TXGNH-12 Box-type fixed metal-enclosed switching device high voltage switching device

Short Description:


  • Port: tianjing
  • Supply Ability: TENPRO
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

    Outline

    TXGNH-12 type fixed metal – enclosed switching device (abbreviated as ring main unit) is an AC high voltage electrical equipment with rated voltage of 12 KV and rated frequency of 50Hz. It is mainly used in three – phase AC loop network, terminal distribution network and industrial electric equipment. To accept and distribute electric energy and other functions, it is also suitable for equipment into the box type substation.

    Model and meaning

    xdr

    Regular service conditions

    1 Ambient air temperature: 1: -15 ℃ ~ 40 ℃;

    2 Altitude: 1000m and below;

    3 Humidity condition: the daily average value is not more than 95%, the daily average of water vapor pressure is not more than 2.2 KPA, the monthly average value is not more than 90%, and the monthly average of water vapor pressure is not more than 1.8 KPA.

    4 Earthquake intensity: no more than 8 degrees;

    5 A place free of apparent pollution, such as corrosive or combustible gases.

    Note: users may negotiate with our company if the above normal use conditions are exceeded.

    Main technical parameters

    Serial No.

     

    Project

    Unit

    TFN12-10

    TFZN25-12

    1

     

    Rated voltage

    KV

    12

    2

     

    1min power frequency withstand voltage

    Ground and interphase 42; isolated fracture 48

    3

     

    Lightning impulse voltage (peak)

    To the ground and phase 75;Isolation fracture 85

    4

     

    Rated frequency

    Hz

    50

    5

     

    Main busbar rated current

    A

    630

    6

    Load switch

    Rated current

    630

    7

    Electrical life under rated current

    times

    No less than 100

     

    8

    interruption no-load transformer capacity

    kVA

    1250

    9

    Rated thermal stable current

    kA/S

    20 / 4 earthing switch 20 / 2

    10

    Rated dynamic stable current (peak)

    kA

    50

    11

    Rated short-circuit closing current (peak)

    50

    12

    Composite apparatus

    Fuse rated current

    A

    100

    13

    Rated transfer current

    1500

    2000

    14

    Rated short-circuit breaking current

    kA

    31.5

    15

    Fuses type

     

    S口LAJ-12(XRNT□-10)

    16

     

    Mechanical life

    Times

    2000

    10000

    17

     

    Auxiliary Port 1min Power Frequency withstand Voltage

    kV

    2

    18

     

    Electric operating mechanism working voltage

    V

    Sub DC 220; 110

    19

     

    Electric operating mechanism working voltage

     

    IP2X

    20

     

     

    Shape size (wide × depth × high)

    mm

    650 (850) ×900×2000 (2200)


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