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40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High - Speed Air Circuit Breaker

Categories High Voltage Circuit Breaker
Brand Name: Tianan Electric
Model Number: LW8-40.5
Place of Origin: CHINA
MOQ: 1set
Price: Pending
Payment Terms: T/T, L/C, D/A, D/P
Supply Ability: 1000sets per year
Delivery Time: 35 work days
Packaging Details: wooden cases
Function: Overcurrent Protection
Rated current: 2000
Rated voltage: 40.5KV
Mechanical endurance: 5000 Time
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    40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High - Speed Air Circuit Breaker

    40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High-Speed Air Circuit Breaker


    Overview

    LW8-40.5 Type Outdoor AC HV SF6 Circuit Breaker is a kind of outdoor HV electrical equipment, three-phase, AC 50Hz. it is used not only for control and protection for 35kV power transmission and distribution system, but also for connecting circuit breaker and opening and closing capacitor bank, as well as for measurement and protection when it is equipped with current transformer.

    This circuit breaker is equipped with CT14 type spring operating mechanism. And it is conformed to the requirements of the standard of GB1984-89 and IEC56 .


    Application environment
    a. Altitude to be not more than 1000m.
    b. Ambient temperature: -30ºC - + 40ºC, the average value of 24H to be not more than 35ºC;
    c. Relative humidity: the daily average value to be not more than 95%, monthly average value to be not more than 90%,
    d. Speed of wind: not more than 35km/s
    e. Contamination condition to be III grade, porcelain bushing creepage distance shall be 1050 mm (nominal creepage ratio to be not less than 25mm/kV);
    f. The ambient air should be free of the flammable material, explosive danger, chemical corrosive and intensive shake.


    Table 1

    No.ItemUnitParameter
    1Rated voltagekV40.5
    2Rated insulation level1min power frequency withstand voltagekV185/215(fracture)
    Lightning impulse withstand voltage95/118(fracture)
    3Rated currentA2000
    4Mechanical endurancetime5000
    5Rated pressure of SF6 gas(20ºC meter pressure)Mpa0.45
    6Locking pressure (20ºC meter pressure)Mpa0.40
    7Lowest ambient temperatureºC-30
    8Rated short-circuit breaking currentkA31.5
    9Rated short-circuit making current(peak)kA80
    10Rated short time withstand current(thermal current)kA31.5
    11Rated peak withstand current(dynamic current)kA80
    12Rated out-of-phase breaking currentkA7.9
    13Breaking times of the rated short-circuit breaking current:time16
    14Close times≤0.1
    15Open times≤0.06
    16Rated operation sequenceO-0.3s-CO-180s-CO
    17Rated breaking/opening current of single capacitor groupA400
    18Last time of short circuit currents4
    19SF6 leakage rate (yearly)≤1
    20Moisture Content of SF6 gas(20ºC)Ppm(v/v)≤150
    21Rated operating voltage of spring operation mechanism
    Voltage of closing and opening coilVAC 220, 380
    DC:48, 110 , 220
    Voltage of energy storage motorVAC 220
    DC 220
    22Weight of SF6 gaskg8
    23Weight of circuit breaker (including operation mechanism)kg1400


    Table 2

    No.ItemUnitTechnical RequirementsTest conditions and methods
    1Travel of movable contactmm95±2Measurement of movable contact travel refer to darawing12
    2Clearance between contactsmm605±1.5Measurement of Clearance between movable and fixed contact refer to drawing 12a
    3Three-phase switch-on asynchronyms≤3Measurement of pole distance difference between movable and fixed contact refer to darawing14
    4Three-phase switch-off asynchronyms≤2Measurement of pole distance difference between movable and fixed contact refer to drawing 15
    5Resistance of main loopμΩ≤120Measurement to DC voltage drop method, put in 100A
    6Speed at instant of contacts touchingm/s3.2±0.2Rated voltage and measurement method refer to drawing 14
    7Speed at instant of contacts disconnectingm/s3.4±0.2Rated voltage and measurement method refer to the drawing 15
    8Cuisine stroke of makingmm10+0.5 -0.1Refer to drawing 6 under the closing status
    9positioning gap of Cuisine stroke of makingmm1-2Refer to drawing 6 under the closing status
    10Partial charging
    40.5kV
    25.7kV
    PC20At rated gas pressure, use partial instrument to put 40.5kV between two outgoing wires for 1min, then drop to 25.7kV equably
    PC10
    Quality 40.5KV Outdoor Frame - Type SF6 Circuit Breaker / High - Speed Air Circuit Breaker for sale
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