ETCR9600 Low Voltage Current Transformation Ratio Tester          Features:      ETCR9600 Low Voltage Current Transformation Ratio Tester can widely applied in 380V/220V electric power system, for conveniently and fast online measurement of current transformer in measurement devices, and measurement of current and leakage current in 380V/220V electric power system. Without power cut, it can also accurately measure the current transformation ratio, ratio difference, angle difference, phase, polar. Provide operators with a safe, accurate and convenient tester. Its application will bring remarkable economic and social benefits in power supply management for electric power enterprise            Specifications:               Model    Range    Clamp Size        CT1    CT2    CT1    CT2        ETCR9600    0-200A    0-5A    35mm×40mm    25mm×30mm                   Instrument Structure:         It consists of main tester, primary current clamp CT1 and secondary current clamp CT2. The interfaces of CT1 and CT2 are at the top of main tester. (Different appearance of CT1 for different models)                      Working Principle:           The working principle diagram is shown as right. In 380V/220V electric power system,without power cut, using CT1 and CT2 to sample the primary and secondary current respectively, then process, amplify, filter and A/D convert this sample signal, after that, the signal will be sent to CPU for process, in the meanwhile, the current transformation ratio and ratio difference will display (on the basis of 5V secondary current). In this way to fulfill conveniently and fast online measurement of current transformer ratio and ratio difference, etc..                      Working Environment:           1. Environment temperature:  -25& 8451;-45& 8451;           2. Relative humidity: below 80%RH           3. Rated power: 50HZ±2HZ           4. Rated voltage: 3×220V/380V           5. External interference: no strong electric and magnetic field interference                                 Techical Specifications:                             1. Resolution& 65306;0.01mA           2. CT1 accuracy& 65306;±2%rdg±3dgt (20& 8451;±5& 8451;, below 70%RH)           3.