Fluke 1621 GEO Earth Ground Tester
Product Summary:
The Fluke 1621 GEO Earth Ground Tester is a rugged, portable instrument designed for reliable ground resistance measurements. With single‑button operation, it performs both 3‑pole Fall‑of‑Potential and 2‑pole tests, automatically detects noise voltage, and warns of hazardous voltages.
Key Features:
Single‑button operation for quick measurements
3‑pole Fall‑of‑Potential and 2‑pole resistance modes
Automatic noise (ghost voltage) detection
Hazardous voltage warning above 30 V
Large backlit display for clear readings
Adjustable limit setting with Pass/Fail alerts
Rugged holster and compact design (113×54×216 mm)
CAT II 600 V safety rating
Applications:
Electrical contractors verifying grounding systems
Utility test engineers on distribution networks
Telecom tower and data‑center grounding audits
Solar and wind power installation commissioning
Preventive maintenance in industrial plants
Product Benefits:
Speeds up site testing with single‑button operation
Ensures accuracy by filtering out stray voltages
Protects users with hazardous voltage warnings
Fits easily in a tool bag for field portability
Limits errors with adjustable Pass/Fail thresholds
FAQs:
Q. How does the Fluke 1621 detect ghost voltages?
It uses automatic noise‑voltage detection to filter out stray voltages, ensuring true ground resistance readings.
Q. Can I measure a ground loop without auxiliary rods?
Yes—use the 2‑pole resistance mode for quick checks when you can’t deploy full Fall‑of‑Potential probes.
Q. What indicates a failed ground test?
If resistance exceeds your preset limit, the large display backlight flashes and an audible alert sounds.