Fluke 1625 ADVANCED GEO EARTH GROUND TESTER

The Fluke 1623 and 1625 are distinctive earth ground testers that can perform all four types of earth ground measurement. Specifically, the Fluke 1623 and 1625 testers are able to measure earth ground loop resistances using only clamps – called Stakeless testing. This method doesn’ t require the use of earth ground stakes or the disconnection of ground rods.

Testing Methods

3- and 4-Pole Fall of Potential – standard earth ground testing using two ground stakes
Selective testing – without disconnecting ground rods, a technician can measure ground resistance using a combination of stakes and a clamp.
Stakeless testing – innovative solution using only clamps, instead of ground stakes, to measure earth ground loop resistance.

The Fluke 1625 offers these advanced features

Automatic Frequency Control ( AFC) – identifies existing interference and chooses a measurement frequency to minimize its effect, providing a 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 quick test result verification.

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

Fluke 1625 Vm = 20/ 48 V ac
Short circuit current

Fluke 1625 250 mA ac
Measure frequency

Fluke 1625 94, 105, 111, 128Hz
Resolution

Fluke 1625 0.001 & to 100 &
Measuring range

Fluke 1625 0.001 & to 299.9 k&
Intrinsic error

Fluke 1625 ± ( 2 % of reading + 2 d)
Operating error

Fluke 1625 ± ( 5 % of reading + 5 d)

RA 4-pole ground resistance measurement ( IEC 1557-5)
Measuring Voltage

Fluke 1625 Vm = 20/ 48 V ac
Short circuit current

Fluke 1625 250 mA ac
Measure frequency

Fluke 1625 94, 105, 111, 128Hz
Resolution

Fluke 1625 0.001 & to 100 &
Measuring range

Fluke 1625 0.001 & to 299.9 k&
Intrinsic error

Fluke 1625 ± ( 2 % of reading + 2 d)
Operating error

Fluke 1625 ± ( 5 % of reading + 5 d)

RA 3-pole ground resistance measurement with current clamp
Measuring Voltage

Fluke 1625 Vm = 20/ 48 V ac
Short circuit current

Fluke 1625 250 mA ac
Measure frequency

Fluke 1625 94, 105, 111, 128Hz
Resolution

Fluke 1625 0.001 & to 10 &
Measuring range

Fluke 1625 0.001 & to 29.99 k&
Intrinsic error

Fluke 1625 ± ( 7 % of reading + 2 d)
Operating error

Fluke 1625 ± ( 10 % of reading + 5 d)

RA 4-pole selective ground resistance measurement with current clamp
Measuring Voltage

Fluke 1625 Vm = 20/ 48 V ac
Short circuit current

Fluke 1625 250 mA ac
Measure frequency

Fluke 1625 94, 105, 111, 128Hz
Resolution

Fluke 1625 0.001 & to 10 &
Measuring range

Fluke 1625 0.001 & to 29.99 k&
Intrinsic error

Fluke 1625 ± ( 7 % of reading + 2 d)
Operating error

Fluke 1625 ± ( 10 % of reading + 5 d)

Stakeless ground loop measurement
Measuring Voltage

Fluke 1625 Vm = 20/ 48 V ac
Measure frequency

Fluke 1625 94, 105, 111, 128Hz
Noise current ( Iext)

Max. Iext = 2 A ( ac) ( RA < 20 & )
Fluke 1625 Max. Iext = 3 A
Resolution

Fluke 1625 0.001 & to 10 &
Measuring range

Fluke 1625 0.001 & to 29.99 k&
Intrinsic error

Fluke 1625 ± ( 7 % of reading + 2 d)
Operating error

Fluke 1625 ± ( 10 % of reading + 5 d)

Environmental Specifications
Working temperature
-10 ° C to + 50 ° C
Operating Temperature
0 ° C to + 35 ° C
Nominal temperature
+ 18 ° C to + 28 ° C
Storage Temperature

Fluke 1625 -30 ° C to + 60 ° C
Climatic class
C1 ( IEC 654-1) , -5 ° C to + 45 ° C, 5 % to 95 % RH
Protection type
IP56 for case, IP40 for battery door according to EN 60529

Safety Specifications
Safety Rating
CAT II, 300 V