Describing the specialities of the starting motor brushes are of short-time duty system, big current density and the contact voltage drop must be as small as possible.
汽车启动机电刷具有短时工作制、电流密度大及接触压降小的特点。
In practical projects, while an asynchronous motor starting, the drop of voltage on the bus bar must be within the limits which is stipulated by the national standard.
在工程实际中，电动机起动时引起的母线电压下降不能超过规定值。
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