Zzr Series Earth Grid Resistance Tester

ZZR Series Earth Grid Resistance Tester adopt new pilot frequency AC power, micro-controller and signal process measurement, resolve interference problem, simplify test process, improve accuracy and precision, reduce manual work and cost.
The instrument is applicable for power frequency earth resistance, contact voltage, step voltage, power frequency characteristics and soil resistivity, also for the test of substation earth gridi 4ICi a power generatora micro-wave stationi 10ICi a arresteri 10ICi .
Max test current of the instsrument is 5A, no impact on earth device, and online operation.
Test rangei 0i 150ICi including current post resistancei
Resolutioni 0.001IC
Test errori A i ReadA 2i +0.002ICi
Max output voltagei AC 400V (45Hza 55Hzi dual-frequencyi Sine wave)
Max output currenti AC 5A (45Hza 55Hzi dual-frequencyi Sine wave)
Current output geari 5/4.5/4/3.5/3/2.5/2/1.5/1Ai one gear at every 0.5A, total 9 gears
Anti-interference capability: power frequency 50Hz / 10V
Soil resistivity test rangei 0-999.9IC/M, accuracy:A 2%, resolutioni 0.01IC/M
Test wire demandi Current wire Copper core cross-sectional areaa Y1.5mm2 Voltage wire Copper core cross-sectional areaa Y1.0mm2
Poweri AC 220VA 10i i 50Hz
Sizei 440A 350A 210mm3
Weighti 30kg