Fluke 1623-2 GEO Earth Ground Resistance Meter

  • Fluke 1623-2 GEO Earth Ground Resistance Meter | Fluke
  • Fluke 1623-2 GEO Earth Ground Resistance Meter | Fluke
  • Fluke 1623-2 GEO Earth Ground Resistance Meter | Fluke

Key features

  • A unique earth ground tester that performs fast, accurate 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 IP56 rating for outdoor use
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Get a free demo

Product overview

Fluke 1623-2 Earth Ground Tester performs all four ground tests quickly and accurately.

The Fluke 1623-2 earth ground tester measures earth ground loop resistances using only clamps, only stakes, or one clamp and stakes. With the stakeless test method, the Fluke 1623-2 is able to measure earth ground loop resistances for multi-grounded systems using only current clamps. This technique eliminates the dangerous, and time consuming job of disconnecting parallel grounds, and finding suitable locations for auxiliary ground stakes. You can use it to perform earth ground tests in places you’ve not considered before, such as inside buildings, on power pylons, or anywhere you don’t have access to soil.

Keep your options open

Keep in mind, the stakeless test method works only if a bonded earth ground system exists for the building or structure under test. If there is only one path to ground, typical with many residential applications, you will need to use the fall-of-potential test method that requires stakes.

The 1625-2 is also very easy to use. World class accessories speed set up and test time. And the tester tells you which stakes or clamps to connect for each test. The large rotary switch and buttons are easy to operate even with a gloved hand. And you can store up to 1,500 records and access them easily via the USB port.

Need even more accuracy? Check out the 1625-2 that offers:

  • Automatic Frequency Control that identifies existing interference and chooses a measurement frequency to minimize its effect, thus providing a more accurate earth ground value.
  • R* measurement that calculates earth ground impedance at 55 Hz to more accurately reflect the earth ground resistance that a fault-to earth ground would see.

Other useful capabilities:

  • Includes USB port for data storage and transfer
  • Works with world class that speed set up and test time
  • Comes with a rugged carrying case

Models

Fluke 1623-2
Fluke 1623-2 GEO Earth Ground Tester

Includes:

  • GEO Earth Ground Tester
  • User's Manual
  • Batteries
  • Quick Reference Guide
  • 2 Test Leads
  • USB Cable

Specifications

General Specifications
Display: 1999 digit LCDDisplay with special symbols, digit height 25 mm, fluorescent backlight
User interfaceInstant measurement through TURN and START one button concept. The only operating elements are rotary switch and START button
Robust, water and dust resistantInstrument is designed for tough environmental conditions (rubber protective cover, IP56)
MemoryInternal memory storage up to 1500 records accessible via USB port
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
Intrinsic errorRefers to the reference temperature range and is guaranteed for 1 year
Operating errorRefers to the operating temperature range and is guaranteed for 1 year
Climatic classC1 (IEC 654-1), -5°C to +45°C (23° to +115° F), 5% to 95% RH
Protective typeIP56 for case, IP40 for battery door according to EN60529
SafetyProtection by double and/or reinforced insulation. max. 50 V to earth. IEC61010-1: 300V CAT II, Pollution degree 2
EMC (emission immunity)IEC61326-1: Portable
Quality systemDeveloped, designed and manufactured according to DIN ISO 9001
External voltageV ext, max = 24 V (DC, AC < 400 Hz), measurement inhibited for higher values
V ext rejection> 120 dB (162⁄3, 50, 60, 400 Hz)
Measuring timeTypical 6 seconds
Max. overload250 V rms (pertains to misuse)
Auxiliary power6 x 1.5 V Alkaline (type AA LR6)
Battery life spanTypical > 3,000 measurements
Dimensions (W x H x D)250 x 133 x 187 mm (9.75 x 5.25 x 7.35 in)
Weight1.1 kg (2.43 lb) including batteries
7.6 kg (16.8 lb) incl. accessories and batteries in carrying case
RA 3-Pole Ground Resistance Measurement (IEC 1557-5)
Switch positionRA 3-pole
Resolution0.001 Ω to 10 Ω
Measuring range0.020 Ω to 19.99 kΩ
Accuracy±(2% rdg + 3 d)
Operating error±(5% rdg + 3 d)
Measuring Principle: Current/Voltage Measurement
Measuring voltageVm = 48 V AC
Short-circuit current> 50 mA
Measure frequency128 Hz
Probe resistance (RS)Max 100 kΩ
Auxiliary earth electrode resistance (RH)Max 100 kΩ
Additional error from RH and RSRH[kΩ]•••RS[kΩ]/RA[Ω]•••0.2%
Monitoring of RS and RH with error indicator.
Automatic range selection.
Measurement is not performed if the current through the current clamp is too low.
RA 4-Pole Ground Resistance Measurement (IEC 1557-5)
Switch positionRA 4-pole
Resolution0.001 Ω to 10 Ω
Measuring range0.020 Ω to 19.99 kΩ
Accuracy±(2% rdg + 3 d)
Operating error±(5% rdg + 3 d)
Measuring Principle: Current/Voltage Measurement
Measuring voltageVm = 48 V AC
Short-circuit current> 50 mA
Measure frequency128 Hz
Probe resistance (RS + RES)Max 100 kΩ
Auxiliary earth electrode resistance (RH)Max 100 kΩ
Additional error from RH and RSRH[kΩ]•••RS[kΩ]/RA[Ω]•••0.2%
Monitoring of RS and RH with error indicator.
Automatic range selection.
RA 3-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp )
Switch positionRA 3-pole with clamp
Resolution0.001 Ω to 10 Ω
Measuring range0.020 Ω to 19.99 kΩ
Accuracy±(7% rdg + 3 d)
Operating error±(10% rdg + 5 d)
Measuring Principle: Current/Voltage Measurement (with External Current Clamp)
Measuring voltageVm = 48 V AC
Short-circuit current> 50 mA
Measure frequency128 Hz
Probe resistance (RS)Max 100 kΩ
Auxiliary earth electrode resistance (RH)Max 100 kΩ
Monitoring of RS and RH with error indicator.
Automatic range selection.
Measurement is not performed if the current through the current clamp is too low.
RA 4-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp )
Switch positionRA 4-pole with clamp
Resolution0.001 Ω to 10 Ω
Measuring range0.020 Ω to 19.99 kΩ
Accuracy±(7% rdg + 3 d)
Operating error±(10% rdg + 5 d)
Measuring Principle: Current/Voltage Measurement (with External Current Clamp)
Measuring voltageVm = 48 V AC
Short-circuit current> 50 mA
Measure frequency128 Hz
Probe resistance (RS)Max 100 kΩ
Auxiliary earth electrode resistance (RH)Max 100 kΩ
Monitoring of RS and RH with error indicator.
Automatic range selection.
Measurement is not performed if the current through the current clamp is too low.
Stakeless Ground Loop Measurement (2 Clamps)
Switch positionRA 4-pole 2 clamps
Resolution0.001 Ω to 10 Ω
Measuring range0.020 Ω to 19.99 kΩ
Accuracy±(7% rdg + 3 d)
Operating error±(10% rdg + 5 d)
Measuring Principle: Stakeless Measurement of Resistance in Closed Loops Using Two Current Transformers
Measuring voltageVm = 48 V AC
Measure frequency128 Hz
Noise current (IEXT)Max. IEXT = 10 A (AC) (RA < 20 Ω)
Max. IEXT = 2 A (AC) (RA > 20 Ω)
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.

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