由小水电或柴油发电机组供电时,应如何选择电动机起动方式呢?直接起动能否采用直接起动,主要决定于以下几个方面:1.直接起动,变电站母线电压降不能超过10%。2.小电站供电允许直接起动的电动机最大功率一般为:每一千伏安发电机容量为0.1～0.12千瓦;若是轻载或空载起动,并使最大的电动机首先起动,则每一千伏安发电机容量为0.3千瓦。3.“变压器电动机”组(一台变压器只为一台电机供电)。允许直接起动的电动机容量不大于变压器容 How to select the motor starting mode when it is powered by a small hydropower or diesel generating set? Whether the direct starting can be started directly or not depends on the following aspects: 1. Direct starting, the substation bus voltage drop can not exceed 10%. 2. Small power station to allow direct start of the motor maximum power is generally: each kilovolt generator capacity of 0.1 ~ 0.12 kilowatts; if light or no-load start, and the largest motor first start, then every one kilovolt Generator capacity of 0.3 kilowatts. 3. “transformer motor ” group (a transformer is only for a motor power). Allow direct start of the motor capacity is not greater than the transformer capacity