The Fluke 1625-2 GEO Earth Ground Tester offers data storage and download capabilities via USB port. World class accessories will simplify and speed up testing time.
3- and 4-pole Fall-of-Potential, earth resistance loop testing
4-pole Soil Resistivity testing
Selective earth ground rod testing using 1 clamp
Stakeless earth ground rod testing using 2 clamps
IP56 rated for outdoor use
Rugged carrying case
USB data storage and transfer
Automatic Frequency Control (AFC) – identifies existing interference and chooses a measurement frequency to minimize its effect, providing more accurate earth ground value
R* measurement – calculates earth ground impedance at 55 Hz to more accurately reflect the earth ground resistance that a fault-to earth ground would see
Adjustable limits – for quicker testing
| Storage temperature | -30°C to 60°C (-22°F to 140°F) |
| Temperature coefficient | ±0.1% of reading/°C < 18°C > 28°C |
| Type of protection | IP56 for case, IP40 for battery door according to EN60529 |
| Max voltage | Warning – socket “clamp” to socket E, ES, S or H |
| Urms = 0 V | |
| Sockets E, ES, S or H to each other in any combination, max. Urms = 250 V (pertains to misuse) | |
| Safety | Protection by double and/or reinforced insulation. Max. 50 V to earth per IEC61010-1. 300 V CAT II, Pollution degree 2 |
| Quality standard | Developed, designed and manufactured to comply with DIN ISO 9001 |
| External field influence | Complies with DIN 43780 (8/76) |
| Auxiliary power | 6 x 1.5 V alkaline (IEC LR6 or type AA) |
| Battery life span | With IEC LR6/type AA: typ. 3,000 measurements (RE+RH ≤ 1 kΩ) |
| With IEC LR6/type AA: typ. 6,000 measurements (RE + RH > 10 kΩ) | |
| Dimensions (W x H x D) | 250 x 133 x 187 mm (9.75 x 5.25 x 7.35 in) |
| Weight | ≤ 1.1 kg (2.43 lb) without accessories 7.6 kg (16.8 lb) incl. accessories and batteries in carrying case |
| Case material | Polyester |












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