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10kV 12kV Outdoor medium voltage windproof type cut-out fuse composite drop-out fuse cutout

high voltage drop fuse

 

  • Drop-out fuses are suitable for power systems with a frequency of 50HZ and a rated voltage of 35KV and below, and are installed on the high-voltage side of distribution transformers or on the main lines of distribution. The main function is where the protection performance is not high, it can be used in conjunction with the isolating switch to replace the automatic air switch; it can also be used in conjunction with the load switch to replace the expensive circuit breaker. It also has short circuit protection, overload and isolation circuits.

    The high-voltage drop-out fuse consists of three parts: insulating support, dynamic and static contacts, and fuse tube. The static contacts are installed at both ends of the insulating support, and the fuse tube is composed of an inner arc suppression tube and an outer phenolic paper tube or epoxy glass fiber cloth tube.

    Working principle

    The load drop fuse has added elastic auxiliary contacts and arc extinguishing cover to break the load current. When the drop fuse is in normal operation, the fuse tube is tensioned by the fuse to form a closed position. When a fault occurs in the system, the fault current causes the fuse to be blown quickly and an arc is formed. The arc suppression tube is heated by the arc and decomposes a large amount of gas, which makes a high pressure in the tube, and blows strongly along the pipeline, and the arc is quickly elongated and extinguished. After the fuse is blown, the lower static contact loses tension and turns down, so that the tightening mechanism releases the fuse tube, and the fuse tube falls to form an obvious breaking position. When the load needs to be pulled, use the insulating rod to open the moving contact, at this time the active and static contacts are still in contact, continue to use the insulating rod to pull the contact, the auxiliary contact is also separated, an arc is generated between the outlets, and the arc is extinguished The slit of the cover is elongated, and at the same time, the arc extinguishing cover generates gas, and when the current crosses zero, the arc is extinguished.

    Installation requirements

    1. The fuse should be installed vertically to prevent the arc from falling on the adjacent live parts.
    2. The fuse and the fixed contact should be in contact with each other in a straight line and without inclination.
    3. For drop-type fuses, the axis of the melting tube should be 15~30° from the vertical line, and its rotating part should be flexible, and it should not touch other objects when falling.
    4. The specifications of the fuse should meet the design requirements, there should be no bending, flattening or damage, and the fuse and the contact should be pressed tightly and firmly.
    5. The rated current of the fuse and the fuse (wire or sheet) must be marked on the fuse. The capacity of the fuse should meet the requirements of the protected electrical appliance. The fuse that has not been verified or marked with no rated current is not allowed to be used.

    Normal use environment.

    a) Ambient air temperature: upper limit +40°C, lower limit -30°C;
    b) The altitude does not exceed 1000m;
    c) The maximum wind speed does not exceed 35m/s;
    d) There is no frequent violent vibration.
    2. The product is not suitable for the following places:
    a) Places where there is a danger of burning or explosion;
    b) Places with severe vibration or shock;
    c) Areas with electrical conductivity, chemical gas effect, serious pollution (not exceeding pollution level: Grade III), and salt fog.

    Drop Fuse Applications

     

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LZZBJ9-10C1 10kV Dry type Indoor High Voltage CT current transformer for Switchgear

current transformer

  • LZZBJ9-10C1 10kV Dry type Indoor High Voltage CT current transformer for Switchgear

    The current transformer is a fully enclosed pillar structure, and the external insulation adopts outdoor special epoxy resin. It has the characteristics of arc resistance, ultraviolet resistance, aging resistance, long life, large creepage distance, small partial discharge, and strong overvoltage resistance. The body composed of the primary winding and the secondary winding and its iron core is enclosed in a pouring body of epoxy resin mixture. The primary P1 and P2 ends are led out from the top of the product, and the secondary S1 and S2 ends are sealed in the outlet box from the bottom of the product. Lead out. Pollution level: Grade IV;

    LZZBJ9-10C1 current transformer series current transformers are epoxy resin cast fully enclosed pillar products, suitable for electric energy measurement, current measurement and relay protection in power systems with rated frequency of 50Hz or 60Hz and rated voltage of 10kV. This product complies with IEC60044-1 and GB1208 “Current Transformer” standards

     

    Calibration method
    Before conducting the current transformer error test, it is usually necessary to check the polarity, demagnetization, accuracy and other tests.

    The principle of current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed core and winding. Its primary winding turns are few, and it is strung in the line of the current that needs to be measured, so it often has all the current flowing through the line, and the secondary winding turns are more, and it is connected in series with the measuring instrument and the protection circuit, and the current transformer is always closed in its 2 circuits when it is working, so the impedance of the measuring instrument and the series coil of the protection circuit is very small, and the working state of the current transformer is close to a short circuit.

     

    Types of current transformer

    Types of CT

     

     

  • LZZBJ9-10C1 10kV Dry type Indoor High Voltage CT current transformer for Switchgear

    Rated primary current (A) Accuacy classes combination Rated secondary output(VA) 1s thermal current(kA) Rated dynamic current(kA)
    0.2S(0.2) 0.5S(0.5) 10P10
    5 0.2S/10P10                        0.5S/10P10                        0.2/10P10                 0.5/10P10 10 10 15 0.75 1.8
    10 1.44 3.6
    15 2 5
    20 3 7.5
    25 4 10
    30 5 12.5
    40 6.3 15
    50 8.1 20
    75 16.2 40.5
    100 21.6 54
    150 36 80
    200 45 100
    300
    400
    500 63 130
    600
    800
    1000
    1200 80 160
    1500
    2000
    2500
    3000

    Drawing

    LZZBJ9-10C1 drawing

CKG3-12kv 160A,250A,400A,630A AC Three Pole H.V Vacuum Contactor

  • CKG3-12kv 160A,250A,400A,630A AC Three Pole H.V Vacuum Contactor

    Item No: CKG3-12kv

    Application:

    CKG3/-12 AC vacuum contactors (hereinafter referred to as: contactor) are applied in power network with AC frequency of 50Hz-60Hz, rated voltage of 12kV, and rated current below 630A in the main loop for the remote making and breaking, frequent start and control of AC motor. It is advisable to use them in combination with fuse and protective device to replace vacuum circuit breaker.

    Normal working conditions:

    1) Altitude above sea should not be over 1,000m;

    2) Ambient temperature is -5~40°C;

    3) Average temperature in 24 hour limited below 35°C;

    4) When the highest temperature is 40°C, the relative humidity should not be higher than 50%;

    5) Pollution degree: class 3

     

  • Model CKG3-7.2/160-630
    Main circuit rated voltage(kv) 7.2 7.2 7.2 7.2
    Main circuit rated current(A) 160 250 400 630
    Main circuit making ability(A/10 Ops.) 1600 2500 4000 6300
    Main circuit break-making ability(A/10 Ops.) 1280 2000 3200 5000
    Maximum break ability(A/3 Ops.) 3200 3200 4000 6300
    Mechanical lfe(Ops.) 1000000 1000000 1000000 1000000
    Engineering lock life (Ops.) 100000 100000 100000 100000
    Power frequency withstand voltage for main circuit(kv) 32 32 32 32
    Power frequency withstand voltage for ouxillary circuit(kv) 2.5 2.5 2.5 2.5
    Power frequency withstand voltage for control circuit(kv) 2 2 2 2
    Rated operating frequency)Ops./h) 300 300 300 300
    Engineering lock operate frequency(Ops./h) 30 30 30 30
    Clearance between open contact(mm) 4±0.5 4±0.5 4±0.5 4±0.5
    Over travel(mm) ≥1.2 ≥1.2 ≥1.2 ≥1.2

     

  • CKG3-12kv 160A,250A,400A,630A AC Three Pole H.V Vacuum Contactor

     

  • We are specialty on epoxy resin medium voltage and HVcomponents, such as 12KV, 24 KV, 36KV and 40.5KV switchgear TG3 wall bushing, contactor box, insulators, transducers. 630A, 1250A, 2500A, 3150A and 4000A contactor box, club contact, fix contact, arm contact and jaw contact. 630A and 1250A VS1 circuit breaker. 630A and 1250A ZN85-40.5 circuit breaker. 12KV and 24KV earth switch. KYN28A-12 and KYN61 high voltage switchgear components!

    We will give you best quality and price!

DXN8D INDOOR HV LIVE DISPLAY DEVICE—HOLES SIZES OF 54*32MM

  • Summarize

    This product is used to provide a switchgear equipment circuit voltage information at the installation status to the operator. As a result of its internal circuitry of low-power light-emitting element, which makes low power consumption, more stable performance and higher reliability. For the user test double-loop phase conveniently, indicator(recommend type) panel setting the end of the test phase, meanwhile the frame of indicator (recommend type) shell adopts front end removable. And the user can change the indicator without opening the indicator shell.

    Widely used for indoor 7.2,12,24,40.5kV, frequency of 50Hz high voltage electrical equipment, and supporting the use of the voltage sensor, it can reflect the high voltage live situation, and voltage sensor support, but also to improve the anti-error performance ancillary products.

     

    Executive standard

    GB25081-2010 HV live display device(VPIS)

    DL/T533-93 condensation and pollution test condition for indoor AC HV switchgear and components

    IEC61958:2000 HV prefabricated switchgear assembly and control assembly-live displaying device

     

    Applying environment conditions

    Environment temperature: upper limit value not more than +40℃,lower limit value not lower than -25℃, special area not lower than -35℃.

    Sea level: no more than 1000m.

    Atmospheric conditions: RH daily average value not more than 95%, month average value not more than 90%, steam pressure daily average value not more than 2.2kPa, month average value not more than 1.8kPa.

    Environment condition: no obvious filth, no flammable, no explosive chemical etcing and salt fog place.

  •  

    Outline installation hole dimension

    Voltage indicator selection table

    Indoor HV live display device

  • [Download not found] display unit

VSG/C-12KV Indoor High  Voltage  Side Mounted Vacuum Circuit Breaker

 

  • VSG/C-12KV indoor high voltage vacuum circuit breaker for switchgear 12kV

    Indoor switchgear type VSG vacuum circuit breaker is applicable to 12kv power system, as a protection and control unit of power equipment, industrial and mining enterprises, it can be used for switching loads of various kinds and frequent operation, repeatedly breaking short-circuit current situation. The product adopts new type of circuit breaker, a VSG part can adopt the international brand of embedded pole, the vacuum interrupter and the main circuit part is fixedly sealed into a whole, protect the interrupter from collision, dust and gel image, strong ability to adapt to the environment, greatly reduces the cost of operation and maintenance. The real implementation of the product part of a maintenance free, low maintenance operation mechanism; operating mechanism and circuit breaker body design, after type test, E2 level, M2 level of mechanical electrical life.

    Main technical data

    No. Item Unit Data
    * Type / 口Insulating cylinder

    口Epoxy resin embedded poles

    口Nylon embedded poles

    		 口Upper outlet

    口Side outlet
    1 Rated voltage  

     

    KV

    		 12
    2 Rated short time power frequency withstand voltage(a min) 42
    3 Rated lightning impulse withstand voltage(peak) 75
    4 Rated frequency Hz 50
    5 Rated current A 630，1250 630，1250

     
    6 Rated short-circuit breaking circuit  

    kA

    		 25 31.5
    7 Rated short time withstand current 25 31.5
    8 Rated short-circuit duration s 4
    9 Rated peak withstand voltage  

    kA

    		 63 80
    10 Rated short-circuit closing current 63 80
    11 Power frequency withstand voltage of secondary circuit(1 min) V 2000
    12 Rated single / back-to-back capacitor bank breaking current A 630/400
    13 Switching time  

    ms

    		 20-50
    14 Closing time 35-70
    15 Mechanical life  

    time

    		 M2 level

    10000(630-125-/25-31.5)
    16 Electrical life E2 level
    17 Moving and fixed contacts allow wear accumulation thickness mm 3
    18 Rated closing operating voltage V AC110、AC220

    DC110、DC220
    19 Rated breaking operating voltage
    20 Rated voltage of energy storage motor
    21 Rated power of energy storage motor w 90
    22 Storage time s ≤15
    23 Contact distance mm 11±1
    24 Over stroke 3±1
    25 Contact closing bounce time  

    ms

    		 ≤2
    26 Different phases of three-phase switching ≤2
    27 Average breaking speed  

     

    M/s

    		 Contact opening 6mm 0.9~1.7 0.9~1.7
    28 Average closing speed Contact closing 6 mm 0.6~1.0 0.6~1.0
    29 Switching rebound amplitude mm ≤3
    30 Dominant loop resistance μΩ ≤45(630)

    ≤35(1250A)
    31 Contact closing pressure N 3100~3700
    32 Rated order of operation O-0.3s-CO-180s-CO

  • VSG-C-12 indoor high voltage vacuum circuit breaker for switchgear 12kV

     

     

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DXN-Q 10kv Indoor Live Display High Voltage Charged Display Device

DXN-Q high voltage charged display device LYD105

DXN-Q high voltage charged display device LYD105

  • DXN-Q 10kv Indoor Live Display High Voltage Charged Display Device

    The DXN series indoor high voltage charged display device is composed of three sensors and display(through lead connection), it is applied to certain indoor high volt electric equipment of rated frequency 50Hz and rated volt below 40.5KV, by this device, it could indicate charged condition in circuit, besides, it can be coordinate-operated with electromagnetic lock, which realizes forced lockout of switch handle and controlled by one high volt signal, while, its circuit system is stand-alone and not interfered one another. Just needing the high volt circuit electrified, even if display circuit and latching circuit arise fault simultaneously, the electromagnetic lock still stay in locking state, which could prevent from mishandle or entering into charged spacing.

    Implement the standard DL/T538 “High-voltage live display device”; DL/T593 “Common technical requirements for high-voltage switchgear and control equipment standards”; JB/T10305 “3.6kV~40.5kV high-voltage equipment users Internal organic material pillar insulator technical conditions”; GB/T7354 “Partial discharge measurement”

    Item No: LYD105

    Details:

    1.Rated voltage: 220V

    2.High voltage charged indicator

    3.Application: High voltage electrical transmission

    4.Connect with transducer

    5.Used for switchgear

     

    Working Principle

    The device uses the electric field coupling principle between the high-voltage electric field and the sensor to make inductive (non-contact) measurements at a safe distance. The high-voltage charged display blocking device consists of two parts: the sensor and the display. The sensor has three branches, which are aligned with the “A, B, C” three-phase charged body, without direct contact with the high-voltage charged body, and maintain a certain safety distance;
    When the equipment or network under test is charged, the “A, B, C” three-phase indicator lights up, the “operation” indicator goes out, and a forced blocking signal is output.
    When the equipment or network under test is not energised, the “A, B, C” indicators go out and the “operation” indicator lights up, while the blocking signal is released and the equipment can be operated. The device is controlled by phase separation, and when any phase is energised, the alarm flashes and a forced blocking signal is output.
    When the display loses control power, the display outputs a forced blocking signal to maintain the blocking state. The display is equipped with a “self-test” function, which automatically detects the various functional modules of the sensor and the display, and in the event of any malfunction of the device, the “power” indicator lights up, the “operation” indicator does not light up, and the forced latching signal is always output to maintain the latching state. In the event of any malfunction of the unit, the ‘power’ indicator remains on and the ‘operate’ indicator does not illuminate.

     

  • Item No: LYD105

    DXN-Q high voltage charged display device LYD105

    DXN-Q high voltage charged display device LYD105

     

    About us

    We are specialty on epoxy resin medium voltage and HVcomponents, such as 12KV, 24 KV, 36KV and 40.5KV switchgear TG3 wall bushing, contactor box, insulators, transducers. 630A, 1250A, 2500A, 3150A and 4000A contactor box, club contact, fix contact, arm contact and jaw contact. 630A and 1250A VS1 circuit breaker. 630A and 1250A ZN85-40.5 circuit breaker. 12KV and 24KV earth switch. KYN28A-12 and KYN61 high voltage switchgear components!

    We will give you best quality and price!

     

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

air load break switch

  • FKRN12-12D / FKN12-12D Air Pressure Pneumatic Load Break Switch Product Overview

    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.

    FK(R)N 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”

    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.

    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 Load break switch technical parameters

    FKRN12-12D / FKN12-12D Air pressure pneumatic load break switch dimension reference

    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.

     

KYN61-40.5 High Voltage Armor Type AC Metal-Enclosed Switchgear Panel

KYN61-40.5 Armor Type AC Metal-enclosed Switchgear Housing

KYN61-40.5 High Voltage Armor Type AC Metal-Enclosed Switchgear Panel

  • KYN61-40.5 High Voltage Armor Type AC Metal-Enclosed Switchgear Panel

    Summary

    KYN61-40.5 High Voltage Armor Type AC Metal-Enclosed Switchgear Panel, suitable for three-phase AC 50Hz/40.5kV single-busbar segmented power system, used to receive and distribute electric energy and control, protect and monitor circuits. The switchgear conforms to IEC-298, GB3906, DL404 and other standards. It can be used for industrial and mining enterprises, power plants and substations as the control and protection of electrical facilities, and used in frequently operated places

    Structural features
    1. All-metal modular assembly structure, the cabinet is made of imported aluminum-zinc coated plate with strong anti-corrosion ability, without surface treatment, processed by CNC high-precision equipment, using advanced multi-folding technology, connecting with rivet nuts, High-strength bolt connection, high precision, light weight and good strength.
    2. Wide adaptability and strong interchangeability. The handcart has a working position and a test position, and each position has a positioning and display device, which is safe and reliable.
    3. The cable room is equipped with grounding switch, overvoltage protection device, etc. Fully meet the “five defenses” requirements. Each chamber is provided with a pressure relief channel to ensure personal safety during operation.

    Conditions of use

    1. Ambient air temperature: maximum temperature +40℃. Minimum temperature -15℃.
    2. Relative humidity: The daily average relative humidity: ≤95%, and the daily average water vapor pressure does not exceed 2.2KPa.
    3. Altitude: below 1000m.
    4. Earthquake intensity: no more than 8 degrees.
    5. The surrounding air should not be significantly polluted by corrosive or combustible gas, water vapor, etc.
    6. No violent vibration place.

    Technical parameter

    Item Data
    Rated voltage 40.5kV
    1min frequency withstand voltage (rms) 95kV
    Lightning surge withstand voltage (peak) 185kV
    Rated frequency 50Hz
    Main busbar rated current 2500A
    Main circuit rated current 2500A
    4s rated short-time withstand current 31.5kA
    Rated peak withstand current 80kA
    Enclosure protection class IP4X

     

  • KYN61-40.5KV switchgear drawing

    Height Width Depth
    2400 1200 2600
    2600 1400 2800

     

  • When ordering, the user needs to provide the following information
    1.The main scheme number of the primary line, single bus system diagram, arrangement diagram and floor plan;
    2.Secondary circuit electrical schematic diagram and terminal arrangement diagram;
    3.The model, specification and quantity of the electrical components of the switchgear;
    4.Specification and material of main bus and branch bus;
    5.Name and quantity of spare parts and spare parts;
    6.Special requirements are negotiated with the manufacturer

 

FK10-11 high voltage auxiliary contact

FK10-11 high voltage auxiliary switch

FK10-11 high voltage auxiliary switch

  • FK10-11 high voltage auxiliary contact

    Item No: FK10-11

    Specifications:

    1. Rated voltage: AC 660V

    2. Rated frequency: 50Hz

    3. Rated current: 15A

    Main application:

    This series applies to the HV operating mechanisms switching on, switching off, interlock, and controlling of signal circuit. It also applies to HV switchgears, and can be used as transfer switch or cubicle switch.

  • FK10-11 high voltage auxiliarycontact

    Item No: FK10-11

    Working Conditions

    · Ambient Temperature (-40oC≤ t ≤40oC)

    · Height above Sea Level (h≤3000m)

    · Monthly mean relative air humidity ≤ 90%, daily mean relative air humidity ≤ 95%

    · Oscillatory acceleration 15m/s2

    · Situation of no sharp pounding, no explosion risk, no inductive dust, no air destroying, insulators or corroding metal, and so on.

    About us:

    We are specialty on epoxy resin medium voltage and HVcomponents, such as 12KV, 24 KV, 36KV and 40.5KV switchgear TG3 wall bushing, contactor box, insulators, transducers. 630A, 1250A, 2500A, 3150A and 4000A contactor box, club contact, fix contact, arm contact and jaw contact. 630A and 1250A VS1 circuit breaker. 630A and 1250A ZN85-40.5 circuit breaker. 12KV and 24KV earth switch. KYN28A-12 and KYN61 high voltage switchgear components!

    We will give you best quality and price!

     

  • Item No: FK10-11

    [Download not found]

FK10-11 High Voltage Auxiliary Contact

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