用金属绑线将CT上的金属编织线与一次导线缠绕在一起，保持等电位。
CT with metal tie cable on a metal braided line and a wire wound together to keep such potential.
电能计量综合误差是由电压互感器的合成误差、电流互感器的合成误差、电能表的误差、电压互感器二次导线压降所引起的计量组成。
There exits a compound error problem in the electrical measurement, which is composed of PT synthetic error, ct synthetic error, electrical energy measurement error and secondary potential of PT.
为了准确反映电力机车的负载电流或短路电流，应将接触导线和正馈线上的电流互感器次边差接。
In order to measure accurately the load of electric locomotives and short circuit current, the secondary side of CTs connected with catenary and feeder should be connected in differential mode.
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