Fluke 1623-2 Kit GEO Earth Ground Tester

 Fluke 1623-2 GEO Earth Ground Tester

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 disconnectedâ??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 systemâ?? a major time saver. You can also perform earth ground tests in places youâ??ve not considered before: inside buildings, power pylons, or anywhere you donâ??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.

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
• USB data storage and transfer

Specifications:

General
Display:1999 digit LCD	Display with special symbols, digit height 25 mm
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 ranges
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: 300V CAT II, 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 sec.
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 (WxHxD)	250 mm x 133 mm x 187 mm (9.75 in x 5.25 in x 7.35 in)
Weight	1.1 kg (2.43 lb) including batteries 7.6 kg (16.8 lb) including accessories and batteries in carrying case

RA 3-pole ground resistance measurement (IEC 1557-5)

Switch position	Resolution	Measuring range	Accuracy	Operating error
RA 3-pole	0.001 ? to 10 ?	0.020 ? to 19.99 k?	± (2 % rdg + 3 d)	± (5 % rdg + 3 d)

Measuring principle: Current and voltage measurement

Measuring voltage	Vm = 48 V ac
Short-circuit current	> 50 mA
Measure frequency	128 Hz
Probe resistance (RS)	Max 100 k?
Auxiliary earth electrode resistance (RH)	Max. 100 k?
Additional error from RH and RS	RH[k?]���RS[k?]/RA[?]���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	Resolution	Measuring range	Accuracy	Operating error
RA 4-pole	0.001 ? to 10 ?	0.020 ? to 19.99 k?	± (2 % rdg + 3 d)	± (5 % rdg + 3 d)

Measuring principle: Current/voltage measurement

Measuring voltage	Vm = 48 V ac
Short-circuit current	> 50 mA
Measuring frequency	128 Hz
Probe resistance (RS+ RES)	Max. 100 k?
Auxiliary earth electrode resistance (RH)	Max. 100 k?
Additional error from RH and RS	RH[k?]���RS[k?/RA[?]���0.2 %
Monitoring of RS, and RH with error indicator
Automatic range selection

RA 3-pole selective ground resistance measurement with current clamp (RA)

Switch position	Resolution	Measuring range	Accuracy	Operating error
RA 3-pole	0.001 ? to 10 ?	0.020 ? to 19.99 k?	± (7 % rdg + 3 d)	± (10 % rdg + 5 d)

Measuring principle: Current/voltage measurement (with external current clamp)

Measuring voltage	Vm = 48 V ac
Short-circuit current	> 50 mA
Measuring frequency	128 Hz
Probe resistance (RS)	Max. 100 k?
Auxiliary earth electrode resistance (RH)	Max. 100 k?
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)

Switch position	Resolution	Measuring range	Accuracy	Operating error
RA 4-pole	0.001 ? to 10 ?	0.020 ? to 19.99 k?	± (7 % rdg + 3 d)	± (10 % rdg + 5 d)

Measuring principle: Current/voltage measurement (with external current clamp)

Measuring voltage	Vm = 48 V ac
Short-circuit current	> 50 mA
Measuring frequency	128 Hz
Probe resistance (RS)	Max. 100 k?
Auxiliary earth electrode resistance (RH)	Max. 100 k?
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   

Switch position	Resolution	Measuring range	Accuracy	Operating error
RA 4-pole	0.001 ? to 0.1 ?	0.020 ? to 199.9 ?	± (7 % rdg + 3 d)	± (10 % rdg + 5 d)

Measuring principle: Stakeless measurement of resistance in closed loops using two current transformers

Measuring voltage	Vm = 48 V ac (primary)
Measuring frequency	128 Hz
Noise current (IEXT)	Max. IEXT = 10 A (ac) (RA < 20 ?) Max. IEXT = 2 A (ac) (RA > 20 ?)

For full Fluke 1623-2 specifications, please click here: Fluke 1623-2

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