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Strong Stability Power Distribution Terminal For Overhead Line Zero Sequence Reclosing

    Buy cheap Strong Stability Power Distribution Terminal For Overhead Line Zero Sequence Reclosing from wholesalers
     
    Buy cheap Strong Stability Power Distribution Terminal For Overhead Line Zero Sequence Reclosing from wholesalers
    • Buy cheap Strong Stability Power Distribution Terminal For Overhead Line Zero Sequence Reclosing from wholesalers
    • Buy cheap Strong Stability Power Distribution Terminal For Overhead Line Zero Sequence Reclosing from wholesalers

    Strong Stability Power Distribution Terminal For Overhead Line Zero Sequence Reclosing

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    Brand Name : Tianyihongda
    Model Number : TYHD-FTU6
    Certification : type test report
    Price : Negotiation
    Payment Terms : L/C, T/T, Western Union
    Supply Ability : 1000 sets per month
    Delivery Time : within 3-5 working days
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    Strong Stability Power Distribution Terminal For Overhead Line Zero Sequence Reclosing

    Length of cable at switch load side (m)50100150200250300350400450
    Length of overhead line at switch load side (m)<1000<4000
    Fixed value (A)0.20.40.60.81.01.21.41.61.82.0
    Length of cable at switch load side (m)480500550600650700750800850900
    Fixed value (A)2.22.42.62.83.03.23.43.63.84.0

    Calculation formula for fixed values: Fixed value of current =1.5×3×(S1×L1+S2×L2)

    L1 is the total length of overhead line at boundary switch load side. S1 is the empirical value of capacitive current of overhead line per km per phase. The recommended value is 0.02A/km.

    L2 is the total length of cable at boundary switch load side. S2 is the empirical value of capacitive current of cable per km per phase. The recommended value is 1A/km.

    Choose 1S when the neutral point is not earthed or earthed by arc suppression coil. Choose OS or lower when the neutral point is earthed by low resistance.

    The calculation of fixed values for zero-sequence protection current only depends on the direct earth capacitance of cable or overhead line at switch load side. The table above is the results of approximate amount multiplied by safety factor. Users can calculate personally according to the actual condition of the line at switch load side. If there are both cable and overhead line at switch load side, add their direct earth capacitances together. The safety factor shall be chosen between 1.5~3 (It is recommended that a larger safety factor shall be chosen when the fixed value is relatively small, while a smaller one shall be chosen when the fixed value is relatively large.)

    Enter Main Menu

    When the system is idle, press “VIEW” to enter the main menu

    After entering the main menu, press “ESC” to exit to idle status.

    Switching of Menu Content

    After entering the main menu, press “ENT” to select the content, press “” or “” to switch the content, and press “VIEW” to enter corresponding menu.

    Press “ESC” to exit to idle status.

    Modifying Fixed Value

    After entering fixed value interface, press “ENT” to confirm the fixed value item and press “ENT” again to confirm the modification of fixed value. Press number buttons “0” to “9” to input the fixed value parameters. Press “” or “” to change the data position and press “SET” to save the fixed value (Press “ESC” to give up the modification and the fixed value after modification will not be saved).

    After entering fixed value interface, press “” or “” to switch the fixed value interfaces.

    After entering fixed value interface, press “ESC” to exit to the main menu.

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