Z-OVR Cable Impedance Test System

5kA maximum output current (higher overload currents for 2s) Multi-function digital timing system Digital true RMS memory ammeter Solid state switching 200A, 2000A and 5000A loading units Three range outputs on loading units Rugged, compact design Optional trolley mounting of system Secondary injection up to 100A Auxiliary metering input Direct reading CT ratio and polarity The Z-OVR Cable Impedance Test Set is a cable impedance test system for the measurement of impedance of overhead lines and underground cables. The system consists of a separate control unit containing all metering and control functions and an output transformer that provides isolation of the output current and feedback voltage. A current is injected into the line under test and the resultant magnitude and phase angle of the voltage across the line is measured. The current, voltage, phase angle and impedance of the line (Z & X) under test are displayed. In addition, the harmonic content of the voltage and current can be displayed. The unit has data logging facilities using a standard USB memory key. Date, time, current, voltage, phase angle, and frequency are stored to a CSV file on the memory key along with a comment entered using the supplied USB keyboard. Pressing the “store” pushbutton causes a new set of values to be written to the CSV file. The output has three taps (75V, 150V & 300V), allowing the measurement of impedance of a wide range of lines and cables. All metering is true rms. Four current ranges (2.000, 10.00, 20.00 and 100.0A) and three voltage ranges (10.00V, 30.00V and 300.0V) are provided. The output transformer unit uses 6mm safety connectors for all outputs and 4mm safety connectors for inputs. A block of connectors is provided adjacent to the output to allow easy parallel connection of cables for parallel measurements on all three phases. The Z-OVR Cable Impedance Test Set is provided with a set of four 10m 12mm2 duplex measurement cables. These provide a 12mm2 conductor for current injection and a 6mm2 conductor for voltage feedback in each cable. WEIGHT 26 kg DIMENSIONS 450 × 275 × 305 mm SUPPLIED ACCESSORIES Earth lead Spare fuse set Operating manual USB keyboard USB memory key Mains lead 5 metre long 1 x 10m Earth Kelvin connection lead 3 x 10m Overhead Kelvin connection leads Link lead to connect parallel connection block Power and metering interconnection leads 5 metre long OPTIONAL ACCESSORIES Trolley mounting system, Part no. A204-0005