天气预报15天查询> 其他> 电表为什么加互感器

电表为什么加互感器

更新时间: 2020-11-07 00:00:00     

电表加互感器是为了防止烧坏电表。一般小于100A的不需要加互感器,而大于100A加了互感器之后相当于把大电流变成小电流后再进入电表,这个就不会烧坏电表。加了互感器后读取电表数时应乘以互感器相应的倍数。

关键词: 电表 为什么 互感器

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-607890/ | 耗时:0.7925 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=607890 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=607890 LIMIT 0,1
select * from tbl_Articles_sphinx where id=607890 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(112477,1883336,108254,108313,1071307,3156830,1749507,2561638,107556,2483434,1121366,2182035,1058819,1114444,1117904,109121,108368,2933668,3332348,108857,1662454,2438361,3206423,1049510,333585,1114732,108587,1102443,2024860,2900335) ORDER BY field (ArticleID,112477,1883336,108254,108313,1071307,3156830,1749507,2561638,107556,2483434,1121366,2182035,1058819,1114444,1117904,109121,108368,2933668,3332348,108857,1662454,2438361,3206423,1049510,333585,1114732,108587,1102443,2024860,2900335)