Waveshape character and pile defect for model pile tests 桩身缺陷模型桩模拟试验与动测波形特征
2.
A single waveshape cannot be representative of a lightning strike and so one is not specified 单一波形不能代表一个直击雷,因而没有作定义。
3.
A deliberate change in waveshape , introduced either to counteract the expected effect of a subsequent transmission path or to render the signal less susceptible to noise 有意引入的波形变化,以抵消其后传输通道的畸变作用或减小噪声对信号的影响。
4.
These devices would need to be tested to a peak current whilst simultaneously measuring the vpl . the class 2 test accomplishes this requirement . the waveshape is defined , not the charge q 对这类型的设备进行峰值电流的测试,同时测量其电压保护水平( vpl 。等级2测试规定了这些要求,并对波形进行了定义,但没对电荷q进行定义。
5.
However , by the time a lightning strike has traveled through the distribution network , surge arrestors will have dissipated a proportion of the charge , network impedance will have shaped the impulse and the residual energy can be represented in terms of its waveshape , and its peak current which is what will be present at a service entrance 然而,雷击经过电力网络进行传送以后,避雷放电器会将一部分能量泄放掉,网络的阻抗也会对电涌进行修整,而残余的能量将可以以它的波形来体现,其峰值电流也就是建筑物进入端将会出现的情况。