Fluke 1625-2 GEO Earth Ground Tester
- Brand
- Fluke
- Model number
- 1625-2
- Category
- Earth Resistance Testers
Advanced earth ground tester for 3- and 4-pole fall-of-potential, soil resistivity, selective and stakeless testing.
Price and availability on request
Key features
- A unique earth ground tester that performs testing with and without stakes
- Tests 3- and 4-pole fall-of-potential, and 4-pole soil resistivity (with stakes)
- Performs selective earth ground rod testing (one clamp + stakes)
- Performs stakeless earth ground rod testing (two clamps)
- Features Automatic Frequency Control (AFC) to minimize the effect of interference
Specifications
| Memory | Internal memory storage up to 1500 records accessible via USB port |
|---|---|
| Measuring function | Interference voltage and frequency, earthing resistance 3- and 4-pole with/without clip-on current transformer, resistance 2-pole with AC, 2- and 4-pole with DC |
| Display | 4 digit (2999 Digit) - 7 segment liquid crystal display, with improved visibility |
| Operation | Central rotary switch and function keys |
| Operating temperature | -10°C to 50°C (14°F to 122°F) |
|---|---|
| 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. 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 |
| Measuring limits of error - method | Full wave rectification |
|---|---|
| Measuring range | 1 V to 50 V |
| Display range | 0.0 V to 50 V |
| Resolution | 0.1 V |
| Frequency range | DC/AC 45 Hz to 400 Hz sine |
| Accuracy | ±(5% of rdg + 5 digit) |
| Measuring sequence | Approx. 4 measurements/s |
| Internal resistance | Approx. 1.5 MΩ |
| Max. overload | Urms = 250 V |
| Measuring limits of error - method | Measurement of oscillation period of the interference voltage |
|---|---|
| Measuring range | 6.0 Hz to 400 Hz |
| Display range | 16.0 Hz to 299.9 Hz to 999 Hz |
| Resolution | 0.1 Hz to 1 Hz |
| Range | 1 V to 50 V |
| Accuracy | ±(1% of rdg + 2 digit) |
| Measuring method | Current and voltage measurement with probe as IEC61557-5 |
|---|---|
| Open circuit voltage | 20/48 V, AC |
| Short circuit current | 250 mA AC |
| Measuring frequency | 94, 105, 111, 128 Hz selected manually or automatic. (AFC) 55 Hz in function R1 |
| Noise rejection | 120 dB (16 2/3 , 50 , 60, 400 Hz) |
| Max. overload | Urms = 250 V |
| Measuring method | Current and voltage measurement with probe as per EN61557-5 and current measurement in the individual branch with additional current transformer (patent applied for). |
|---|---|
| Open circuit voltage | 20/48 V AC |
| Short circuit current | 250 mA AC |
| Measuring frequency | 94, 105, 111, 128 Hz selected manually or automatically (AFC), 55 Hz (R1) |
| Noise rejection | 120 dB (162/3, 50, 60, 400 Hz) |
| Max. overload | Max. Urms = 250 V (measurement will not be started) |
| Measuring range | 0.020 Ω to 300 kΩ |
| Display range | 0.001 Ω to 2.999 Ω; 3.00 Ω to 29.99 Ω; 30.0 Ω to 299.9 Ω; 0.300 kΩ to 2.999 kΩ; 3.00 kΩ to 29.99 kΩ |
| Resolution | 0.001 Ω; 0.01 Ω; 0.1 Ω; 10 Ω |
| Accuracy | ±(7% of rdg + 2 digit) |
| Operating error | ±(10% of rdg + 5 digit) |
| Additional error because of probe- and auxiliary earth typ. electrode resistance | RH(RS + 2000 Ω)/RETOTAL x 1.25 x 10-6% + 5 digits |
| Measuring error of RH and RS | Typ. of 10% of RETOTAL + RS + RH |
| Measuring time | Typ. 8 sec. with a fixed frequency 30 sec. max. with AFC and complete cycle of all measuring frequencies. |
| Minimal current in single branch to be measured | 0.5 mA; With transformer (1000:1); 0.1 mA; With transformer (200:1) |
| Max. interference current through transformer | 3 A; With transformer (1000:1) |
| Measuring method | Current and voltage measurement |
|---|---|
| Measuring voltage | 20 V AC, square pulse |
| Short circuit current | > 250 mA AC |
| Measuring frequency | 94, 105, 111, 128 Hz selected manually or automatically (AFC) |
| Measuring range | 0.020 Ω to 300 kΩ |
| Display range | 0.001 Ω to 2.999 Ω; 3.00 Ω to 29.99 Ω; 30.0 Ω to 299.9 Ω; 300 Ω to 2999 Ω; 3.00 kΩ to 29.99 kΩ; 30.0 kΩ to 299.9 kΩ |
| Resolution | 0.001 Ω; 0.01 Ω; 0.1 Ω; 10 Ω; 100 Ω |
| Accuracy | ±(2% of rdg + 2 digit) |
| Operating error | ±(5% of rdg + 5 digit) |
| Measuring time | Typical 6 seconds |
| Max. interference voltage | 24 V, with higher voltages measurement will not be started |
| Max overload | Urms max. = 250 V |
| Measuring method | Current- voltage measurement as per IEC61557-4 possible |
|---|---|
| Measuring voltage | 20 V DC |
| Short circuit current | 250 mA DC |
| Formation of measured value | With 4-pole measurement wires on H, S, ES can be extended without additional error.; Resistances > 1 Ω in wire E can cause additional error of 5m Ω/Ω. |
| Measuring range | 0.020 Ω to 300 kΩ |
| Display range | 0.001 Ω to 2.999 Ω; 3.00 Ω to 29.99 Ω; 30.0 Ω to 299.9 Ω; 300 Ω to 2999 Ω; 3.0 kΩ to 29.99 kΩ; 30.0 kΩ to 299.9 kΩ |
| Resolution | 0.001 Ω; 0.01 Ω; 0.1 Ω; 10 Ω; 100 Ω |
| Accuracy | ±(2% of rdg + 2 digit) |
| Operating error | ±(5% of rdg + 5 digit) |
| Measuring sequence | Approx. 2 measurements/s |
| Measuring time | Typical 4 second including reversal of polarity (2-pole or 4-pole) |
| Maximum interference voltage | ≤ 3 V AC or DC, with higher voltages measurement will not be started |
| Maximum inductivity | 2 Henry |
| Maximum overload | Urms = 250 V |
| Formation of measured value | Rdisplay = Rmeasured - Rcompensated |
|---|
| Switch position | RA 4-pole (two clamp Stakeless) |
|---|---|
| Resolution | 0.001 Ω to 0.1 Ω |
| Measuring range | 0.02 Ω to 199.9 Ω |
| Accuracy | ±(7% rdg + 3 digit) |
| Operating error | ±(10% rdg + 5 digit) |
| Measuring voltage | Vm = 48 V AC (primary) |
| Measuring frequency | 128 Hz |
| Noise current (IEXT) | Max. IEXT = 10 A (AC) (RA < 20 Ω); Max. IEXT = 2 A (AC) (RA > 20 Ω) |
| Contents | GEO Earth Ground Tester; User's Manual; Batteries; Quick Reference Guide; USB Cable |
|---|
Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.
About the 1625-2
The Fluke 1625-2 measures earth ground loop resistance using only clamps, only stakes, or one clamp and stakes, so all four methods are covered: fall-of-potential, soil resistivity, selective and stakeless. Clamps and stakes are sold separately or in the 1625-2 kit.
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