Mickcara Etcr9740b lightning tester for zinc oxide arrester

     2.Product Characteristics& 65306;   UsePT secondary voltage is used as reference (secondary method) to measure resistive current.   The electric field intensity signal is used as reference (induction plate method) and current analysis method. Instrument pairThe MOA current signal is analyzed by Fast Fourier Transform (FFT). According to the statistical principle, the corresponding data such as full current Ix, resistive current Ir and primary fundamental peak Ir1p of resistive current can be obtained directly by analyzing the data inside the instrument. And the operation is safe, convenient and fast. It is very convenient to use wireless transmission voltage as reference to measure resistive current.   The instrument is also equipped with rechargeable batteries, calendar clocks, micro printers and data storage.100 groups, RS232 interface.            3.Technical Specifications& 65306;               Product model      ETCR9740B                    Test mode      Three-phase simultaneous measurement/wired/induction/wireless/single current                    Measurement range of leakage current      RMS of 0~10mA, 50Hz/60Hz; Accuracy: +(Reading *5%+5uA)              Accuracy of Resistive Current Fundamental Wave Measurement (Quadratic method without interphase interference)      (+5%+5uA)              Accuracy of Resistive Current Fundamental Wave Measurement (Current method)      (+15%+5uA)              Accuracy of Current Harmonic Measurement      (+10%+10uA)              Current Channel Input Resistance      Less than 2 Omega              Reference Voltage Input Range      25V~250V RMS, 50Hz/60Hz; Accuracy: +(Reading *5%+0.