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HXGT10-40.5 indoor high pressure SF6 ring main unit

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  • HXGT10-40.5 indoor high voltage SF6 ring network cabinet is a 50 Hz three-phase AC indoor high voltage distribution equipment. It is suitable for ring network power supply or double radiation power supply of 40.5kV power supply line, which can change the original single radiation power supply mode. When the line breaks down, it can restore the transformer loop feed in time, greatly improving the reliability and utilization of power supply. It is especially suitable for industrial and commercial areas or rural towns with high power supply load density and cable feed network, and the ring network cabinet is safe to use, It is not affected by the climate, easy to install, maintenance free and small in size, so it is very suitable to be installed in the box type substation. The load switch or load switch fuse combination apparatus in the ring main unit can also be used in a separate cabinet.

    Product features

    1. The technical parameters are high, and the main technical parameters (such as insulation level) exceed those of the same type of switchgear abroad;

    2. Small size and light weight, the minimum volume of a single set is 712 * 1260 * 1730 (mm), and the floor area is 1 / 3 of the same function open electrical appliances;

    3. The installation is fast and convenient, and the user does not need any debugging after getting the product. It can be put into use only by connecting in and out cables and secondary power lines, and can be installed on a variety of foundations;

    4. It is easy to operate. The operation holes of load switch and grounding switch are separated by safe operation. It has complete interlocking device and large safety margin. It can operate safely under 0.02-0.04mpa. The pressure relief channel is designed in extreme cases;

    5. The maintenance is convenient, and the switch cabinet does not need to be maintained for 20 years;

    6. The load switch cabinet has strong environmental adaptability and is fully sealed without any exposed live parts. It can operate in harsh environment for a long time;

    7. High technical and economic indicators; the most economic and reasonable medium voltage distribution mode recognized by foreign countries.

     Description

    Unit

    Value

    Rated voltage

    kV

    40.5

    Rated frequency

    HZ

    50

    Lightning impulse withstand voltage phase to phase, ground to ground / isolation distance            

    kV

    185/215

    1 min power frequency withstand voltage phase to phase, ground to ground / isolated distance

    kV

    95/118

    Load switch

    Rated current

    A

    630

    Rated thermal stability current (2S)

    kA

    20

    Rated dynamic stability current (peak value)

    kA

    50

    Rated short circuit making current (peak value)

    kA

    50

    Mechanical life

    Times

    5000

    Earthing switch

    Bus side

    Rated thermal stability current (2S)

    kA

    20

    Rated dynamic stability current (peak value)

    kA

    50

    Rated short circuit making current (peak value)

    kA

    50

    Mechanical life

    Times

    2000

    Grounding circuit Rated thermal stability current (2S)

    kA

    17.4

    Rated dynamic stability current (peak value)

    kA

    43.5

    Fuse  

    Rated current

    A

    50

    Rated breaking current

    kA

    31.5

    Protection class

    Main circuit (load switch, grounding switch)

     

    IP5X

    Fuse, cable connector

     

    IP4X

    Fuse room and cable room

     

    IP3X

    Rated pressure of SF6 gas (ambient temperature 20 ℃)

    Minimum pressure of SF6 gas (ambient temperature 20 ℃)

    Mpa

    0.04

    0.02

    Annual leakage rate of SF6 gas

    ≤1

    Moisture content of SF6 gas (V / V)

    ppm

    ≤400

     

     

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