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Fluke 1625-2 Advanced GEO Earth Ground Tester

 
Fluke 1625-2
Catalog #: 4325162
         
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ADVANCED GEO EARTH GROUND TESTER

Features

  • 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
  • 3- and 4-pole Fall of Potential, earth resistance loop testing
  • Professional carrying case
  • USB data storage and transfer
In addition, the Fluke 1625-2 offers these advanced features:
  • 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
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Sale: $3,299.99
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Compare Products in this Series

Product Name Type Display (3 Pole Testers) Ground Resistance Range Availability Price
1625-2
1625-2
ADVANCED GEO EARTH GROUND TESTER
3 Pole, 4 Pole Digital 299.9 K Ohms
1623-2 KIT
1623-2 KIT
BASIC GEO EARTH GROUND TESTER, KIT
3 Pole, 4 Pole Digital 19.99 K Ohms
1623-2
1623-2
BASIC GEO EARTH GROUND TESTER
3 Pole, 4 Pole Digital 19.99 K Ohms
1625-2 KIT
1625-2 KIT
ADVANCED GEO EARTH GROUND TESTER, KIT
3 Pole, 4 Pole Digital 299.9 K Ohms
1621 KIT
1621 KIT
EARTH GROUND TESTER KIT
3 Pole Digital 2 K Ohms
1621
1621
EARTH GROUND TESTER
3 Pole Digital 2 K Ohms
Fluke 1625-2 Advanced GEO Earth Ground Tester

Fluke 1625-2 Advanced GEO Earth Ground Tester

         
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Product Information

The new Fluke 1623-2 and 1625-2 GEO Earth Ground Testers offer data storage and download capabilities via USB port. World class accessories will simplify and speed up testing time.

Stakeless testing

The Fluke 1623-2 and 1625-2 earth ground testers are able to measure earth ground loop resistances using only clamps. With this test method, two clamps are placed around the earth ground rod and each are connected to the tester. No earth ground stakes are used at all. A known, fixed voltage is induced by one clamp and the current is measured using the second clamp. Then the tester automatically determines the resistance of the earth ground rod.

This test method only works if a bonded earth ground system exists for the building or structure under test, but most are. If there is only one path to ground, like at many residential applications, the Stakeless method will not provide an acceptable value and the Fall of Potential test method must be used.

With Stakeless testing, the earth ground rod does not need to be disconnected—leaving the bonded earth ground system intact during test. Gone are the days of spending time placing and connecting stakes for each earth ground rod on your system a major time saver. You can also perform earth ground tests in places you’ve not considered before: inside buildings, power pylons, or anywhere you don’t have access to soil.

The most complete testers

The Fluke 1623-2 and 1625-2 are distinctive earth ground testers that can perform all four types of earth ground measurement:

  • 3- and 4-Pole Fall of Potential (using stakes)
  • 4-Pole Soil Resistivity testing (using stakes)
  • Selective testing (using 1 clamp and stakes)
  • Stakeless testing (using 2 clamps only)

The testers are also easy to use. For each test, the testers inform you which stakes or clamps need to be connected and the large rotary switch can be used even with a gloved hand.

This for the Fluke 1625-2 BASIC. It only includes the Fluke 1625-2 tester and test leads.

The complete model kit Fluke 1625-2 KIT comes with the 625-2 tester, test leads, 4 earth ground stakes, 3 cable reels with wire, 2 clamps, batteries, and manual all inside a professional Fluke carrying case.

What's In The Box

  • Fluke 1625 tester
  • 2 test leads
  • Batteries
  • Users manual

Specifications

General 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
Temperature Range
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. 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
Measurement of Interference Voltage DC + AC (UST)
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
Measurement of Interference Frequency (F)
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)
Earthing Resistance (RE)
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
Electrical Measurement Specifications
Intrinsic Error or Influence Quantity Reference Conditions or Specified Operating Range Designation Code Requirements or Test in Accordance with the Relevant Parts of IEC 1557 Type of Test
Intrinsic error Reference conditions A Part 5, 6.1 R
Position Reference position ±90° E1 Part 1, 4.2 R
Supply voltage At the limits stated by the manufacturer E2 Part 1, 4.2, 4.3 R
Temperature 0°C and 35°C E3 Part 1, 4.2 T
Series interference voltage See 4.2 and 4.3 E4 Part 5, 4.2, 4.3 T
Resistance of the probes and auxiliary earth electrodes 0 to 100 x RA but ≤ 50 kΩ E5 Part 5, 4.3 T
System frequency 99% to 101% of the nominal frequency E7 Part 5, 4.3 T
System voltage 85% to 110% of the nominal voltage E8 Part 5, 4.3 T
Operating error B = ±(|A| + 1,15 √E21 E22 E23 E24 E25 E26 ) Part 5, 4.3 R
B[%] = ± B/fiducial value x 100%

A = intrinsic error
En = variations
R = routine test
T = type test
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
30.0 kΩ to 299.9 kΩ
Resolution 0.001 Ω
0.01 Ω
0.1 Ω
1 Ω
10 Ω
100 Ω
Accuracy ±(2% of rdg + 2 digit)
Operating error ±(5% of rdg + 5 digit)
Measuring time Typical 8 seconds with a fixed frequency 30 sec. max. with AFC and complete cycle of all measuring frequencies
Additional error because of probe-and auxiliary earth electrode resistance RH(RS + 2000 Ω)/RE x 1.25 x 10-6% + 5 digits
Measuring error of RH and RS Typ. 10% of RE + RS + RH
Max. probe resistance ≤ 1 MΩ
Max. auxiliary earth electrode resistance ≤ 1 MΩ

Automatic check if error is kept within the limits required by IEC61557-5.
If after a measurement of probe-, auxiliary earth electrode- and earthing resistance, a measurement error of higher than 30% is assumed because of the influencing conditions, the display shows a warning symbol and a notice that RS or RH are too high.

Automatic Switchover of Measuring Resolution in Dependence to Auxiliary Earth Electrode Resistance RH
RH with Umeas = 48 V < 300 Ω
< 6 Ω
< 60 Ω
< 600 Ω
RH with Umeas = 20 V < 250 Ω
< 2.5 kΩ
< 25 kΩ
< 250 kΩ
Resolution 1 mΩ
10 mΩ
100 mΩ
1 Ω
Selective Measurement of the Earthing Resistance (RE Clamp)
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
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)
1. With recommended current clamps/transformers.
Resistance Measurement (R~)
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
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
Resistance Measurement (R DC)
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
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
Compensation of Lead Resistance (RK)
Compensation of lead resistance (RK) can be switched on in functions RE 3-pole, RE 4-pole (clamp), R AC, and R DC 2-pole
Formation of measured value Rdisplay = Rmeasured - Rcompensated2
2. Value of setpoint entry RK = 0.000 Ω, variable from 0.000 to 29.99 Ω by means of measuring adjustment.
Stakeless Ground Loop Measurement (Two Clamp Stakeless)
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)
Measuring principle: Stakeless measurement of resistance in closed loops using two current transformers.
Automatic range selection.
The information regarding stakeless ground loop measurements is only valid when used in conjunction with the recommended current clamps at the minimum distance specified.

Fluke 1625-2 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Ground Testers/3 Pole / 4 Pole Ground Testers Template

Type What's This?3 Pole, 4 Pole
Display (3 Pole Testers) What's This?Digital
Ground Resistance Range What's This?299.9 K Ohms
Operating Frequency What's This?55 Hz
Accuracy3-pole and 4-pole Ground Resistance Measurement: ± (2 % rdg + 3 d)
Measuring Current50 mA 
Measuring Voltage What's This?48 V 
Measuring Frequency What's This?128 Hz
Soil Resistivity What's This?Yes
Display Counts2999 
Stakeless Capability What's This?Yes 
Power SupplyBattery
CAT Rating What's This?II
CAT Voltage What's This?300 V
Optional Ground Kit Included What's This?No
Auto Ranging What's This?Yes 

Test Equipment General Attributes

Unique Features• 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
• Professional 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-toearth
ground would see
• Adjustable limits - for
quicker testing
Warranty2 YEARS
Calibration IncludedFactory Calibration
Power Supply VoltageBattery Powered
Data Logging What's This?No
Interfaces I/O Other, USB 
IP Rating What's This?IP40, IP56 
Product Weight5.51 LBS
Battery TypeAA 
Product Height5.2 IN
Product Length12.6 IN
Product Width9.65 IN
Shipping Weight6.06 LBS
ECCN NumberEAR99
Country of OriginRomania
Shipping Height5.2 IN
Shipping Length12.6 IN
Shipping Width9.65 IN
UPC095969340694

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