ETCR3200 - Dual-Clamp Ground Resistance Tester
I. Product Introduction
ETCR3200 dual-clamp multifunctional ground resistance tester is specially designed and manufactured for on-site measurement of ground resistance, soil resistivity, ground voltage, ground wire leakage current, AC current, and DC resistance. It adopts digital processing technology, precision 4-wire method, 3-wire method, and simple 2-wire method, selection method, and dual-clamp method to measure ground resistance, with large-diameter current clamp design. It can measure grounding systems with large grounding down conductors, and can flexibly and accurately measure any ground resistance value in various complex grounding situations such as single-point and mesh grounding. When measuring parallel grounding, there is no need to disconnect any parallel grounding electrode, greatly improving measurement convenience. It incorporates FFT (Fast Fourier Transform) technology and AFC (Automatic Frequency Control) technology, with unique anti-interference capability and environmental adaptability, and strong repeatability of tests, ensuring high precision, high stability, and high reliability for long-term measurements. It is widely used in power, telecommunications, meteorology, oil fields, construction, lightning protection, and industrial electrical equipment for ground resistance, soil resistivity, ground voltage, and AC current leakage current measurement.
ETCR3200 dual-clamp multifunctional ground resistance tester consists of a host, current clamps, monitoring software, test leads, auxiliary ground rods, communication cables, etc. The host features a large LCD display, blue screen backlight, bar graph indication, clear at a glance. It can store 2000 sets of data, and through monitoring software, it can achieve historical query and online real-time monitoring functions, dynamic display, alarm indication, automatic shutdown, and has functions such as historical data reading, viewing, saving, reporting, and printing.
II. Technical Specifications
1. Reference Conditions and Operating Conditions
| Influence Quantity | Reference Conditions | Operating Conditions | Remarks |
| Ambient Temperature | 23℃±1℃ | -10℃～40℃ | ---- |
| Ambient Humidity | 40%～60% | ＜80% | ---- |
| Meter Working Voltage | 9V±0.1V | 9V±1.5V | ---- |
| Auxiliary Ground Resistance Value | ＜100Ω | ＜30kΩ | rC, rP |
| Interference Voltage | None | ＜20V | ---- |
| Interference Current | None | ＜2A | ---- |
| Electrode Spacing when Measuring R | a＞5d | a＞5d | ---- |
| Electrode Spacing when Measuring ρ | a＞20h | a＞20h | ---- |
