Siemens Reyrolle 7SR57 Motor Protection Relay

Key Features & Benefits: ، Complete motor protection: short-circuit, overload, earth fault, abnormal conditions ، Enhanced monitoring: real-time measurement and fault logging ، Flexible application: LV and MV motor protection for industrial and utility setups ، User-friendly design: easy SCADA/automation integration ، Operational efficiency: reduces downtime, improves energy efficiency, extends motor life ، Ideal for industries in Mumbai and India: manufacturing plants, utilities, process industries, heavy machinery ، Application: ، Protects motors during all starting and running sequences ، Thermal algorithm optimized for motor characteristics ، Thermal monitoring via plant temperature sensors ، Standard Functionality: ، 14 Locked rotor protection ، 37/37G Undercurrent protection – phase/earth ، 46BC Broken conductor detection ، 46PR Phase-rotation reversal ، 46UB Phase unbalance ، 50BCL Break capacity limit ، 86 Lockout ، Optional Functionality (7SR57): ، 27/27Vx Undervoltage protection ، 32 Power protection ، 47 Sequence protection ، 55 Power factor ، 59/59Vx Overvoltage protection ، 81R Frequency protection – “df/dt“ ، Monitoring Functions: ، Primary, secondary, and phase sequence current & voltage ، Frequency, power, and energy ، Fault data, event, and records ، Motor start data log ، Communication: IEC 60870-5-103, MODBUS-RTU, DNP3, IEC 61850