Protection:

Ø  24 Overexcitation protection

Ø  27 Undervoltage protection – 3 phase

Ø  27Vx Undervoltage protection – Vx

Ø  37 Undercurrent protection – phase

Ø  37G Undercurrent earth fault – measured

Ø  46 Negative sequence overcurrent protection

Ø  46BC Broken conductor detection

Ø  47 Sequence overvoltage protection

Ø  49 Thermal overload protection

Ø  50 Instantaneous overcurrent – phase

Ø  50G Instantaneous earth fault – measured

Ø  50N Instantaneous earth fault – calculated

Ø  51 Time delayed overcurrent – phase

Ø  51CL Time delayed cold load

Ø  51G Time delayed earth fault – measured

Ø  51N Time delayed earth fault – calculated

Ø  52 Circuit-breaker control

Ø  59 Overvoltage protection – 3 phase

Ø  59N Neutral voltage displacement

Ø  59Vx Overvoltage protection – Vx

Ø  81 Frequency protection – "f>" or "f>”

Ø  87T-BD Transformer differential protection – biased

Ø  87T-HS Transformer differential protection – highset

Ø  87GH Restricted earth fault protection –high impedance

Ø  87T-BD HB5 Overfluxing detection

Ø  87NL Restricted earth fault protection – low impedance

Supervision:      

Ø  50BF Circuit-breaker failure protection – 3 pole

Ø  60CTS CT supervision

Ø  60VTS VT 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  79 Automatic reclosing

Ø  86 Lockout

Available with following CT, VT & BI / BO:

Ø  12CT,24BI,10BO 

Ø  12CT,4VT,35BI,16BO

Ø  Optional AFD & TSI