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Flash Products

Overvoltage Protection (OVP) System for Wind Turbine Lights

Approved for Siemens Wind Turbines

Flash Technology’s Overvoltage Protection System (OVP) is a surge handling device rated up to 40kA 8/20µS. It is designed for in-line installation between a wind turbine light and the supply interface located in the nacelle of wind turbines. The OVP provides protection from direct and indirect effects of lightning or other surge-related damage to the host equipment.


Two versions of the OVP product are available:

  1. The OVP product provides protection for the AC power conductors and the beacon’s alarm dry contact conductors.
  2. The OVP-RADAR product additionally provides protection for the beacon’s radar control inputs.

Please fill out the form below or call 615.503.2000 with questions or to order this product.

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    Alarm Circuit Protection


    Citel DLA-24D3

    Utilisations Type

    Leased Line 4-20 mA

    Nominal Line Voltage (Un)

    24 V

    Max. Line Voltage (Uc)

    28 V

    Max. Line Current

    300 mA

    Max. Frequency

    3 MHz

    Protection Level (Up) 8/20μs impulse – 1 time

    40 V

    Nominal discharge current (ln) 8/20μs impulse – 10 times

    5 kA

    Max. discharge current (lmax) 8/20μs impulse – 1 time

    20 kA

    Impulse Current (limp) 10/350μs impulse – 2 times

    5 kA

    End of Life

    Short Circuit


    Power Circuit Protection


    Citel DS42S-230


    230 V
    1-phase+N, 2-phase

    AC System

    Single / split phase

    Protection Mode


    Imax Total

    80 mA

    Up L/PE

    1.25 kV




    ETL Intertek Verified


    NEMA 4X


    7.3 W x 7.3 H x 4.96” D (185.4 x 185.4 x 125.98 mm)


    2.8 lbs (1.3 kg)


    OVP system datasheet


    Current Manual

    OVP system manual
    Manuals for older product revisions can be found in the Knowledge Base.