西门子资料专区

简介：
问题: SIMOCODE-DP 3UF5是否可以用于变频器的原边？ 解答: 对于谐波150 Hz, 250 Hz, 350 Hz和450 Hz，所期望的电流检测误差是-5 %。通过平均包括基波分量在内的谐波测量结果，所预期的总误差率在0到5%之间。由于在实际中谐波量相比于基波分量是很低的，通常情况下无需特别修正电流设定。如果出现非常强烈的谐波波动，此时电流设定所期望的总误差百分数（最大-5%）必须降低。上述陈述可应用于额定频率为50或60Hz的电网中。 条目号:21453349 日期:2006-03-28 QUESTION: May SIMOCODE-DP 3UF5 be used on the primary side of frequency convertors? ANSWER: With harmonics 150 Hz, 250 Hz, 350 Hz and 450 Hz the expected current monitoring error is minus 5 %. By averaging the harmonics measuring result including fundamental component the anticipated total error rate is between 0 and 5 %. Because in practice the harmonics content is low compared to the fundamental component, normally no special setting corrections are necessary. In the event of a very intensive harmonics behaviour, a reduction of current setting by the expected total error percentage (max. minus 5 %) must be carried out. These statements are applicable for networks with rated frequencies 50 or 60 Hz. Entry ID:21453349 Date:2005-04-06