Lightning protection

    SAdS15z

    Maximum operating voltageUp to 17.5 kV
    Protection typeAgainst direct & indirect lightning
    Installation3 products per pole
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    Preview sads15z 1
    Preview sads15z 2
    Preview sads15z 3

    LLPD SAdS15z is intended for protection of overhead lines with the highest voltage for equipment up to 17.5 kV and high short-circuit currents against direct lighting strikes, back flashovers and induced overvoltages, as well as their deleterious consequences.

    Operational Principle

    The Operational Principle is based on the EasyQuench Technology.

    The variable length of electrodes and different attachment solutions makes the SAdS15z adaptable to any type crossarm installation.

    Overall Dimensions

    Medium sads15z 4

    Performance specification and characteristics

    SAdS15z and the line
    Highest voltage for equipment up to 17.5 kV
    Maximum prospective fault current*, kA 5
    Rated frequency, Hz 50 (±12)
    Power frequency withstand voltage (for minimal 140 mm air gap), kV
    70
    SAdS15z and lightning
    High current impulse (4/10 μs), kA 65
    Lightning discharge capability** (200 μs), C 2.4
    Maximum fault quenching lightning current (8/50 μs), kA 20
    Minimum withstand amount of operations 10
    Additional power losses on the line, % 0
    Weight, kg 2.6
    Average life time expectancy, years 20 to 30
    UV resistance***, h 1000
    Time to install/pole, min. 10 to 20
    Maintenance 1 visual verification per year
    Additional Equipment cross-arm fitting and conductor clamp + jumper

    * Maximum calculated short-circuit current in LLPD’s location;

    ** According to IEC 60099-8;

    ** According to ISO 4892-2, method A, IEC 62217.

    Installation

    1 piece per phase for each circuit on one pole for ensuring comprehensive protection of an overhead line against DLS, BFO and IOV.

    LLPD SAdS15z must be installed with an air gap between upper and lower electrodes. In order to select the proper value of the gap, please refer
    to the table.

    Insulator’s CFO (kV)

    SAd15z: Air gap, mm

    SAdS15z: power frequency withstand voltage, kV

    <140

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    160

    80-100

    65

    55

    180

    100-120

    70

    60

    200

    120-140

    75

    65

    220

    140-160

    80

    70

    240

    160-180

    85

    75