Description
The Ground Resistance Tester Model 6418 measures ground rod, busbar, and grid resistance and impedance without the use of auxiliary rods. Clamp-on ground resistance testers can be used in multi-grounded systems without disconnecting or de-energizing the ground system under test. The Model 6418 simply clamps around the grounding electrode or conductor and measures the resistance to ground. By performing measurements on intact ground systems, the user also verifies the quality of the grounding connections and bonds. Resistance and continuity of grounding loops around pads and buildings may also be measured.
| Ground Resistance Measurement | ||
| Measurement Range | Resolution | Accuracy |
| 0.010 to 0.099Ω | 0.001Ω | ±(1.5%Reading +0.01Ω) |
| 0.10 to 0.99Ω | 0.01Ω | ±(1.5%Reading +0.02Ω) |
| 1 to 49.9Ω | 0.1Ω | ±(1.5% Reading +0.1Ω) |
| 50.0 to 149Ω | 1Ω | ±(2.5% Reading +2Ω) |
| 150 to 245Ω | 5Ω | ±(5% Reading +10Ω) |
| 250 to 440Ω | 10Ω | ±(10% Reading +20Ω) |
| 450 to 640Ω | 10Ω | ±(15% Reading +20Ω) |
| 650 to 1200Ω | 50Ω | ±(20% Reading +100Ω) |
| Test Frequency | 2083Hz | |
| Maximum Overload | Permanent current: 100 max. 50/60Hz; 20A at 800Hz | |
| Current Measurement Range (Auto-Ranging) | ||
| Measurement Range | Resolution | Accuracy |
| 0.50 to 9.995mA | 50µA | ±(2% Reading +200µA) |
| 10.00 to 99.90mA | 100µA | ±(2% Reading +100µA) |
| 100.0 to 299.0mA | 1mA | ±(2% Reading +1mA) |
| 0.300 to 2.990A | 10mA | ±(2% Reading +10mA) |
| 3.000 to 20.00A | 100mA | ±(2% Reading +100mA) |
| General Features | ||
| Display | OLED, 152 segments 48x39mm | |
| Memory | 300 measurements | |
| Alarm | 2 separate alarms (Ω and A) | |
| Power Source | 4x1.5V LR6 (AA) alkaline batteries or 4 NiMH batteries | |
| Battery Life | 12 hours or 1440 30-seconds tests approx. | |
| Jaw Opening | 1.26” (32mm) max or 1.18 1.57" (30 x 40mm) or 0.79 x 2.17" (20 x 55mm) bar | |
| Dimensions | 11.8 x 4.2 x 2.2” (300 x 106 x 56mm) | |
| Weight (with Battery) | 2.6 lbs (1.2Kg) | |
| Operating Temperature | -4° to +131°F (-20 to +55°C) | |
| Storage Temperature | -22° to +158°F (-30 to +70°C) | |
| Relative Humidity | Up to 90% @ 40°C | |
| Ingress Protection (IP) | IP 40 | |
| EMC | EN 61326-1 | |
| Safety Compliance | IEC 61010-1, EN 61010-2-32, Pollution Degree 2, 100V CAT IV | |
User Manuals
Quick Start Guides
Datasheets
Comparison Charts
Application Notes
Workbooks
Forms
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Stored Measurement Results Form
Technical Bulletins