Fluke 1623 Bedienungsanleitung

2 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

General

Display:1999 digit LCD Display with special symbols, digit height 25 mm, fluorescent backlight

User interface Instant measurement through TURN and START one button concept. The only operating elements are

rotary switch and START button

Robust and waterproof Instrument is designed for tough environmental conditions (rubber protective cover, IP56)

Temperature ranges

Working temperature -10 °C to 50 °C (14 °F to 22 °F)

Operating temperature 0 °C to 35 °C (32 °F to 95 °F)

Storage temperature -20 °C to 60 °C (-4 °F to 140 °F)

Reference temperature 23 °C to ± 2 °C (73 °F to ± 4 °F)

The chart of four temperature ranges for the instrument exist to satisfy European Standards requirements; the instrument can be used over the full working

temperature range by using the temperature coefficient to calculate accuracy at the ambient temperature of use.

Temperature coefficient ± 0.1 % of reading/K

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

EMC (Emission Immunity) IEC 61326-1:1997 Class A

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 mignon cells alkali-manganese (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

1623 Specifications

The most complete testers

The Fluke 1623 and 1625 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.

The complete model kit comes with the 1623

or 1625 tester, test leads, 4 earth ground stakes,

3 cable reels with wire, 2 clamps, batteries, and

manual—all inside a rugged Fluke carrying case.

3 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

RA3-pole ground resistance measurement (IEC 1557-5)

Switch position Resolution Measuring range Intrinsic error Operating error

RA3-pole 0.001 7to 10 70.001 7to 19.99 k7± (2 % rdg + 3 d) ± (5 % rdg + 3 d)

For 2-pole measurements connect terminals H and S with the supplied connector cable.

Measuring principle: Current and voltage measurement

Measuring voltage Vm = 48 V ac

Short-circuit current > 50 mA

Measure frequency 128 Hz (125 Hz on request)

Probe resistance (RS)Max 100 k7

Auxiliary earth electrode resistance (RH)Max. 100 k7

Additional error from RHand RSRH[k7]•••RS[k7]/RA[7]•••0.2 %

Monitoring of RSand RHwith error indicator

Automatic range selection

Measurement is not performed if the current through the current clamp is too low

RA4-pole ground resistance measurement (IEC 1557-5)

Switch position Resolution Measuring range Intrinsic error Operating error

RA4-pole 0.001 7to 10 70.001 7to 19.99 k7± (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 (125 Hz on request)

Probe resistance (RS+ RES)Max. 100 k7

Auxiliary earth electrode resistance (RH)Max. 100 k7

Additional error from RHand RSRH[k7]•••RS[k7/RA[7]•••0.2 %

Monitoring of RS, and RHwith error indicator

Automatic range selection

RA3-pole selective ground resistance measurement with current clamp (RA )

Switch position Resolution Measuring range Intrinsic error Operating error

RA3-pole 0.001 7to 10 70.001 7to 19.99 k7± (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 (125 Hz on request)

Probe resistance (RS)Max. 100 k7

Auxiliary earth electrode resistance (RH)Max. 100 k7

Monitoring of RS, and RHwith error indicator

Automatic range selection

Measurement is not performed if the current through the current clamp is too low

4 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

RA4-pole selective ground resistance measurement with current clamp (RA )

Switch position Resolution Measuring range Intrinsic error Operating error

RA4-pole 0.001 7to 10 70.001 7to 19.99 k7± (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 (125 Hz on request)

Probe resistance (RS)Max. 100 k7

Auxiliary earth electrode resistance (RH)Max. 100 k7

Monitoring of RS, and RHwith 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 Intrinsic error Operating error

RA4-pole 0.001 7to 0.1 70.001 7to 199.9 7± (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 (125 Hz on request)

Noise current (IEXT)Max. IEXT = 10 A (ac) (RA< 20 7)

Max. IEXT = 2 A (ac) (RA> 20 7)

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.

5 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

General

Description Microprocessor controlled, fully automated earth measuring instrument with additional functions

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, digit size 18 mm (0.71 in) with supplementary signs and

active illumination

Operation Central rotary switch and function keys

1625 Specifications

Temperature ranges

Working temperature range -10 °C to 50 °C (14° F to 122° F)

Operating temperature range 0 °C to 35 °C (32° F to 95° F)

Nominal temperature range 18 °C to 28 °C (64° F to 82° F)

Storage temperature range -30 °C to 60 °C (-22° F to 140° F)

Note: The chart of four temperature ranges for the instrument exist to satisfy European Standards requirements; the instrument can be used over the full Working

temperature range by using the temperature coefficient to calculate accuracy at the ambient temperature of use.

Temperature coefficient ± 0.1 % of range/Kelvin

Operating errors Refer to operating temperature range and RH< 20 RE, RS< 100 RE

The maximum percentage operating error within the measurement range does not exceed ± 30 % with the measured value as fiducial value, as determined in

accordance with Table 1 in the 1625 Users Manual.

The operating error applies under the rated operating conditions given in IEC1557-1 and the following:

• injection of series interference voltages with system frequencies of 400 Hz, 60 Hz, 50 Hz, 162/3Hz or with dc voltage respectively across the terminals E (ES)

and S. The rms value of the series interference voltage shall be 3 V;

• resistance of the auxiliary earth electrode and of the probes: 0 to 100 x RAbut b50 k7;

• system voltages between 85 % and 110 % of the nominal voltage and between 99 % and 101 % of the nominal system frequency for measuring equipment

with a mains supply and/or measuring equipment deriving its output voltage directly from the distribution system.

6 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

Limits of error Refer to nominal temperature range

Climate class C1 (IEC 654-1), -5 °C to 45 °C, 5 % to 95 % RH

Type of protection IP56 for case, IP40 for battery door according to EN60529

Max voltage !socket to socket

Urms = 0 V

Sockets ” “ to each other in any combination, max. Urms = 250 V (pertains to misuse)

EMC (Emission Immunity) IEC 61326-1:1997 Class A

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 alkali-manganese-batteries (IEC LR6 or type AA )

Battery life span With IEC LR6/type AA: typ. 3,000 measurements (RE+RHb1k7)

With IEC LR6/type AA : typ. 6,000 measurements (RE+ RH> 10 k7)

Dimensions (WxHxD) 250 mm x 133 mm x 187 mm (9.75 in x 5.25 in x 7.35 in)

Weight b1.1 kg (2.43 lb) without accessories

b5.5 kg (12.13 lb) incl. accessories and batteries in carrying case

Case material NORYL, shock -and scratch proof thermoplast

Measurement of interference voltage dc + ac (UST)

Measuring Limits of error: method Fullwave rectification

Measuring Range Display Range Resolution Frequency Range Limits of Error

1 V to 50 V 0.0 V to 50 V 0.1 V dc/ac 45 Hz to 400 Hz sine ± (5 % of rdg + 5 digit)

Measuring sequence approx. 4 measurements/s

Internal resistance approx. 1.5 M7

Max. overload Urms = 250 V

Measurement of interference frequency (F )

Measuring method Measurement of oscillation period of the interference voltage

Measuring Range Display Range Resolution Range Limits of Error

6.0 Hz to 400 Hz 16.0 Hz to 299.9 Hz to 999 Hz 0.1 Hz to 1 Hz 1 V to 50 V ± (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*

Noise rejection 120 dB (162/3, 50 , 60, 400 Hz)

Max. overload Urms = 250 V

7 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

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 RAbut b50 k7E5 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 Part 5, 4.3 R

A = intrinsic error

En = variations

R = routine test

T = type test

Measuring

Range Display Range Resolution Instrinsic Error Max. Operating Error

0.020 7to 0.001 7to 2.999 70.001 7± ( 2 % of rdg + 2 digit ) ± ( 5 % of rdg + 5 digit )

300 k73.00 7to 29.99 70.01 7

30.0 7to 299.9 70.1 7

0.300 k7to 2.999 k717

3.00 k7to 29.99 k710 7

30.0 k7to 299.9 k7100 7

Measuring time typ. 8 sec. 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

Measuring error of RH and RS typ. 10 % of RE+ RS+ RH

Max. probe resistance b1 M7

Max. auxiliary earth electrode resistance b1 M7

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 (see diagram), the display shows a warning symbol !and a notice that RSor RHare too high.

8 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

Automatic switchover of measuring resolution in

dependence to auxiliary earth electrode resistance RH

RH with Umeas = 48 V RH with Umeas = 20 V Resolution

< 300 7< 250 71m7

< 6 k7< 2.5 k710 m7

< 60 k7< 25 k7100 m7

< 600 k7< 250 k717

Selective measurement of the earthing

resistance (RE )

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 (R*)

Noise rejection 120 dB (162/3, 50, 60, 400 Hz)

Max. overload Max. Urms = 250 V (measurement will

not be started)

Measuring Range Display range Resolution Intrinsic error* Operating error*

0.020 7to 30 k70.001 to 2.999 70.001 7± (7 % of rdg + 2 digit) ± (10 % of rdg + 5 digit)

3.00 to 29.99 70.01 7

30.0 to 299.9 70.1 7

0.300 to 2.999 k717

3.00 to 29.99 k710 7

* With recommended current clamps/transformers.

Additonal error because of probe- and auxiliary earth

typ. electrode resistance

Measuring error of RHand RSTyp. 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 a transformer (1000:1)

9 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers

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 Display range Resolution Intrinsic error Operating errors

0.020 7to 300 k70.001 7to 2.999 70.001 7± (2 % of rdg + 2 digit) ± (5 % of rdg + 5 digit)

3.0 7to 29.99 70.01 7

30 7to 299.9 70.1 7

300 7to 2999 717

3.0 k7to 29.99 k710 7

30.0 k7to 299.9 k7100 7

Measuring time typ. 6 sec.

Max. interference voltage 24 V, with higher voltages measurement will not be started

Max overload Urms max. = 250 V

Resistance measurement (R )

Measuring method current- voltage measurement as per IEC61557-4 possible

Open circuit voltage 20 V dc

Short circuit current 200 mA dc

Formation of measured value with 4-pole measurement wires on H, S, ES can be extended without additional error.

Resistances > 1 7in wire E can cause additional error of 5m 7/7.

Measuring range Display range Resolution Intrinsic error Operating error

0.020 7to 3 k70.001 7to 2.999 70.001 7± (2 % of rdg + 2 digit) ± (5 % of rdg + 5 digit)

3.0 7to 29.99 70.01 7

30.0 7to 299.9 70.1 7

300 7to 2999 717

Measuring sequence Approx. 2 measurements/s

Measuring time Typ. 4 sec. incl. reversal of polarity (2-pole or 4-pole)

Max. interference voltage b3 V ac or dc, with higher voltages measurement will not be started

Max inductivity 2 Henry

Max. overload Urms = 250 V

Compensation of lead resistance (RK)

Compensation of lead resistance (RK) can be switched on in functions RE3-pole, RE4-pole , R~ , and R 2-pole

Formation of measured value Rdisplay = Rmeasured - Rcompensated*

* Value of setpoint entry RK= 0.000 7, variable from 0.000 to 29.99 7by means of measuring adjustment.

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