Description

The Fluke 1625-2 KIT Advanced Geo Earth Ground Tester sets the standard for professional earth resistance measurement, delivering reliable performance for electrical engineers, field technicians, and maintenance teams who need to verify grounding system integrity. This comprehensive kit addresses the critical challenge of measuring earth resistance in environments where traditional methods fall short, combining advanced technology with Fluke’s renowned durability to ensure accurate readings across diverse installation conditions.

Fluke 1625-2 KIT Key Features

This versatile earth ground tester features multiple measurement methods including 3-pole, 4-pole, and clamp-on current transformer techniques, allowing users to select the most appropriate method for their specific site conditions. The internal memory stores up to 1500 resistance readings, accessible via USB port for data analysis and reporting. A clear 4-digit 7-segment LCD display ensures easy reading of measurements, while the IP56 rated case provides protection against dust and water ingress typical of field operations. The kit includes all necessary accessories for immediate deployment, making it an essential tool for grounding system verification.

Interference voltage and frequency measurement capability
3-pole and 4-pole earth resistance measurement methods
Clamp-on current transformer option for reduced test lead requirements
2-pole resistance measurement with AC and DC functionality
Internal memory storage of 1500 records via USB
4-digit 7-segment LCD display for clear readouts
IP56 rated case for field durability
Operating temperature range -10°C to 50°C

Who Needs the Fluke 1625-2 KIT?

Electrical engineers and maintenance technicians responsible for grounding system commissioning and periodic testing will find the Fluke 1625-2 KIT indispensable for ensuring worker safety and code compliance. Power distribution facility managers rely on this kit to verify that grounding grids meet operational requirements and protect equipment from fault currents. Contractors and field service teams appreciate the kit’s versatility in handling various site conditions where standard 2-pole measurements are impractical or impossible due to limited access or soil conditions.

The Fluke 1625-2 KIT serves buyers ranging from large industrial facilities requiring regular grounding verification to smaller commercial operations needing occasional system checks. Utility companies use the kit for substation maintenance and new installation validation, while consulting engineers specify it for project specifications and compliance documentation. Any professional tasked with measuring earth resistance in challenging environments will benefit from the kit’s multi-method approach and reliable performance.

Fluke 1625-2 KIT Applications

New substation grounding grid testing ensures proper fault current path establishment before system energization, preventing equipment damage and ensuring personnel safety during fault conditions. Existing facility grounding system verification during routine maintenance identifies degradation, corrosion, or connection loosening that can compromise system effectiveness over time. The kit’s clamp-on method proves invaluable in space-constrained environments where driving test electrodes is impractical, such as inside buildings or paved areas.

Telecommunications tower grounding verification protects sensitive equipment from lightning strikes and power surges, while industrial plant grounding system testing ensures proper operation of protective relays and prevents nuisance tripping. The interference voltage measurement function helps identify stray currents that can affect sensitive electronic equipment, making this kit suitable for data centers, hospitals, and other facilities where power quality matters.

Why Buy Fluke 1625-2 KIT from Mohammad Mahdi Electronics?

Mohammad Mahdi Electronics ensures authentic Fluke products with manufacturer warranty coverage and genuine factory support for all testing equipment. Our team provides expert guidance to help you select the right earth ground tester for your specific application requirements and site conditions. We offer competitive pricing on Fluke 1625-2 KIT kits with fast shipping across the UAE and comprehensive after-sales support for calibration and maintenance services.

Choose Mohammad Mahdi Electronics for your Fluke 1625-2 KIT purchase and receive authentic products, knowledgeable service, and the reliability that comes from working with an MME who understands your testing needs.

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

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

U rms = 0 V

Sockets E, ES, S or H to each other in any combination, max. U rms = 250 V (pertains to misuse)

Safety: Protection by double and/or reinforced insulation. Max. 50 V to earth per IEC61010-1. 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 (R E +R H ≤ 1 kΩ)

With IEC LR6/type AA: typ. 6,000 measurements (R E + R H > 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 (U ST )

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: U rms = 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 R 1

Noise rejection: 120 dB (16 2/3 , 50

CT clamp-on current transformer: Model dependent, consult manual for compatibility

Accessories included: Carrying case, test leads, auxiliary electrodes, and user manual

Warranty: Standard Fluke international warranty through Mohammad Mahdi Electronics

CTA: Contact Mohammad Mahdi Electronics for technical specifications and pricing</

Stock up your testing lab with the Fluke 1625-2 KIT Advanced Geo Earth Ground Tester from Mohammad Mahdi Electronics. Our team is ready to assist you with product selection, warranty registration, and technical support for all your earth resistance testing needs. Contact our knowledgeable staff today to discuss how this versatile ground tester can meet your specific application requirements.

Fluke 1625-2 KIT 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
	U_rms = 0 V
	Sockets E, ES, S or H to each other in any combination, max. U_rms = 250 V (pertains to misuse)
Safety	Protection by double and/or reinforced insulation. Max. 50 V to earth per IEC61010-1. 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 (R_E+R_H ≤ 1 kΩ)
	With IEC LR6/type AA: typ. 6,000 measurements (R_E + R_H > 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 (U_ST)
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	U_rms = 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	U_rms = 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 R_A 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 E_n = 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	R_H(R_S + 2000 Ω)/R_E x 1.25 x 10^-6% + 5 digits
Measuring error of R_H and R_S	Typ. 10% of R_E + R_S + R_H
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 R_H
RH with U_meas = 48 V	< 300 Ω
	< 6 Ω
	< 60 Ω
	< 600 Ω
RH with U_meas = 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 (R_E 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. U_rms = 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	R_H(R_S + 2000 Ω)/R_ETOTAL x 1.25 x 10^-6% + 5 digits
Measuring error of R_H and R_S	Typ. of 10% of R_ETOTAL + R_S + R_H
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	U_rms 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	U_rms = 250 V
Compensation of Lead Resistance (R_K)
Compensation of lead resistance (R_K) can be switched on in functions R_E 3-pole, R_E 4-pole (clamp), R AC, and R DC 2-pole
Formation of measured value	R_display = R_measured – R_compensated²
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.