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  • Product description and use method:

    FN12-12 series indoor high voltage load switch and fuse combination

    I. Overview

    FN12-12D / 630-20 indoor AC high-voltage load switch (hereinafter referred to as FN12-12D load switch) is a three-phase high-voltage switchgear with a rated voltage of 12KV and a rated frequency of 50HZ. It is used to open and close the load current and closed-loop current. No-load transformer and cable charging current, close short-circuit current. Load switch equipped with grounding switch can withstand short-circuit current.
    FN12-12R.D / 100-31.5 type indoor AC high voltage load switch-fuse combination electrical appliance (hereinafter referred to as FN12-12R.D combination electrical appliance) is FN12-12D load switch disconnection and S port LAJ-12 (XRNT port- 12) Indoor high-voltage switchgear combined with high-voltage current - limiting fuses . It can reliably break any current up to the short-circuit current: the load switch breaks the working current, the fuse opens the short-circuit current, and any overcurrent between the open-circuit current and the full short-circuit current is combined. The load switch is open.


    Model and meaning


    Third, the use of environmental conditions

    Normal working environment
    * Ambient air temperature
    Upper limit: + 40 ° C, lower limit: -25 ° C.
    * Altitude is 1000m and below.
    * Relative humidity: monthly average is not greater than 90%, daily average is not greater than 95%.
    * Ambient air should not be significantly polluted by corrosive or flammable gases and water vapor.
    * No frequent strenuous exercise.
    * Pollution resistance level: Class II.
    If the conditions of use exceed the above requirements, it shall be determined by the user and the manufacturer through consultation.


    Fourth, the main technical parameters

    Serial number

    project

    unit

    FN12-12D / 630-20

    FN12-12R.D / 125-31.5

    1

    Rated voltage

    KV

    12

    2

    Rated frequency

    HZ

    50

    3

    Rated current

    A

    630

    125

    4

    Lightning impulse withstand voltage

    KV

    、隔离断85 To ground and phase 75 , isolation 85

    5

    工频耐受电压 1min power frequency withstand voltage