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目前矿用直流架线电机车有相当一部分应用了可控硅脉冲调速,与旧式串阻降压调速相比,有许多优点。然而在改进后的大部分电机车中,其电制动还是采用比较简单的不可调的动力制动方式。由于制动力不能调整,使用很不方便。为了进一步完善电机车的制动性能,在原KTA-190/250型调速装置中作了改进试验。经一段时间的使用,效果尚好。现将改进情况介绍如下。
At present, a considerable part of mine DC frame electric locomotive pulse speed controllable silicon, compared with the old series buck stepped speed control, there are many advantages. However, in most of the improved electric locomotives, the electric brake still adopts the relatively simple non-adjustable dynamic brake mode. Due to the braking force can not be adjusted, very inconvenient to use. In order to further improve the braking performance of the electric car, improved test was made in the original KTA-190/250 speed control device. After a period of use, the effect is still good. The improvement is introduced below.