雷竞技appFluke 1625-2 grounding resistance tester

The main features

No test of pile

雷竞技appFluke 1625-2 by simply using grounding resistance tester jaw measuring grounding resistance.When using this method of measurement, the two jaw clip on grounding rods, each jaw is connected to the tester.Completely without using grounding pile.One of the fixed voltage clamp taste should be known, another jaw measuring current.Then, the tester will automatically determine the resistance of the ground rod.This test method is only applicable to participants in the buildings or structures with the situation of the grounding system, but in most cases.If the earth is only a path, such as many residential applications, used by the no pile test method cannot provide acceptable values, you must use the potential drop test method.

Adopting pile test, without having to disconnect grounding rods - keep the combination of system on the integrity of the test.Now no need to spend time for the system and the connection of grounding rods placed on pile, it can save a lot of time.Before something you never thought about location, you can also perform ground testing, including building, cable tower, or anything you unable to gain access to the location of the land.

Fully functional tester

雷竞技appFluke 1625-2 is a distinctive grounding tester, can complete all four types of grounding measurements:

Three pole and quadrupole potential drop pile (to use)
Quadrupole soil resistivity test pile (to use)
Selective test (using the pile and a jaw)
No pile test (using only two jaw)

Manual + resource

Produc雷竞技appts overview: Fluke 1625-2 grounding resistance tester

Suggestions to the fluke official flagship store of purchase
雷竞技appFluke 1625-2 grounding resistance tester can through the USB port storage and download the data.First-class accessories can help to simplify and speed up the test of time.

Three pole and quadrupole potential drop ground resistance circuit test
Quadrupole soil resistivity test
Using a jaw for selective grounding rods testing
Using two jaw of pile ground rod test
IP56 protection grade meet the outdoor use
Hard carry case
USB data storage and transmission

Moreover, the tester is easy to use.Each test, the tester will prompt you to use for to pile or jaw;Large size rotary switch to make sure that you even wearing gloves can operate.

Produc雷竞技appt specifications: Fluke 1625-2 grounding resistance tester

General technical indicators
memory	Through the USB port access to the internal storage can be up to 1500 records
Measurement functions	Disturbance voltage and frequency, including/excluding clamp type current transformer of three pole and quadrupole grounding resistance, diode ac resistance, diode and quadrupole dc resistance
display	4 digital (digital) 2999-7 segment LCD display (visibility)
operation	The central rotary switch and function keys
Temperature range
Working temperature	- 10 ° C to 50 ° C (14 ° F to 122 ° F)
Storage temperature	30 ° to 60 ° C - C (22 ° F to 140 ° F) -
The temperature coefficient of	Plus or minus 0.1% of reading / ° C < 18 ° C > 28 ° C
Protection type	According to the EN60529, shell protection grade is IP56;Battery cover protection grade for IP40
Maximum voltage	Warning - port "jaw to interface, ES, S E and H
	U_{The RMS}= 0 V
	Jack, ES, S E and H any combination between each other, the largest U_{The RMS}= 250 V (belong to misuse)
security	Adopt dual and/or reinforced insulation protection.Of the largest 50 V (according to IEC61010-1).Pollution level 2
Quality standard	According to DIN ISO 9001 standard development, design and production
Field effect	Conform to DIN 43780 (8/76)
Auxiliary power	6 x 1.5 V alkaline battery (IEC type LR6 or AA)
Battery life span	Using IEC/LR6 AA type: usually for measuring 3000 times (R_E+ R_H.1 k or less Ω)
	Using IEC/LR6 AA type: usually for measuring 6000 times (R_E+ R_H.> 10 k Ω)
Size (width x height x deep)	250 x 133 x 187 mm (9.75 x 5.25 x 7.35 in)
The weight of the	1.1 kg (2.43 lb) or less (not including accessories);7.6 kg (16.8 lb) (carrying box contains attachments and battery)
The shell material	polyester
The interfering voltage dc + ac measurement (U_ST)
Measurement error limit: method	Full-wave rectifier
Measuring range	1 V and 50 V
Display range	0.0 V and 50 V
The resolution of the	0.1 V
Frequency range	45 Hz - 400 Hz ac/dc sine wave
precision	Plus or minus (reading of 5% + 5 digits)
Measuring sequence	About 4 times per second
Internal resistance	About 1.5 M Ω
Maximum overload	U_{The RMS}= 250 V
Interference measuring frequency (F)
Measurement error limit: method	Measure the interference voltage oscillation period
Measuring range	6.0 Hz - 400 Hz
Display range	16.0 Hz to 299.9 Hz - 999 Hz
The resolution of the	0.1 Hz to 1 Hz
range	1 V and 50 V
precision	Plus or minus (reading 1% + 2 digits)
Grounding resistance (RE)
Method of measurement	According to the IEC61557-5 standard probe was used to measure current and voltage
The open circuit voltage	20/48 V, communication
Short circuit current	250 mA (ac)
Measure the frequency	Manually or automatically select 94, 105, 111 and 128 Hz (AFC), in the function R creates for 55 Hz
Noise suppression	120 dB (16 two-thirds, 50, 60 and 400 Hz)
For maximum overload	U_{The RMS}= 250 V
Electrical measurement specifications
Inherent error or influence	Reference conditions or specified scope of work	Symbolic code	In accordance with the relevant IEC1557 standard part requirements or test	Test type
Inherent error	Reference conditions	a.	Part 5 of section 6.1	R
location	Reference position + 90 °	E1	Part 1, section 4.2	R
The power supply voltage	Limit value is stipulated in the manufacturer	E2	Part 1, section 4.2 and 4.3	R
The temperature	0 ° C and 35 ° C	E3	Part 1, section 4.2	T
Serial interference voltage	Refer to section 4.2 and 4.3	E4	Part 5 sections 4.2 and 4.3	T
The resistance of the probe and auxiliary grounding electrode	0 to 100 x R_a.But the 50 k or less Ω	E5	Part 5 of section 4.3	T
The system frequency	Between 99% and 101% of the nominal frequency	E7	Part 5 of section 4.3	T
System voltage	Between 85% and 110% of the nominal voltage	E8	Part 5 of section 4.3	T
The operating error	B = + (\| \| + 1 E squared (9) A₁E squared₂E squared₃E squared₄E squared₅E squared₆)		Part 5 of section 4.3	R
	Basic value [%] = B + B/x 100% A = inherent error E_n= deviation R = routine test T = type test
Measuring range	0.020 Ω Ω to 300 k
Display range	0.001 Ω to Ω 2.999
	3.00 Ω to Ω 29.99
	30.0 Ω to Ω 299.9
	Ω Ω 0.300 k to 2.999 k
	Ω Ω 3.00 k to 29.99 k
	Ω Ω 30.0 k to 299.9 k
The resolution of the	0.001 Ω
	0.01 Ω
	0.1 Ω
	1 Ω
	10 Ω
	100 Ω
precision	Plus or minus (reading 2% + 2 digits)
The operating error	Plus or minus (reading of 5% + 5 digits)
Measuring time	Fixed frequency usually use automatic frequency control for 8 seconds, when the maximum 30 seconds, to complete all measuring frequency cycle
Due to the resistance of the probe and auxiliary grounding electrode additional error	R_H.(R_s.+ 2000 Ω)/R_E1.25 x 10 x^{- 6}% + 5 digits
R_H.And R_s.Measurement error	Usually a R when the fixed frequency_E+ R_s.+ R_H.10% of the
The largest probe resistance	1 M or less Ω
The biggest auxiliary grounding electrode resistance	1 M or less Ω
If error in IEC61557-5 requirements limit scope, will automatically check. If because of the influence of the certain conditions, results in measuring probe, auxiliary grounding electrode and the grounding resistance measurement error more than 30%, after the screen will show the warning symbol and prompt the RS or RH is too high.
Measuring resolution of the automatic conversion depends on the auxiliary grounding electrode resistance R_H.
U_measThe RH = 48 V	< 300 Ω
	The < 6 Ω
	The < 60 Ω
	< 600 Ω
U_measThe RH = 20 V	< 250 Ω
	< 2.5 k Ω
	< 25 k Ω
	< 250 k Ω
The resolution of the	1 m Ω
	10 m Ω
	100 m Ω
	1 Ω
Selective grounding resistance measurement (R_EJaw)
Method of measurement	According to the EN61557-5 standard probe was used to measure current and voltage, and an additional measure the single branch of the current transformer.
The open circuit voltage	20/48 V, communication
Short circuit current	250 mA (ac)
Measure the frequency	Manually or automatically select 94, 105, 111 and 128 Hz (AFC), 55 Hz creates (R)
Noise suppression	120 dB (162/3, 50, 60, and 400 Hz)
For maximum overload	Of the largest U_{The RMS}= 250 V (will not start the measurement)
Measuring range	0.020 Ω Ω to 300 k
Display range	0.001 Ω to Ω 2.999
	3.00 Ω to Ω 29.99
	30.0 Ω to Ω 299.9
	Ω Ω 0.300 k to 2.999 k
	Ω Ω 3.00 k to 29.99 k
The resolution of the	0.001 Ω
	0.01 Ω
	0.1 Ω
	1 Ω
	10 Ω
precision	Plus or minus (reading 7% + 2 digits)
The operating error	Plus or minus (reading of 10% + 5 digits)
Due to probe and auxiliary grounding electrode resistance typical additional error	R_H.(R_s.+ 2000 Ω)/R_ETOTAL1.25 x 10 x^{- 6}% + 5 digits
R_H.And R_s.Measurement error	Usually a R when the fixed frequency_ETOTAL+ R_s.+ R_H.10% of the
Measuring time	Fixed frequency usually use automatic frequency control for 8 seconds, when the maximum 30 seconds, to complete all measuring frequency cycle.
The minimum current to a single branch	0.5 mA	Use the transformer (1000:1)
	0.1 mA	Use the transformer (200:1)
The maximum interference electric current through the transformer	3 A	Use the transformer (1000:1)
1. Use the recommended current clamp/transformer.
Resistance measurements (R ~)
Method of measurement	Measuring current and voltage
Measure the voltage	20 V ac voltage, rectangular pulse
Short circuit current	> 250 mA (ac)
Measure the frequency	Manually or automatically select 94, 105, 111 and 128 Hz (AFC)
Measuring range	0.020 Ω Ω to 300 k
Display range	0.001 Ω to Ω 2.999
	3.00 Ω to Ω 29.99
	30.0 Ω to Ω 299.9
	300 Ω Ω to 2999
	Ω Ω 3.00 k to 29.99 k
	Ω Ω 30.0 k to 299.9 k
The resolution of the	0.001 Ω
	0.01 Ω
	0.1 Ω
	1 Ω
	10 Ω
	100 Ω
precision	Plus or minus (reading 2% + 2 digits)
The operating error	Plus or minus (reading of 5% + 5 digits)
Measuring time	Usually for 6 seconds
The largest disturbance voltage	24 V, more than 24 V measurement could not be started
Maximum overload	U_{The RMS}The maximum = 250 V
Dc resistance measurement (R)
Method of measurement	Can be carried out in accordance with the IEC61557-4 i-v measurement
Measure the voltage	Dc 20 V
Short circuit current	250 mA DC
Measured value formula	For quadrupole measurement, can prolong the H, S, ES wires without additional error. Conductor resistance of E > 1 Ω, can lead to 5 m Ω/Ω additional error.
Measuring range	0.020 Ω Ω to 300 k
Display range	0.001 Ω to Ω 2.999
	3.00 Ω to Ω 29.99
	30.0 Ω to Ω 299.9
	300 Ω Ω to 2999
	Ω Ω 3.0 k to 29.99 k
	Ω Ω 30.0 k to 299.9 k
The resolution of the	0.001 Ω
	0.01 Ω
	0.1 Ω
	1 Ω
	10 Ω
	100 Ω
precision	Plus or minus (reading 2% + 2 digits)
The operating error	Plus or minus (reading of 5% + 5 digits)
Measuring sequence	About 2 times per second
Measuring time	Usually for 4 seconds, including the polarity reversal (diode or quadrupole)
The largest disturbance voltage	Dc or ac voltage 3 V, or less than 3 V measurement could not be started
The largest induction rate	2 Henry
Maximum overload	U_{The RMS}= 250 V
Measuring wire resistance compensation (R_K.)
In the function R_EThree pole, R_EQuadrupole (jaw), R and R dc diode, can open measuring wire resistance compensation (R_K.)
Measured value formula	R_{According to}= R_measurement- R_{The compensation}squared
2. The set-point input value fairly RK = 0.000 Ω, by adjusting the measurement within the scope of 0.000 to 29.99 Ω changes.
No pile ground loop measuring (double jaw, no pile)
Switch gear	RA quadrupole (double jaw, no pile)
The resolution of the	0.001 Ω to Ω 0.1
Measuring range	0.02 Ω to Ω 199.9
precision	Plus or minus (reading of 7% + 3 digits)
The operating error	Plus or minus (reading of 10% + 5 digits)
Measure the voltage	The Vm = 48 V ac (primary voltage)
Measure the frequency	128 Hz
Noise current (IEXT)	Biggest IEXT = 10 A (communication) (RA < 20 Ω)
	Of the largest IEXT = 2 A (communication) (RA > 20 Ω)
Measuring principle, using two current transformer no piles of closed loop resistance measurement. Automatic range selection. Only when to use the recommended for the specified minimum distance measure current clamp, information about no pile ground loop measurement is valid.