RK9930 RK9930A RK9930B Programmable Ground Resistance Tester (RK9930 AC 3-30A)

RK9930 series programmed ground resistance tester adopts high speed MCU and large-scale digital circuit design of high performance safety tester, the output current adopts hardware feedback, high speed MCU control technology, so that the output current is stable and reliable. The output current is driven by DDS+ power amplifier, and the output waveform is pure and the distortion is small. It can display current value and resistance value in real time, and has software calibration function, equipped with PLC interface, RS232C, RS485, USB device, USB Host interface, which can be convenient to form a comprehensive test system with computer or PLC.

• Screen:5 "TFT LCD screen;Numeric key:Parameter setting Numeric input;Code switch:Parameter selection and confirmation function;Communication interface:RS232C, RS485, USB;Control interface:HANDLER(PLC)
• Operating temperature, humidity:0℃-40℃,≤75%RH;Test time range setting:0-999.9S;Decision value Sets the upper resistance range:0-510mΩ or 0-600mΩ, resolution: 1mΩ, accuracy: ≤ ± (2% reading value +1mΩ)
• Using a 5-inch LCD display, the display parameters are eye-catching and intuitive, and DDS digital signal synthesis technology is used to produce a stable and pure waveform with low distortion
• Constant current output: the output current stability rate range is within 1%, to avoid the input current and voltage instability and load changes caused by the output current change
• With open circuit alarm function. The maximum test time is 999.9S
• Output frequency 50Hz/60Hz optional. With resistance upper and lower limit alarm function