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Medium Voltage RMU SF6 Load Break Switch 10kV 630A For Incoming Line

lbs fln36-12-630-20

  • Medium Voltage RMU SF6 Load Break Switch 10kV 630A For Incoming Line

    FLN36-12kV SF6 load break switch is a switch equipment for medium voltage switchgear, using SF6 gas as arc extinguishing and insulating medium. There are three working positions: open, closed, earth position in the switch. The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.
    It can be divided into two types: FLN36-12D ( K type single spring operating mechanism ), FLRN 36-12D (A type double spring operating mechanism). The latter type could be equipped with fuse combination, having control and protecting function, which can be used for power supply and substation as a protecting and control device, especially suitable for ring main unit, cable distribution box and switching substation.

    Basic functions and features
    1. Load breaker switch adapts double fracture, rotary movable contact structure, with the following three kinds of operating states: Closing, opening, earthing.
    2. Using SF6 gas as an arc extinguishing and insulating medium, the main circuit seals by the upper and lower housing pouring epoxy resin, the conductive function is unaffected by external influences.
    3. Good safety performance. If internal arcing occurs, the housing has an internal structure weak point, it will be rushed to open, followed by the cabinet above the shutter release arc red open air overpressure stream-oriented outside the cabinet, ensure that the switch cabinet security checks.
    4. Load breaker switch sets gates, opening, earthing switch three at one, filled with SF6 gas encapsulated in epoxy resin housing, three-position interlock,compact structure,high security and reliability.
    5. Small size, light weight, maintenance-free, easy and safe to operate.

    Normal working Environment

    1. Altitude: ≤1000m
    2. Ambient temperature at -30ºC to +40ºC, the daily average temperature should not more than 30ºC.
    3. The daily average of relative humidity is less than 95%, the average monthly is less than 90%.
    4. Working environment should be without steam, gas, chemical corrosive deposition, salt fog, dust, dirt and other dangerous explosive media, which will severely impact on insulation and conductivity of products.
    5. Working environment should not be regular vibration or serious bumps.
    PS: Products with special requirements, specifications and dimensions that need to be improved can be designed and manufactured according to user requirements.

    Technical Parameters
    Item
    Unit
    Data
    FLN36-12D/T630-20
    Load break switch
    FLRN36-12D/125-50
    LBS + Fuse-combination units
    Rated voltage
    kV
    12
    12
    Rated frequency
    Hz
    50
    50
    Rated current
    A
    630
    125
    Short-duration(1min) power frequency withstand voltage
    kV
    42
    42
    Lightning impulse withstand voltage
    kV
    75
    75
    Rated power frequency withstand voltage(5min)
    kV
    24
    24
    Rated short-time withstand current(Load break switch/3s)
    kA
    20
    20
    Rated short-time withstand current(Earthing switch/2s)
    kA
    20
    20
    Rated peak withstand current(Load break switch)
    kA
    50
    50
    Rated peak withstand current(Earthing switch)
    kA
    50
    50
    Rated short-circuit making current(Load break switch)
    kA
    50
    125
    Rated short-circuit making current(Earthing switch)
    kA
    50
    50
    Rated closed-loop dropout current
    A
    630
    Rated active load breaking current
    A
    630
    Rated cable-charging breaking current
    A
    10
    10
    Rated short-circuit breaking current
    kA
    50*
    Rated transfer current
    A
    1750*
    Fuse type
    XRNT-12kV/125A*
    Fuse impact output energy
    J
    1±0.5
    Mechanical endurance LBS/Earthing switch
    Time
    5000/2000
    5000
    Air insulation distance of charged body and ground
    mm
    ≥ 125
    ≥ 125
    SF6 Gas pressure(Relative pressure at 20℃ )
    bar
    0.4
    0.4
    Opening and Closing simultaneity
    ms
    ≤ 2
    ≤ 2
    Main circuit resistance
    μΩ
    ≤ 65
    ≤ 65

     

  • Medium Voltage RMU SF6 Load Break Switch 10kV 630A For Incoming Line

 

12kV 200mm 3 Phase Switch with Manual Operating Mechanism Sf6 Lbs Air Load Break Switch

sf6 lbs load break switch

  • 12kV 200mm 3 Phase Switch with Manual Operating Mechanism Sf6 Lbs Air Load Break Switch

    FLN36-12kV SF6 load break switch is a switch equipment for medium voltage switchgear, using SF6 gas as arc extinguishing and insulating medium. There are three working positions: open, closed, earth position in the switch. The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.
    It can be divided into two types: FLN36-12D ( K type single spring operating mechanism ), FLRN 36-12D (A type double spring operating mechanism). The latter type could be equipped with fuse combination, having control and protecting function, which can be used for power supply and substation as a protecting and control device, especially suitable for ring main unit, cable distribution box and switching substation.

    Basic functions and features
    1. Load breaker switch adapts double fracture, rotary movable contact structure, with the following three kinds of operating states: Closing, opening, earthing.
    2. Using SF6 gas as an arc extinguishing and insulating medium, the main circuit seals by the upper and lower housing pouring epoxy resin, the conductive function is unaffected by external influences.
    3. Good safety performance. If internal arcing occurs, the housing has an internal structure weak point, it will be rushed to open, followed by the cabinet above the shutter release arc red open air overpressure stream-oriented outside the cabinet, ensure that the switch cabinet security checks.
    4. Load breaker switch sets gates, opening, earthing switch three at one, filled with SF6 gas encapsulated in epoxy resin housing, three-position interlock,compact structure,high security and reliability.
    5. Small size, light weight, maintenance-free, easy and safe to operate.

    Normal working Environment

    1. Altitude: ≤1000m
    2. Ambient temperature at -30ºC to +40ºC, the daily average temperature should not more than 30ºC.
    3. The daily average of relative humidity is less than 95%, the average monthly is less than 90%.
    4. Working environment should be without steam, gas, chemical corrosive deposition, salt fog, dust, dirt and other dangerous explosive media, which will severely impact on insulation and conductivity of products.
    5. Working environment should not be regular vibration or serious bumps.
    PS: Products with special requirements, specifications and dimensions that need to be improved can be designed and manufactured according to user requirements.

    Technical Parameters
    Item
    Unit
    Data
    FLN36-12D/T630-20
    Load break switch
    FLRN36-12D/125-50
    LBS + Fuse-combination units
    Rated voltage
    kV
    12
    12
    Rated frequency
    Hz
    50
    50
    Rated current
    A
    630
    125
    Short-duration(1min) power frequency withstand voltage
    kV
    42
    42
    Lightning impulse withstand voltage
    kV
    75
    75
    Rated power frequency withstand voltage(5min)
    kV
    24
    24
    Rated short-time withstand current(Load break switch/3s)
    kA
    20
    20
    Rated short-time withstand current(Earthing switch/2s)
    kA
    20
    20
    Rated peak withstand current(Load break switch)
    kA
    50
    50
    Rated peak withstand current(Earthing switch)
    kA
    50
    50
    Rated short-circuit making current(Load break switch)
    kA
    50
    125
    Rated short-circuit making current(Earthing switch)
    kA
    50
    50
    Rated closed-loop dropout current
    A
    630
    Rated active load breaking current
    A
    630
    Rated cable-charging breaking current
    A
    10
    10
    Rated short-circuit breaking current
    kA
    50*
    Rated transfer current
    A
    1750*
    Fuse type
    XRNT-12kV/125A*
    Fuse impact output energy
    J
    1±0.5
    Mechanical endurance LBS/Earthing switch
    Time
    5000/2000
    5000
    Air insulation distance of charged body and ground
    mm
    ≥ 125
    ≥ 125
    SF6 Gas pressure(Relative pressure at 20℃ )
    bar
    0.4
    0.4
    Opening and Closing simultaneity
    ms
    ≤ 2
    ≤ 2
    Main circuit resistance
    μΩ
    ≤ 65
    ≤ 65

     

 

FN18 High Voltage Load Break Switch Nalf Air Insulation Switch Breakers Fuse Switch

FN18 load switch

 

  • FN18 High Voltage Load Break Switch Nalf Air Insulation Switch Breakers Fuse Switch

    FN18-口is a general purpose, three-pole, load break switch that offers switchgear owners and assemblers the advantages of an advanced interrupting technology and proven, dependable performance in a compact design. The switch is available to switchgear assemblers as a building block for metal-enclosed and pad-mounted switchgear applications in ratings from 12-40.5 kV.
    The standard FN18 switch includes a heavy-duty steel frame with stand-off insulators, a unique puffer-type arc extinguishing system, an operating mechanism and current-carrying components, including blade-type interrupters with cast hinges and jaw connectors.
    Optional accessories and features include a variety of operating handles, a motor operator, auxiliary switches, a shunt trip device, fuse bases, mechanical fuse tripping, grounding switches, mechanical door interlocking and key interlocking.

    FN18 series indoor high-voltage load switch has the advantages of easy design, operation, compact structure, small volume, full function, light weight, fast breaking and closing speed and high reliability. It is suitable for AC 50Hz, rated voltage 12kV, 24kV, rated current 630A and three-phase distribution system, especially for city network construction and renovation projects, high-rise buildings, ring network power supply of public facilities, and is an ideal product for box-type substation and transformer protection.

  • FN18 High Voltage Load Break Switch Nalf Air Insulation Switch Breakers Fuse Switch
    Rated voltage Unit 12kV 17.5kV 24kV 36kV 40.5kV
    Rated current A 400 630 1250 400 630 1250 400 630 1250 630 800 1000 630 800 1000
    Max.rated current A 400 630 1250 400 630 1250 400 630 1250 630 800 800 630 800 800
    Short circuit making capacity KA peak 67 50 50 50 50
    Peak withstand current* KA peak 82 82 82 66 66
    Short time current 1 sec. KA eff 31.5

    25

    20

    31.5

    25

    20

    31.5

    25

    20

    31.5

    25

    31.5

    25

    31.5

    25

    25

    25

    16

    25

    25

    16

    31.5

    25 

    16

    25 25 25 25 25 25
    2 sec.
    3 sec.
    Mainly active load breaking capacity

    (test duty 1 and, IEC 60265-1( 265))

    A 400 630 1250 400 630 1250 400 630 1250 630 800 630 800 630 800
    Mainly capacitive breaking capacity

    (test duty 4, IEC 60265-1 (IEC 265))

    A 150 45 80 50 50
    Mainly inductive breakingcapacity cosφ=0.15 A 16 16 16 16 16
    Max. breaking capacity in co-operation with fuses IEC 62271-105(IEC 420 1990-11) A 1600 1600   1600 1600   900 900   300* 300 300 300 300 300
    Power frequency withstand voltage 50 Hz 1 min.  

    -to earth and between poles                                 

    -across isolating distance

    kV 42

    45

    45

    60

    55 

    70

    80

    88

    95

    120

    Impulse withstand voltage 1.2/50 μs

     – to earth and between poles   

    – across isolating distance

    kV

    75

    85

    95

    110

    125

    145

    170

    195

    190

    220

    Pole distance mm 150, 170, 210 170,210 170,235,275 360 360
    Max. operating torque at:

    -closing K/A mech.                                           

    -opening K/A mech.

    Nm 115-120 Nm
    K-mech.120 Nm/A-mech. 3Nm
    80-100 Nm
    K-mech.80-100 Nm
    Operating angle on the shaft degree 130 120
    Opening time ms 40-60 60
    FN18 Outline Dimension Drawing

    FN18 load break switch drawing

    FN18 load break switch drawing

    FN18 load break switch structure

    FN18 lbs structure

Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

 

  • Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

    The sf6 load break switch is a kind of switchgear with a simple arc extinguishing device. It uses SF6 gas as the insulation and arc extinguishing medium. It can be used as the closing and breaking load current and overload current. It can also be used as the closing and breaking no-load. Lines, no-load transformers and capacitor banks, etc., all three-position load switches with on, off and grounding functions are simple in structure and affordable. In addition to long life, strong breaking force and other advantages of vacuum load switch, its outstanding advantages are easy to achieve three working positions (on, off and ground), small current (inductance, capacitance) breaking, anti- Strong environmental conditions. It is suitable for promotion and application in urban and rural medium voltage distribution networks.

    Newly developed load break switch, applied on SF6 RMU, with features of high efficiency, safety, reliability, simple structure, flexible operation, interlock reliable, easy to install and so on.

    It satisfies with standard IEC94, GB3804, GB16926 and so on.

     

    Normal ambient condition

    1. Altitude: ≤2000M
    2. Ambient temperature:from-40℃ to +40℃
    3. Relative humidity: daily average ≤95%, monthly average ≤90%.
    4. Earthquake intensity: ≤8 degree
    5. Ambient air should not significantly contaminated corrosive, flammable gas, vapor, etc., should be no recurrent severe vibration.
    6. Annual leakage rate: ≤0.1%.

     

    Technical parameters 

    Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

    No. Item Unit Data
    1 Rated voltage KV 24
    2 Rated frequency Hz 50
    3 Rated current A 630
    4 1 min power frequency withstand voltage KV 65
    5 Lighting impulse withstand voltage KV 125
    6 Rated short circuit breaking current(peak) KA 20
    7 Rated activeload and circuit breaking current A 630
    8 Rated transferring current A 630
    9 Rated short circuit making current(peak) KA 50
    10 Rated cable(line)charging breaking current A 10
    11 Phase distance mm 230
    12 Rated withstand current(peak) KA 50
    13 Short time withstand current(2s) KA 20
    14 Mechanical life Time 5000
  • Indoor 24kV 230mm SF6 insulated Fuse Load Break Switch for Ring Main Unit

    SF6 load break switch applications

     

 

Gas Pressure Gauge With Alarm Function Monitoring alarm barometer For SF6 Load Break Switch

  • Gas Pressure Gauge With Alarm Function Monitoring alarm barometer For SF6 Load Break Switch

    Used to detect the density of SF6 gas in a closed container, widely used in medium voltage switchgear and GIS, can be used in outside hard conditions.
    Small volume, special customized installation interface,convenient and reliable. The pressure interface can be customized according to customer requirements.
    Multiple switch action contacts can be provided according to user requirements.

    Features

    1. The electrical contact switch design realizes accurate, stable and reliable SF6 gas density monitoring function.
    2. With temperature compensation, the compensation performance is stable and the detection accuracy is high.
    3. On-site display values and output contact signals are not affected by external conditions such as altitude and on-site ambient temperature changes.
    4. The core components are imported materials with high precision.
    5. It has good seismic performance.
    6. With up to three groups of contacts, it can realize various options such as overpressure alarm, double alarm or double lock, and the monitoring is more secure and reliable.
    7. The SF6 gas density relay can be inflated, micrometered and calibrated without disassembling the SF6 gas density relay, which is convenient for on-site personnel to perform micrometering and replenishment operations on the SF6 gas density relay, and avoid the sealing surface caused by disassembly. and damage to the sealing ring.
    8. 304 stainless steel is used to make the sealed shell, which is moisture-proof and anti-corrosion.

  • Shell diameter φ60mm
    Shell Material Stainless steel
    Measurement Range 1-2 bar(abs.)
    Measurement accuracy 1.5 grades(at 20℃);2.5 grades(at-40℃ to +60℃)(gas state)
    Working environment Temperature-40℃ to +60℃,Relative humidity≤95%RH
    IP Grade IP65
    Absolute leakage rate ≤1X10-9Pa.m³/(helium leak-check)
    Size of interface M24X1.5(Customize)
    Installation Axial direction
    Weight 0.3kg
    Pressure sensitive component Bourdon tubes
  • sf6 pressure gauge

New Design 35kV 40.5kV Indoor Three Work Positions SF6 Load Break Switch For Ring Main Unit Switchgear

SF6 LBS-40.5KV 230mm

  • New Design 35kV 40.5kV Indoor Three Work Positions SF6 Load Break Switch For Ring Main Unit Switchgear

    FLN36 -40.5 SF6 load break switch use SF6 gas as arc extinguishing and insulating medium. There are three work stations:opening, closing and grounding in the switch. It has small volume, installing easy-to-use, strong environmental adaptability and other characteristics.
    FLN36-40.5 load break switch and FLN -40.5D load break switch plus fuse combination, can be used to protect and control the electric equipments for power supply and transformer substations, which is especially suitable for ring net cabinet, cable branch cabinet and distribution switching substation.

    Normal ambient condition:
    1. Altitude: ≤2000M
    2. Ambient temperature: -40℃-+40℃
    3.Relative humidity: daily average ≤95%, monthly average ≤90%.
    4.Earthquake intensity: ≤8 degree

  • Technical Parameter

    No.
    Item
    Unit
    Data
    1
    Rated voltage
    kV
    40.5
    2
    Rated frequency
    Hz
    50
    3
    Rated current
    A
    630
    4
     
    1 min power frequency withstand voltage
    kV
     
    95
    5
     
    Lighting impulse withstand voltage
    kV
     
    185
    6
     
    Rated short circuit breaking current(peak)
    kA
     
    20
    7
     
    Rated activeload and circuit breaking current
    A
     
    630
    8
     
    Rated transferring current
    A
     
    630
    9
     
    Rated short circuit making current(peak)
    kA
     
    63
    10
     
    Rated cable(line)charging breaking current
    A
     
    10
    11
     
    Cable charge breaking current in earthing fault
    A
     
    30
    12
    Rated withstand current(peak)
    kA
    63
    13
    Short time withstand current(2s)
    kA
    20
    14
    Mechanical life
    Time
    5000

     

  • 40.5KV SF6 load break switch

    35kv 350mm LBS

    35kv 350mm LBS

  •  

FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse

FN7-12DR AC High Voltage Load Break Switch

FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse

  • FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse

    FN7-12DR type indoor AC off-voltage load break switch is applicable to AC 50Hz, rated voltage 12KV in the three-phase AC power system as a load current breaking and closing short-circuit current use, the combination of electrical appliances can open any current up to short-circuit current, can be used as protection.

     

    Feature
    1. Adopting high quality brand new raw materials, full oblique seams, refusing refurbishment
    2. The load switch equipped with grounding switch can withstand short-circuit current
    3. The stainless steel shell is thickened

     

    Ambient condition

    1. Altitude: ≤1000m;
    2. Ambient temperature: -25℃~+40℃;
    3. Relative humidity: daily average ≤95%, monthly average ≤90%;
    4. Earthquake intensity: ≤8 degree;
    5. Applicable occasions should free from inflammables, explosives, corrosives and severe vibration.

    Model Type

    Type Model DS DX L R RA F
    Earthing switch at input terminal Earthing switch at output terminal Interlock device Fuse Impact release Power closing device
    No release FN7-12
    FN7-12DSL
    FN7-12DXL
    FN7-12R
    FN7-12DSLR
    FN7-12DXLR
    With impact release FN7-12RAF
    FN7-12DSLRAF
    FN7-12DXLRAF

    Note: (-)without (△)with

  • Rated voltage (KV) 11
    Max voltage (kV) 12
    Rated current (A) 400/630
    1min P.F withstand voltage (kV) 42/48 42/48
    4s thermal stable current (virtual)(kA) 12.5/20
    Dynamic stable current (peak)(kA) 31.5/50
    Short circuit making current (kA) 31.5/50
    Rated breaking current (A) 400/630
    Rated transfer current (A) 1000/1000
  • Diagram 1 "Wire" load break switch without release

    Diagram 1 “Wire” load break switch without release

     

    Diagram 1 "Wire" load break switch without release

    Diagram 2 “transformer protection” load break switch without release

     

    Diagram 3 Release impact load break switch

    Diagram 3 Release impact load break switch

     

    Diagram 4 CS6 Operating mechanism mounting drawing

    Diagram 4 CS6 Operating mechanism mounting drawing

     

FKRN12-12D / FKN12-12D High Voltage AC Air Pressure Pneumatic Load Break Switch Manufacturer

  • FKRN12-12D / FKN12-12D High Voltage AC Air Pressure Pneumatic Load Break Switch Manufacturer

    FKRN12-12D series pneumatic type load switch, fuse combination electric appliance can divide load current, overload current, the broken wire short circuit current.  This switch is applicable to 12 kv and below three phase power distribution system, as the transformer, cables, overhead line and power equipment control and protection;  Especially suitable for city network, site of the terminal substation and box transformer substation. And suitable for ring network, double radiation power supply unit control and protection.

    Three action principle and operating sequence
    1. Manual operation: switching: operating handle into the operation chain parts of load switch spindle hole according to the panel tip rotation direction,spindle drive the four connecting rod energy storage mechanism make closing spring is compressed, when the agency had dead center, tripping device of gusset plate trip, in closing spring, under the action of switch quickly closing.
    Break-brake: reverse direction rotary operating handle, spindle drive the energy storage mechanism rotation, the energy storage mechanism of self-locking device was points brake lever to unlock, in points brake spring, under the action of switch quickly points brake. Manual mechanism can also fit on electromagnetic shunt tripping device, points brake is just by turning on the power supply.

    2. Electric operation: to electric mechanism and power, as long as a switch or points brake instruction, can automatically load switch and fuse combination electric close, break-brake operations. In addition, electric mechanism side is equipped with shunt tripping device, need points brake, switch on the power, also can finish points brake wipe European oh.

    3. Grounding switch operation: Insert the operating handle into the main shaft of the grounding switch operating chain assembly, according to the panel tip rotation direction can, but the size of hard to be applied to ensure closing in place. Points gate instead. This series of product has compact structure, reasonable design, reliable chain, insulation level high characteristic; Spring energy storage operation mechanism make points, closing speed from operators operating force size influence; Arc in the bell insulated enclosure put out, arc of free gas will not lead to alternate with or to reduce the strength of insulation. Bell insulating cover lower safety barrier, the closure from the charged part, kicked the dog the ring network cabinet protection level, the copper tungsten alloy arc touch off and plum flower form the main contact, make the switch to point is reliable, electric long life. This series of product maintenance easy, easy to operate, reliable operation.

     

    This series of product design and manufacturing load the following standards:
    GB3804 “3-63 kv AC high voltage load switch”
    GB16926 “AC high voltage load switch fuse combination electric”
    GB1985 “AC high voltage isolation switch and earthing switch”
    IEC265 the rated voltage above 1 kv and below kv high-voltage switch”
    IEC420 “AC high voltage load switch – fuse combination electric”

    Normal working condition

    1. The surrounding air temperature is not higher than +40 ℃, no less than -25 ℃.
    2. No more than 1000 m above sea level.
    3. Relative humidity: daily mean no more than 95%, on average no more than 90%.
    4. The surrounding air from corrosive or combustible gas and water vapor and obvious pollution.
    5. No regular violent vibration.

  • FKRN12-12D / FKN12-12D High Voltage AC Air Pressure Pneumatic Load Break Switch Manufacturer

    FKRN12-12D / FKN12-12D High Voltage AC Air Pressure Pneumatic Load Break Switch Drawing

    Structural features:
    1.Load switch, earth switch, fuse and mechanism are on one frame, which can be flexibly combined, compact structure, small volume, convenient and easy installation;
    2.The disconnectors are of direct-acting arrangement, with high dynamic and thermally stable current parameters, and the operation is completed in one time;
    3.With static contact insulation cover, so that the ring network cabinet in the structure of the isolation, eliminating the phase insulation partition, the breakout insulation insert, can prevent the cabinet arc light short circuit accident;
    4.With different live door structure, the back door automatically isolates the breakout after the load switch is tripped, with good protection;
    5.There is a reliable mechanical locking device between load switch, grounding switch and fuse, which meets the requirements of “five-proof”;
    6.It has two forms of manual operation and electric operation with AC and DC operation power supply, which is convenient for realising the requirement of “three remotes” of the power system.

     

FKRN12-12D / FKN12-12D High Voltage AC Air Pressure Pneumatic Load Break Switch Manufacturer