Ground Resistance Tester Model 6424
The AEMC INSTRUMENTS Model 6424 is a digital ground resistance tester for electrical safety professionals performing 3-pole and 2-pole resistance measurements with auto-ranging capability.
- Woman-owned · HUB-certified
- Tax-exempt & POs accepted
- Calibration & repair
Overview
The Digital Ground Resistance Tester Model 6424 performs 3-pole ground resistance, 2-pole resistance, AC voltage and current measurements. This direct reading tester is auto-ranging and easy to use – simply connect the leads, press to measure, and read. Features a large backlit LCD display, low battery indicator, and overrange indication. Comes with 3 safety color-coded terminals for easy hookup. Measures voltage up to 600V AC/DC and AC current up to 60A with optional MN72 current probe. Powered by 6 AA NiMH rechargeable batteries. Available in basic unit or complete kits with 150ft or 300ft test leads.
- 3-pole ground resistance measurement
- 2-pole resistance measurement
- AC voltage measurement
- AC current measurement with optional MN72 probe
- Auto-ranging capability
- Large backlit LCD display
- Safety color-coded terminals
- Low battery status indicator
- Overrange indicator
- Stores 52, 62 and 72 percent 3P resistance measurements
- Calculates average and percent deviation of three saved readings
- One shot or continuous measurement mode
Specifications
| Performance | |
| Current Range | (0.5 to 60.00) AAC (requires optional MN72 probe) |
| Ground Resistance (2P Mode) Measurement Range | (0.05 to 99.99) Ω, (80.0 to 999.9) Ω, (0.800-9.999) kΩ, (8.00-50.00) kΩ |
| Ground Resistance (2P Mode) Resolution | 0.01 Ω, 0.1 Ω, 1 Ω, 0 Ω |
| Ground Resistance (3P Mode) Measurement Range | (0.50 to 99.99) Ω, (80.00 to 999.99) Ω, (0.800 to 9.999) kΩ, (8.00 to 50.000) kΩ |
| Ground Resistance (3P Mode) Resolution | 0.01 Ω, 0.1 Ω, 1 Ω, 10 Ω |
| Measurement Frequency | 128 Hz or 256 Hz (automatically selected) |
| Measurement Mode | One shot or continuous |
| Display | Backlit LCD |
| Power | |
| Voltage Range | (0.1 to 600) VAC/DC |
| Voltage Resolution | 0.1 V |
| Voltage Accuracy | ± (1 % R + 1 ct) |
| No-load Voltage | ±10 V peak |
| Power Supply | (6) 1.2 V AA NIMH rechargeable, charging time approx. 6 h |
| Battery Life | >1,500 x 3P earth measurements at 100 Ω |
| Physical | |
| Dimensions | (8.78 x 4.96 x 2.75) in (223 x 126 x 70) mm |
| Connectivity | |
| Data Storage | Stores the (52, 62 and 72) % 3P resistance measurements |
| Other | |
| Ground Resistance (2P Mode) Intrinsic Uncertainty | ± (2 %R + 10 ct), ± (2 %R + 2 ct), ±(2 %R + 1 ct), ±(2 %R + 1 ct) |
| Ground Resistance (3P Mode) Intrinsic Uncertainty | ± (1 % R + 10 ct), ± (1 % R + 2 ct), ± (1 % R + 1 ct) |
| Maximum Test Current | 20 mA |
| Safety Ratings | EMC: IEC 61326-1; IEC 61010-2-030 / 600 V CAT IV |
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Calibration & repair from FarrWest
Calibration, repair and maintenance for your detection instruments.
