The 7SR5711 Motor Protection relay offers comprehensive protection for motors, swiftly detecting and responding to faults like overcurrent, overload, and phase imbalances. With advanced algorithms and configurable settings, it ensures system safety and reliability in various industrial applications.
• 14 Locked rotor protection
• 37/37G Undercurrent protection
• 46BC Broken conductor detection
• 46PR Phase-rotation reversal
• 46UB Phase unbalance
• 48 Starting-time supervision
• 49R Rotor thermal overload protection
• 49TS Temperature sensor supervision
• 50/50N/50G Instantaneous overcurrent
• 50AFD Arc Flash Detection
• 50/50G/50N Instantaneous overcurrent/EF
• 50AFD Arc flash detection 12
• 50BCL Break capacity limit
• 51/51G/51N Time delayed overcurrent/EF
• 66 Number of starts
• 81B Backspin monitor
• 87GH REF protection – high-impedance
• 27/27Vx Undervoltage protection
• 32 Power protection
• 47 Sequence overvoltage protection
• 55 Power factor
• 59/59Vx Overvoltage protection
• 59N Neutral voltage displacement
• 60VTS VT supervision
• 67/67G/67N Directional – phase/earth fault
• 81 Frequency protection – “f>” or “f<“
• 81B-V Backspin monitor – voltage reference
• 50BF Circuit-breaker failure protection – 3 pole
• 60CTS CT supervision
• 60VTS VT Supervision
• 74CC Close-circuit supervision
• 74TC Trip –circuit supervision
• 81HB2 Inrush current detection Â
• 52 Circuit Breaker control
• 52 CB Counters Trip & Delta Trip
• 52 I2t Counter
• 86 Lockout
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