Generator Protection Selection Table by izj14562

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									Generator Protection Selection Table

   Relay Reference                                      MRMF                                     MROS                        MRFT                         MRVT
   Relay Type                              Digital 4 Segment LED                    Digital 4 Segment LED         Digital 4 Segment LED         Digital 4 Segment LED
   Protective Functions                    Mains Decoupling Relay                   Mains Failure                 Frequency Relay               Under/Over Voltage
   ANSI No’s                               27/59/81/78                              78                            81                            27/59
   Case Size        Output Relays          100                   5                  100                  3        100               5           100             5
   Characteristics                         Over/Under Voltage                       Loss of Mains                 Over/Under Frequency          2 Stage Over Voltage
                                           Over/Under Frequency                                                   df/dt                         2 Stage Under Voltage
                                           Loss of Mains
                                           (MRMF-2 df/dt)
                                           (MRMF-1 Vector Surge)

   Settings                                U</U<</U>/U>>                            DQ 2-22 Deg                   Freq = 50/60Hz                U</U<</U>/U>>
                                           Vn = 100V 2...200V                       Vector Surge 1 or 3 Phase     Freq Rate = 2...99 periods    Vn = 100V 2...200V
                                           Vn = 230V 2...460V                                                                                   Vn = 230V 2...460V
                                           Vn = 400V 4...800V                       Voltage Inhibit Vb 5...100%   F1 - F4 30...70Hz (50Hz)      Vn = 400V 4...800V
                                           t U</tU>   0.04...50s                                                        40...80Hz (60Hz)        t U</tU>   0.04...50s
                                           t U<</tU>> 0.04...50s                                                                                t U<</tU>> 0.04...50s
                                                                                                                  Threshold & Trip Value
                                           F = 50/60Hz                                                            for dF/dt
                                           Fr = 2...99 periods                                                    Fe1/Fe2 40...60Hz (50Hz)
                                                                                                                            50...70Hz (60Hz)
                                           F1 - F3 30...70Hz (50Hz)
                                                   40...80Hz (60Hz)                                               df1    0.2...10Hz
                                           TF1 - TF3 0.06...50s                                                   tdf1   1...64 periods
                                           Voltage Inhibit Vb 5...100%
                                           MRMF-2 (df/dt)                                                         df2    0.2...10Hz
                                           df    0.2...10Hz                                                       tdf2   1...64 periods
                                           tdf   2...64 periods
                                                                                                                  Voltage Inhibit Vb 5...100%
                                           MRMF...1 (Vector Surge)
                                           DQ 2...22 Deg
                                           Vector Surge 1 or 3 Phase
   RS485 Serial Port                       P&B/Modbus RTU                           P&B/Modbus RTU                P&B/Modbus RTU                P&B/Modbus RTU




   Relay Reference                                   MRRP-1/3                                    MIRP-1                     MRNS                         MRFF
   Relay Type                              Digital 4 Seg LED                        Switch Set                    Digital 4 Seg LED             Digital 4 Seg LED
   Protective Functions                    1 or 3 Phase Reverse Power               Single Phase Reverse Power    Negative Phase Sequence       Field Failure
   ANSI No’s                               32                                       32                            46                            40
   Case Size        Output Relays          100                   5                  100                  2        100               4           100             5
   Characteristics                         Under/Over Power                         Reverse Power                 Negative Phase Sequence       Selectable 2 Stage Field
                                           Reverse Power                                                                                        Failure (Mho or Offset Mho)

                                                                                                                                                3 Phase Voltage Supervision


   Settings                                P</P> 0.01...2 x Pn                      Pr1/Pr2 2...17.5% Pn          I2w    0.02...0.5 x In        U<
                                           t 0.04...100s                            t Pr INST, 0.1...62s          tw     0.1...20s              Un = 100V : 2...110V
                                                                                                                                                Un = 220V : 5...255V
                                           Pr 0.01...2.0 x Pn                                                     I2s    0.02...0.5 x In        Un = 440V : 10...440V
                                           t 0.04...100s                                                                                        t U< 0.04...50s
                                                                                                                  T(DEFT) 1...200s
                                                                                                                                                Z1A/Z2A : -3 ... +3pu
                                                                                                                  T(INVS) 300...3600s           Z1B/Z2B : 0...6pu
                                                                                                                                                t Z1/tZ2 : 0.04...50s



   RS485 Serial Port                       P&B/Modbus RTU                           No                            P&B/Modbus RTU                P&B/Modbus RTU
For Restricted & Standby Earth Fault Protection Relays Refer To Transformer Protection Selection Table

                MRMF                                    MRRP-1                                    MIRP-1                      MRNS                          MRFF




                                                                                             8
    Relay Reference                      MSP-UV                        MSP-OV                          MSP-V                    MIRV-NVD
    Relay Type                   Digital 2 Line LED            Digital 2 Line LED            Digital 2 Line LED          Switch Set
    Protective Functions         Phase Under Voltage           Phase Over Voltage            Phase Under/Over Voltage    Single Phase Over Voltage
    ANSI No’s                    27                            59                            27/59                       59n
    Case Size    Output Relays   100                           100                           100                         100               1
    Characteristics              Single/Two Phase              Single/Two Phase              Single/Two Phase            Neutral Voltage
                                 Definate Time                 Definate Time                 Definate Time               Displacement
                                 Under Voltage                 Under Voltage                 Under & Over Voltage



    Settings                     U<           30...225% Un     U>           30...225% Un     U<           30...225% Un   UE>          1...62% Un
                                 t            0.1 to 60s       t            0.1 to 60s       U>           30...225% Un   t            0.1...62s

                                                                                             t            0.1 to 60s




    RS485 Serial Port            P&B/Modbus RTU                P&B/Modbus RTU                P&B/Modbus RTU              No




    Relay Reference                       MRDG                          MIRD-G                         MRI-V                       MRCS
    Relay Type                   Digital 2 Line LED            Switch Set                    Digital 4 Segment LED       Digital 2 Line LCD
    Protective Functions         Generator Differential        Generator Differential        Voltage Controlled O/C      Check Synchronising
    ANSI No’s                    87G                           87G                           50V/51V                     25
    Case Size    Output Relays   100             5             100             1             100             4           100               1
    Characteristics              2 Stage Biased Differential   2 Stage Biased Differential   Voltage Controlled          Check Synchronising
                                                                                             Overcurrent
                                                                                             Definite Time/IDMT



    Settings                     Multifunctional               ID1   5...42.5% In            Definite Time I>            Phase Diff. 2...30 Deg
V                                Refer to Technical            ID2   5...42.5% In            Is 0.5...2.0 x IN           Differential Voltage 1...20%
                                 Publication                                                 t 0.03...165s               Time Delay 1...5 Sec
V                                                                                            I>>2.0...40.0 x IN
                                                                                             t 0.03...2s
                                                                                             V 10.0...100% VN
V                                                                                            Inverse Time I>
                                                                                             Is 0.5...2.0 x IN
                                                                                             t 0.05...1.6
                                                                                             I>> 2.0...40.0 x IN
                                                                                             t 0.03...2s
                                                                                             V 10.0...100% VN

    RS485 Serial Port            P&B/Modbus RTU                No                            P&B/Modbus RTU              Yes


                MRFT                       MIRV-UO                       MIRD-G                         MRI-V

               MRMF
                                                                            MRFF                                                               MRCS




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