亚洲国产综合精品2020

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Hello! welcomeZhejiang Xikai Electric Co. , Ltd.
Zhejiang Xikai Electric Co. , Ltd.
Contact
Zhejiang Xikai Electric Co. , Ltd.
Mailbox:wzxikai@wzxikai.com
Tel:+86 577 61666 016
address:No.271, Weishiqi Road, Yueqing Economic Development Insuatrial Zone, Yueqing, Zhejiang.

product list

Indoor high voltage load switch
14/5000 Indoor vacuum circuit breaker
Outdoor vacuum circuit breaker
Outdoor high voltage load switch
Outdoor high voltage disconnector
Outdoor drop fuse
High voltage current limiting fuse series
High voltage complete set
current position:Home>Product Center

Product Center

    • LW38-40.5 outdoor high voltage AC Sf6 circuit breaker

    LW38-40.5 outdoor high voltage AC Sf6 circuit breaker

    LW38-40.5 outdoor AC high voltage sulphur hexafluoride circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor high-voltage power distribution switchgear with three-phase AC 50Hz and rated voltage of 40.5kV. It can be used to divide and match rated current and fault current, cast and cut capacitor group and conversion line. It is especially suitable for frequent operation or as a contact breaker. The circuit breaker uses SF6 gas as the arc extinguishing and insulating medium, and is installed outdoors. It adopts an elevated porcelain column structure. The circuit breaker complies with GB 1984-201 4 “High Voltage AC Circuit Breaker”, DL/T 402-2016 “High Voltage AC Circuit Breaker” and JB/T 9694-2008 “High Voltage AC Sulfur Hexafluoride Circuit Breaker” and other technical standards.

    Environmental Conditions

    1、 Altitude: no more than 1000m, if the altitude is higher than 1000m, the rated insulation level should be corrected accordingly;

    2、 Ambient temperature: upper limit +45℃ , lower limit -40℃ , maximum daily temperature difference of 25K;

    3、 Humidity: average daily relative humidity ≤ 95%, average monthly relative humidity ≤90%;

    4、Solar radiation intensity: ≥0.1W/cm2;

    5、Wind speed: 34m / s;

    6、Wind pressure: 700Pa;

    7、Pollution level: e level;

    8、Ice thickness: ≤10mm;

    9、 Tolerance to earthquake: horizontal acceleration 0.3g, vertical acceleration 0.2g



    Main Features

    1、 Using SF6 gas to extinguish arc and insulation, excellent insulation performance;

    2、The structure is simple, and the maintenance period is long;

    3、Strong breaking ability and long mechanical life;

    4、 Either built-in or external current transformer, high measurement accuracy;

    5、 Built-in intelligent wet temperature controller to ensure safe and reliable operation of circuit breakers in high and cold regions;

    6、 The overall sealing design of the housing has been improved to effectively prevent the bad weather caused by sandstorms and other bad weather.


    Technical Information

    Technical Specification

     

     

     

    Rated frequency

     

    Hz

    50

    Rated voltage

     

    kV

    40.5

    Rated current

     

    A

    1250、1600、2000

    Rated short-circuit breaking current

    kA

    31.5

    Rated short circuit closing current

    kA

    80

    Rated short-time withstand current

    kA

    31.5

    Rated peak withstand current

     

    kA

    80

    Rated out-of-step breaking current

    kA

    10

    Rated short circuit duration

     

    S

    4

    Rated short-circuit breaking current breaking times

    Times

    1 0

     

     

    Rated short-time power frequency withstand voltage

     

     

    Interphase and ground (dry test)

    kV/min

    95/1

     

    Fracture (dry test)

    kV/min

    118/1

     

    Phase to ground (wet test)

    kV/min

    80/1

     

    Auxiliary circuit to ground

    kV/min

    2/1

     

    Rated lightning impulse withstand voltage

     

    Phase to ground

    kV

    185

     

    Fracture

    kV

    215

    Rated operating voltage and auxiliary circuit rated voltage

    V

    AC220、DC220

    Main loop resistance

     

    Rated current 1600A and below

    μΩ

    ≤90

     

     

    1600A Rated current greater than 1600A

    ms

    ≤40

    Closing time

     

    Under AC voltage

    ms

    ≤100

     

     

    Under DC voltage

    ms

    55~100

    Opening time

     

    Under AC voltage

    ms

    ≤60

     

     

    Under DC voltage

    ms

    30~65



     

     

    Continued on the table

    Technical Specification

     

     

     

    Combined-minute time

     

    ms

    ≥120(Operating state) ≥120

    Split-time

     

    ms

    ≤50

    Full break time

     

    ms

    ≤78

    Rated operation sequence

     

    ms

    O-0.3S-CO-180s-CO

    Moving contact stroke

     

    mm

    96±2.5

    Contact opening distance

     

    mm

    60±1.5

    Closing buffer stroke

     

    mm

    10±2

    Phase-to-phase closure

     

    ms

    ≤3

    Phase-to-phase closure

     

    ms

    ≤3

    Phase spacing

     

    mm

    725

    SF6 annual air leak rate

     

    %

    ≤0.5

     

    SF6 gas moisture content (ppm, gauge pressure at 20 ℃)

    Handover acceptance value

    V/V

    ≤150

    Running value

    V/V

    ≤300

    SF6 gas rated pressure (20 ° C gauge pressure)

    Mpa

    0.45

    SF6 gas supplemental pressure (gauge pressure at 20 °C)

    Mpa

    0.42

    SF6 gas blocking pressure (gauge pressure at 20 ° C)

    Mpa

    0.4

    Mechanical life

     

    Times

    6000

    SF6 gas weight

     

    kg

    5

    Weight

    With CT

    kg

    800

     

    Without CT

    kg

    1000


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    亚洲国产综合精品2020