high-precision acquisition circuit, supports phase overcurrent, sensitive earth fault, directional overcurrent, breaker failure, overload, undervoltage and overvoltage protection. Built-in CFC free programmable logic, electrical measurement, event recording and fault waveform capture function. Equipped with IEC61850 Ethernet communication, also compatible with IEC60870-5-103 and Modbus, connect to SCADA system. Parameter configuration and fault analysis rely on DIGSI software. This model is discontinued, used for substation medium voltage feeder, motor and transformer backup protection maintenance replacement.

Specifications

Model: 7SJ6226-5EB92 Brand: Siemens Series: SIPROTEC 4 Core functions: Overcurrent, earth fault, directional protection, measurement, fault recording, CFC logic I/O: 11 binary inputs, 6 relay outputs Display: Backlit LCD 4×20 character Communication: IEC61850 Ethernet, IEC60870-5-103, Modbus Power supply: 24~250V AC/DC Installation: Panel flush mount Application: Medium voltage feeder, motor and transformer backup protection cabinet Certification: CE, IEC standard

Components & Diagnostics

Signal sampling unit, main CPU, LCD display panel, Ethernet communication circuit, status LED, relay output contacts. Common faults: communication offline, measurement drift, false tripping, parameter loss, power supply failure.

Product Brief

7SJ6226-5EB92 protection relay, Siemens SIPROTEC4 feeder overcurrent protection spare widely used for substation medium voltage cabinet overhaul and replacement.