FLUKE 1625-2 ADVANCED GEO EARTH GROUND TESTER 2571664 W\ AUTO FREQUENCY CONTROL

Description

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FLUKE 1625-2 ADVANCED GEO EARTH GROUND TESTER 2571664 W\ AUTOMATIC FREQUENCY CONTROL
MSRP:
379
Item Details:
Manufacturer:
FLUKE
Description from Manufacturer:
Product overview: Fluke 1625-2 GEO Earth Ground Tester
Fluke 1625-2 Earth Ground Tester offers fast, accurate earth ground testing using all four test methods.
The Fluke 1625-2 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 1625-2 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. This allows you 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
If a bonded earth ground system does not exist for the building or structure under test, and there is only one path to ground, you can use the 1625-2 to perform the fall-of-potential test method with stakes.
The 1625-2 offers other advanced features including:
Automatic Frequency Control to identify existing interference and choose 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.
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 1500 records and access them easily via the USB port.
Other useful capabilities:
Provides 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
Includes USB port for data storage and transfer
Features IP56 rating for outdoor use
Offers adjustable limits for quicker testing
Comes with a rugged carrying case
Key features
A unique earth ground tester that performs 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 Automatic Frequency Control (AFC) to minimize the effect of interference
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
Urms = 0 V
Sockets E, ES, S or H to each other in any combination, max. Urms = 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 (RE+RH ≤ 1 kΩ)
With IEC LR6/type AA: typ. 6,000 measurements (RE + RH > 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 (UST)
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
Urms = 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
Urms = 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 RA 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
En = 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
RH(RS + 2000 Ω)/RE x 1.25 x 10-6% + 5 digits
Measuring error of RH and RS
Typ. 10% of RE + RS + RH
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 RH
RH with Umeas = 48 V
< 300 Ω
< 6 Ω
< 60 Ω
< 600 Ω
RH with Umeas = 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 (RE 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. Urms = 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
RH(RS + 2000 Ω)/RETOTAL x 1.25 x 10-6% + 5 digits
Measuring error of RH and RS
Typ. of 10% of RETOTAL + RS + RH
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
Urms 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
Urms = 250 V
Compensation of Lead Resistance (RK)
Compensation of lead resistance (RK) can be switched on in functions RE 3-pole, RE 4-pole (clamp), R AC, and R DC 2-pole
Formation of measured value
Rdisplay = Rmeasured - Rcompensated2
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.
Includes:
GEO Earth Ground Tester
User's Manual
Batteries
Quick Reference Guide
USB Cable
Condition:
NEW
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