For example, an arc furnace is nonlinear since it will draw a no sinusoidal current (rich in harmonic's) when a sinusoidal voltage is applied.

例如，电弧炉就是一种非线性负荷，因为加上正弦电压后，它将形成非正弦电流(大量谐波)。

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On the other hand, because of the fluctuating load, such as arc furnace and railway traction locomotive, the voltage of the network will frequently fluctuate and lead to voltage flash.

另一方面，现代配电网上用于冶炼的电弧炉和铁路牵引机车等波动性负荷，会使电网电压频繁波动，造成电压闪变。

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The characteristics of arc furnace are low voltage, big current and nonlinear load. Much negative sequence current is produced during running. As a result, the power net is unstable.

电弧炉具有低电压、大电流而且负荷非线性的特点，在其运行过程中产生大量的负序电流，导致电网不稳定。

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