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0102030405
FLN36-12D.FLRN36-12-Indoor high voltage load switch

FLN36-12D.FLRN36-12-Indoor high voltage load switch

FLN36-12D.FLRN36-12-Indoor high voltage load switch the core functionality of the FLRN36-12 lies in its double-break rotary contact structure, which enables three different operating states: closed, open, and grounded. This versatility enables the load switch to effectively manage electrical loads while ensuring operational safety. Integrating the gate switch, disconnector, and grounding switch into a single unit simplifies installation and maintenance, making it a practical choice for indoor high-voltage applications.

A highlight of FLN36-12D.FLRN36-12 is the use of SF6 gas as arc extinguishing and insulating medium. This advanced technology ensures that the main circuit is always sealed in the upper and lower shells cast with epoxy resin. The epoxy resin encapsulation not only enhances the durability of the switch, but also protects its conductive properties from external environmental factors. This design concept is essential to maintaining the integrity of the electrical system, especially under harsh working conditions.

 

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    Product Details

    Basic functions and features

    ◆The load switch adopts a double-break, rotary moving contact structure and has the following three operating states: closed: open: grounded.

    ◆SF6 gas is used as arc extinguishing and insulating medium. The main circuit is sealed in the upper and lower shells cast by epoxy resin. The conductive performance is not affected by the external environment.

    ◆Good safety performance: If an arc occurs inside, there is a structural weakness inside the shell, which will be opened, and then the arc relief valve on the cabinet will open to direct the overpressure airflow to the outside of the cabinet, ensuring the safety of the switch cabinet.

    ◆The load switch integrates the gate, disconnect switch and earthing switch in one unit, which is encapsulated in an epoxy resin shell filled with SF6 gas. It has three interlocking positions, compact structure, high safety and reliability.

    ◆Small size, light weight, maintenance-free, easy and safe to operate.

    Technical Parameters

    Serial number

    Name

    Unit

    Data

    1

    Rated voltage

    kV

    12

    2

    Rated frequency

    Hz

    50

    3

    Rated current

    A

    630

    4

    Rated peak withstand current

    kA

    50

    5

    4s Rated short-time withstand current

    kA

    20

    6

    Rated making current

    kA

    50

    7

    Rated breaking current

    Active load breaking current

    A

    630

    Closed loop breaking current

    A

    630

    Cable charging breaking current

    A

    10

    8

    Power frequency withstand voltage 1min between phases, to ground/break

    kV

    42/48

    9

    Lightning impulse withstand voltage phase to phase, to ground/break

    kV

    75/85

    10

    Sf6 gas relative pressure (20℃ gauge pressure)

    MPa

    ≤0.04

    11

    Rated operating voltage (electric)

    V

    AC220、DC220

    12

    Rated voltage of shunt release

    V

    AC220、DC220

    13

    Average opening speed

    m/s

    3.5±1.5

    14

    Average closing speed

    m/s

    3.5±1.5

    15

    Three-phase opening and closing synchronism

    ms

    ≤3

    16

    Main circuit resistance

    μΩ

    ≤120

    17

    Manual operation maximum torque

    N.m

    ≤160

    18

    Phase center distance

    mm

    210±0.5