不同精度的电压表对发电机稳态电压调整率试验结果的影响

Test Result of Steady State Voltage Adjusting Rate of Generator Affected by Voltmeter with Different Precision

在测量一些稳态电压调整率非常小的电机时 ,会出现测量用电压表的最大绝对误差大于稳态电压调整的范围。因此 ,必须选用精度较高的电压表进行试验测量。

When we measure the electric machines with little steady voltage adjusting rate,the absolute error of the voltmeter reaches out of the range of the steady state voltage adjusting.So,we should choose the voltmeters with high precision.