当供电电压降低到0.1倍额定电压以下，且持续时间不超过1分钟，我们认为发生了电压中断，电压中断是一种短时间电压变动现象；造成电压中断的原因可能是系统故障、用电设备故障或控制失灵等。
电能质量扰动主要包括谐波、电压暂降、电压暂升、电压中断、电压波动、暂态振荡、谐波暂升和谐波暂降等电能质量问题。
Power quality disturbances mainly include harmonics, voltage sags, voltage swells, voltage interrupts, flickers, oscillation transients, voltage sags with harmonic and voltage swells with harmonic.
在高技术集中的地区，如硅谷，供电质量将是优先考虑的重点，因为电压冲击及短时中断可能造成严重破坏。
In areas with high-tech clusters, such as Silicon Valley, the quality of power is a priority, because of the damage voltage surges and brief interruptions can cause.
此中初始化包括：调解堆栈指针、需要使用的内部数据存储器的初始化、设置数控电源的开机输出电压以及CPU中断部分设置。
Initialized which include: adjusted stack pointer, the need to use the internal data memory of the initialization, set up the boot nc power output voltage and CPU interruption of the set.
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