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-RA 3-Pole Ground Resistance Measurement (IEC 1557-5):
Switch position: RA 3-pole
Resolution: 0.001 Ω to 10 Ω
Measuring range: 0.020 Ω to 19.99 kΩ
Accuracy: ±(2% rdg + 3 d)
Operating error:±(5% rdg + 3 d)
-RA 4-Pole Ground Resistance Measurement (IEC 1557-5):
Switch position:RA 4-pole
Resolution: 0.001 Ω to 10 Ω
Measuring range 0.020 Ω to 19.99 kΩ
Accuracy: ±(2% rdg + 3 d)
Operating error: ±(5% rdg + 3 d)
-RA 3-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp ):
Switch position: RA 3-pole with clamp
Resolution: 0.001 Ω to 10 Ω
Measuring range 0.020 Ω to 19.99 kΩ
Accuracy: ±(7% rdg + 3 d)
Operating error:±(10% rdg + 5 d)
-RA 4-Pole Selective Ground Resistance Measurement with Current Clamp (RA with Clamp ):
Switch position:RA 4-pole with clamp
Resolution:0.001 Ω to 10 Ω
Measuring range 0.020 Ω to 19.99 kΩ
Accuracy:±(7% rdg + 3 d)
Operating error:±(10% rdg + 5 d)
-Stakeless Ground Loop Measurement (2 Clamps);
Switch position:RA 4-pole 2 clamps
Resolution:0.001 Ω to 10 Ω
Measuring range:0.020 Ω to 19.99 kΩ
Accuracy:±(7% rdg + 3 d)
Operating error:±(10% rdg + 5 d)
Includes:
GEO Earth Ground Tester 1623-2
User’s Manual
Batteries
Quick Reference Guide
2 Test Leads
USB Cable
Option:
EI-1623: Selective/Stakeless Clamp Set for 1623
ES-162P3-2: EARTH GROUND STAKE SET FOR 3 POLE MEASUREMENT, FLUKE-1623-2/1625-2
ES-162P4-2:EARTH GROUND STAKE SET FOR 4 POLE MEASUREMENT, FLUKE-1623-2/1625-2
Datasheet
Manual
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:
Other useful capabilities:
| General Specifications | |
| Display: 1999 digit LCD | Display with special symbols, digit height 25 mm, fluorescent backlight |
| User interface | Instant measurement through TURN and START one button concept. The only operating elements are rotary switch and START button |
| Robust, water and dust resistant | Instrument is designed for tough environmental conditions (rubber protective cover, IP56) |
| Memory | Internal 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 error | Refers to the reference temperature range and is guaranteed for 1 year |
| Operating error | Refers to the operating temperature range and is guaranteed for 1 year |
| Climatic class | C1 (IEC 654-1), -5°C to +45°C (23° to +115° F), 5% to 95% RH |
| Protective type | IP56 for case, IP40 for battery door according to EN60529 |
| Safety | Protection by double and/or reinforced insulation. max. 50 V to earth. IEC61010-1: Pollution degree 2 |
| EMC (emission immunity) | IEC61326-1: Portable |
| Quality system | Developed, designed and manufactured according to DIN ISO 9001 |
| External voltage | V 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 time | Typical 6 seconds |
| Max. overload | 250 V rms (pertains to misuse) |
| Auxiliary power | 6 x 1.5 V Alkaline (type AA LR6) |
| Battery life span | Typical > 3,000 measurements |
| 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) 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 position | RA 3-pole |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 Ω to 19.99 kΩ |
| Accuracy | ±(2% rdg + 3 d) |
| Operating error | ±(5% rdg + 3 d) |
| Measuring Principle: Current/Voltage Measurement | |
| Measuring voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 Hz |
| Probe resistance (RS) | Max 100 kΩ |
| Auxiliary earth electrode resistance (RH) | Max 100 kΩ |
| Additional error from RH and RS | RH[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 position | RA 4-pole |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 Ω to 19.99 kΩ |
| Accuracy | ±(2% rdg + 3 d) |
| Operating error | ±(5% rdg + 3 d) |
| Measuring Principle: Current/Voltage Measurement | |
| Measuring voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 Hz |
| Probe resistance (RS + RES) | Max 100 kΩ |
| Auxiliary earth electrode resistance (RH) | Max 100 kΩ |
| Additional error from RH and RS | RH[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 position | RA 3-pole with clamp |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 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 voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 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 position | RA 4-pole with clamp |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 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 voltage | Vm = 48 V AC |
| Short-circuit current | > 50 mA |
| Measure frequency | 128 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 position | RA 4-pole 2 clamps |
| Resolution | 0.001 Ω to 10 Ω |
| Measuring range | 0.020 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 voltage | Vm = 48 V AC |
| Measure frequency | 128 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 | |
