摘要
中压电流互感器主要参数选择时应根据回路最大工作电流、外部短路电流或最大保护动作电流整定值初步选择变比和额定准确限值系数,合理选择额定动、热稳定电流。根据实际二次回路负荷选择二次绕组额定输出容量,必要时需要验算二次感应电势,中压电流互感器准确限值系数可以按规范公式进行修正。
In selecting the main parameters of MV current transformer, the rated dynamic and thermal stable current should be reasonably selected based on the circuit maximum working current, external short circuit current, and maximum protection setting current for initial choice of rated and accuracy limitation coefficient. Secondary winding rated output capacity is selected according to the secondary loop actual load selection. When necessary, it requires to calculate the secondary induction potential. MY current transformer accuracy limita- tion coefficient can be modified according to the standard formula.
出处
《电力与能源》
2016年第5期652-655,共4页
Power & Energy
关键词
电流互感器
参数选择
短路电流
current transformer
parameter selection
short circuit current
