为了对大容量变压器的直流电阻进行快速测量,提高主要供电设备检修的工作效率,需要缩短测量中的充电过程。若要缩短充电过程,只有减小充电时间常数τ。从实用的角度,增加r比较容易实现。增设的附加电阻可按一定方法估算。经过实测证明,快速测量电路制作简单易行,操作简单,能有效解决生产实践中的快速测量问题,具有较高的推广应用价值。%In order to measure the DC resistance of large-capacity transformer rapidly and improve the efficiency of maintenance for major power supply equipment,it is necessary to reduce the charging process of measurement.The only way to shorten the charging process is to reduce the time constant which is τ.The r is easier to increase from a practical point of view.The new additional resistance can be estimated by a certain method.Then,the experimental results show that the fast measurement circuit is simple and easy to make operation which can effectively solve the problem of fast measurement during the production practice,therefore,it is well worthy for extension and application.
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