MTJ-7305, earth contiunity tester is used to measure the internal resistance of electrical equipment. It reflects the contact resistance between the exposed parts of electrical equipment and the total grounding terminals of electrical equipment.In order to eliminate the influence of the contact resistance on the test, the ground resistance tester uses the four end measurement method, that is, the electric current is added between the exposed and the total grounding terminals of the measured electrical apparatus. Then measure the voltage at both ends and calculate the resistance value.
TECHNICAL PARAMETERS
| Model | MTJ-7305 |
| Output Current | 3～30A±（2%±2dgts） |
| Test Voltage | AC 6V |
| Ground Resistance Range | 1～300mΩ Output Current(3～10A) 1～150mΩ Output Current(10A～30A) ±（2%±2dgts） |
| Test Time | 0.1～999.9s ±（2%±2dgts） |
| LCD | 16 * 2 line backlight LCD |
| Remote Control Device | Input: Test,Reset Output: Pass,Fail,Test-in-Process |
| Resolution | Current:0.01A Resistance:1mΩ |
| Test Alarm | Buzzer, indicator light |
| Correction Method | Software correction |
| Memory Device | Memory current, resistance, time and other set values |
| Temperature / Humidity | 0℃～40℃/ ≤75%RH |
| Size / Weight | W×H×D: 280mm×100mm×380mm / 10kg |
