grub+screws-hnlt.org

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">Newsnet 2022-05-20 11:42
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    湖北大禹汉光真空电器有限公司欢迎您!

    做娱乐游戏主播怎么做-<当前网址>

    型号:VITD24/1250-20

    类型:户外断路器用真空开关管

    品牌:大禹汉光(Dayu Hanguang)

    产地:湖北孝感

    厂家:湖北大禹汉光真空电器有限公司

    价格:面议/电询

    产品详情

    主要技术参数
    电压参数
    额定电压(Ur)kV24
    额定短时(1min)工频耐受电压(Ud)kV79
    额定雷电冲击耐受电压(峰值)(Up)kV145
    额定频率(fr)Hz50
    电流参数
    额定电流(lr)A1250
    额定触头压力下限时的回路电阻μΩ≤30
    额定短路开断电流(lsc)kA20
    额定短路开断电流开断次数Times30
    额定短时耐受电流(lk)kA20
    额定短路持续时间(tk)s4
    额定峰值耐受电流(Ip)kA50
    额定短路关合电流(lIMc)kA50
    额定电缆充电开断电流(Ic)A25
    额定单个电容器组开断电流(lsb)A400
    额定背对背电容器组开断电流(lbb)A400
    机械参数
    运动部分质量kg≤1.5
    触头自闭力N120±50
    额定开距下的触头反力N190±60
    对开关机械特性需求
    触头开距mm12±1
    平均分闸速度(触头闭合位置~75%开距)m/s1.5±0.2
    平均合闸速度(30%开距~触头闭合位置)m/s0.8±0.2
    额定触头压力N2000±200
    触头初压力1400±150
    触头合闸弹跳时间ms≤2
    触头合闸和分闸不同期ms≤1
    分闸触头反弹幅值mm≤2
    寿命
    储存期years20
    机械寿命Times10000
    触头允许磨损厚度mm3

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      在户外真空断路器中会使用到 真空开关管 ,不过只有在某一范围之内的真空度才具备很好的灭弧和绝缘的效果,因此如果开关管在生产的时候,结构不同、封接不同、壳体材料不同、加工方法不同等都是会影响...

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