Product Overview: AEMC 6422 Ground Resistance Tester
The Digital Ground Resistance Tester Model 6422 is an efficient and easy–to–use instrument that can measure both 2–pole and 3–pole ground resistance with auto–ranging ability. It features a large LCD that notifies users of low battery status, overrange, and lead reversals. It also comes with 3 safety color coded terminals and can measure voltages up to 600V AC/DC and AC current up to 60A. Powered by 6 x AA alkaline batteries, the Model 6422 digital ground resistance tester is also available in a complete Kit (150ft) version that includes leads, rated for use in underground 50Ohm systems.
| Ground Resistance (2P Mode) | ||||
| Measurement Range | 0.05-99.99Ω | 80.0-999.9Ω | 0.800-9.999kΩ | 8.00-50.00kΩ |
| Resolution | 0.01Ω | 0.1Ω | 1Ω | 0Ω |
| Intrinsic Uncertainty | ± (2%R + 10 ct) | ± (2%R + 2 ct) | ±(2%R + 1 ct) | ±(2%R + 1 ct) |
| Ground Resistance (3P Mode) | ||||
| Measurement Range | 0.50-99.99Ω | 80.00-999.99Ω | 0.800-2.000kΩ | – |
| Resolution | 0.01Ω | 0.1Ω | 1Ω | – |
| Intrinsic Uncertainty | ± (1%R + 10ct) | ± (1%R + 2ct) | ± (1%R + 1ct) | – |
| Measurement Frequency | 128Hz or 256Hz (automatically selected) | |||
| No-load Voltage | ±10 V peak | |||
| Maximum Test Current | 20mA | |||
| Measurement Mode | One shot or continuous | |||
| GENERAL | ||||
| Display | Backlit LCD | |||
| Measurement Mode | 2P (Ω), 3P (Ω) | |||
| Power Supply | (6) AA Alkaline batteries | |||
| Battery Life | > 2,000 x 3P earth measurements at 100 Ω | |||
| Dimensions | 8.78 x 4.96 x 2.75″ (223 x 126 x 70mm) | |||
| SAFETY | ||||
| Safety Ratings | EMC: IEC 61326-1; IEC 61010-2-030 / 600 V CAT IV | |||
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