利用测量值判断电压互感器开口三角形接线错误

Application of Measured Value to Judge the Error of Open Triangular Connection of the Voltage Transformer

电压互感器二次侧有 2组线圈 ,一组为星形接线 ,另一组为开口三角形接线。在安装中虽然特别小心 ,但也难免不发生接线错误。当开口三角发生接线错误时 ,一般会产生 2 0 0V电压 ,将危及二次设备安全 ,须尽快发现和解决。利用测量值判断电压互感器开口三角形接线错误是一种较好的方法。

There are two sets of coils at the secondary side of the voltage transformer,one set is star connection and another is the open triangular connection.Special care must be paid in the course of installation,but still connection error can not be avoided.As an error occurs for the open triangular connection,a voltage at 200 V can normally be produced.It will endanger the safety of the secondary equipment and it must be discovered and solved as soon as possible.Application of the measured values to judge the error of the VT open triangular connection is a better method.