7SR5710 Motor Protection

7SR5710 Motor Protection

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  • Description

 

Protection:

Ø  14 Locked rotor protection

Ø  37/37G Undercurrent protection

Ø  46BC Broken conductor detection

Ø  46PR Phase-rotation reversal

Ø  46UB Phase unbalance

Ø  48 Starting-time supervision

Ø  49R Rotor thermal overload protection

Ø  49TS Temperature sensor supervision

Ø  50/50N/50G Instantaneous overcurrent

Ø  50AFD Arc Flash Detection

Ø  50/50G/50N Instantaneous overcurrent/EF

Ø  50AFD Arc flash detection

Ø  50BCL Break capacity limit

Ø  51/51G/51N Time delayed overcurrent/EF

Ø  66 Number of starts

Ø  81B Backspin monitor

Ø  87GH REF protection – high-impedance

Supervision:       

Ø  50BF Circuit-breaker failure protection – 3 pole

Ø  60CTS CT supervision

Ø  74CC Close-circuit supervision

Ø  74TC Trip –circuit supervision

Ø  81HB2 Inrush current detection

Control & Plant:

Ø  52 Circuit Breaker control

Ø  52 CB Counters Trip & Delta Trip

Ø  52 I2t Counter

Ø  86 Lockout