Schema releu NA30

download Schema releu NA30

of 1

Transcript of Schema releu NA30

  • 7/24/2019 Schema releu NA30

    1/1193NA 30 - Manuae - 01 - 2011APPENDIX

    Two phase CTs and residual current from core balanced CT

    Raf (*)

    da

    dn

    N

    A

    UE

    (**) Operation for 67N elements for insulated neutral systems and characteristic angle setting = 90

    NA30-SCH2.ai

    BUSBAR

    LINE

    OPERATION(

    **)

    NA30

    L1

    L2L3

    B7

    B8

    IE

    C7

    C8

    P1

    S1

    S2

    P2

    *Raf - antiferrorisonance resistor

    59N

    50N/51N

    49

    50/51

    74CT

    67N

    BINARYINPUTS

    50BF

    CB position

    C2

    C1

    C3

    C4

    C5

    C6

    P1

    S1

    S2

    P2

    IL1

    IL2

    IL3