Directional (Incoming and Outgoing) Feeder Protection

    Directional (Incoming and Outgoing) Feeder Protection

    The MCA4 is a precise and reliable protection, control and monitoring relay for feeder, grid and generator applications. The latest generation series from Woodward, the MCA4 incorporates all the ANSI and IEC concepts to comply with ever changing grid interconnection requirements. Flexibility in hardware, software, application, user interface and communications makes the MCA4 adaptable to requirements today and in the future.

    The hardware is designed for all nominal values in combination with protection and control functionality. The parameterizing and analyzing software Smart view can be used consistently across the entire family of devices.

    ANSI: 50, 51, 67, 51C, 51V, 50N, 51N, 67N, 46, 49, 27, 59, 59N, 81U/O, 60FL, 79, 86, 50BF, 74TC , 81R, 78, 47, 60FL, 60L, 32F, 25, 37F, 32Q, 37Q, 37QR, 32S, 37S, 37R, 55, 51C, LVRT , Q->V, UFLS

    Device MCA4
    Line HighPROTEC
    Binary inputs 8
    Control and detection of switchgears Yes
    Control and supervision of a circuit breaker (remote or local) 6
    Current transformer inputs 4
    Output relays 5
    Voltage transformer inputs 4
    Watchdog relay 1
    Auto reclosing AR [79] Yes
    Circuit breaker failure protection [50BF] Yes
    Directional time overcurrent protection [67] Yes
    Earth fault directional feature [67N] Yes
    Earth fault protection [50N/51N] Yes
    Fault Ride Through (FRT) Yes
    Frequency gradient [81] Yes
    Frequency protection [81O/U] Yes
    IEC 60870-5-103 Optional
    Inrush stabilisation (2nd harmonic) Yes
    IRIG-B00X Yes
    Modbus (TCP) Optional
    Modbus RTU Protocol Optional
    Motor protection: thermal protection [49] Yes
    Negative sequence protection [46] Yes
    Output relay matrix Yes
    Parameter sets 4
    Phase balance [47] Yes
    Power direction [32/37] Yes
    Profibus DP Optional
    Programmable Logic Yes
    Q->&V< Yes
    Reset / Blocking Yes
    Residual voltage [59N] Yes
    Resistance earthed / solidly earthed [50N/51N] Yes
    Synchrocheck [25] Yes
    Time Synchronization via SNTP Yes
    Sensitive EF isolated/compensated [50SN/51SN] Yes
    Thermal replica [49] Yes
    Time Date Yes
    Time overcurrent protection [50/51] Yes
    Trip- and auxiliary relays [86] Yes
    Trip circuit resp. control circuit supervision [74TC] Yes
    Vector surge / mains decoupling [78] Yes
    Voltage dependent function Yes
    Voltage protection [27/59] Yes
    Voltage transformer supervision [60FL] Yes
    IEC 61850 Optional
    Intertripping Yes
    Time Synchronization via Modbus Yes
    Time Synchronization via IEC 60870-5-103 Yes
    Voltage Restraint Overcurrent [51V] Yes
    Voltage Restraint Controlled [51C] Yes
    Demand Management Yes
    THD (Todal Harmonic Distortion) Protection Yes
    Wide Frequency Range Yes
    Disturbance recorder Yes
    Event recorder Yes
    Fault recorder (none volatile) Yes
    Trend recorder Yes
    ANSI: IEC:
    25; Synchro.
    27; U<
    32; Pr>
    37; -
    46; I2>
    47; U2>
    49; -
    50BF; CBF
    50N; IE>,IE>>
    51N; -
    51Q; I2/I1>
    51V; I>f(U)
    55; -
    59; U>
    59N; UE>
    60FL; -
    67N; IE> ->
    74TC; -
    78; ΔΘ
    79; AR/AWE
    81 U/O; f<, f>
    81R; ROCOF


    All shown details without any guarantees!  We reserve the right of changes without prior notice.
    *Only the basic device structure is shown.  Differences in detail are possible.