Fluke 1621 Data Sheet

Fluke 1621

Basic Earth Ground Tester

The Fluke 1621 is an easy-to-use earth ground tester.
The first line of defense in detecting reliable ground
connections, the unit features basic ground testing
methods including 3-pole Fall-of-Potential as well as
2-pole ground resistance. Its convenient size, rugged
holster, and large, clear LCD display make it an ideal
field earth tester, for most work environments. With
a simple user interface and intuitive functionality, the
Fluke 1621 is a handy tool for electrical contractors,
utility test engineers, and earth ground specialists.

3-pole Fall-of-Potential earth testing for basic measurements

•

2-pole resistance measurements for added versatility

•

Easily capture values with single-button operation

•

Ensure accurate measurements with automatic ‘noise’ voltage detection

•

Hazardous voltage warning offers increased user protection

•

Clearly read and record data with a large, backlit display

•

Rugged holster and design for tough work environments

•

Portable size allows for easy transportation

•

Instantly be alerted to measurements outside of your set limit, when

•

you use the adjustable limit setting

Technical Data

General specifications

Measuring functions 3-pole earth ground resistance, 2 pole ac resistance of a conductor,

Interference voltage

Intrinsic error Refers to the reference temperature range and is guaranteed for one year
Measuring rate 2 measurements/second
Battery One 9 volt alkaline (LR61)
Battery condition LO-BAT is displayed if voltage drops below 6.5 V
Voltages Between jacks H/C2 and E/C1: 250 Veff maximum (effective voltage)

Between jacks S/P2 and E/C1: 250 Veff maximum

Climatic class VDE/VDI 3540 RZ (conforming to KWG as per DIN 40040, 4/87)
Temperature performance Working: -10 °C to +50 °C (+14 °F to +122 °F)

Operating: 0 °C to +35 °C (+32 °F to +95 °F)
Storage: -20 °C to +60 °C (+68 °F to +140 °F)
Reference: +23 °C ± 2 °C (+73 °F ± 4 °F)

Note: If the tester is not going to be used, or is being stored for a long period, remove the battery and store separately from the tester to avoid
damage from battery leakage.
Note: The four temperature ranges for the tester exists 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.

General specifications cont.

Temperature coefficient ± 0.1 % of range per degree Kelvin
Safety IEC/EN 61010-1, 600 V CAT II, pollution degree 2
Dimensions 113 mm x 54 mm x 216 mm (4.5 in x 2.1 in x 8.5 in.), including holster
Weight 850 g (1.9 lb), including standard accessories, volume approximately 600 cm

Electrical specifications

Maximum deviations

3

Parameter Influence factor Deviation influence

E

1

E

2

E

3

E

4

E

5

Serial interference voltage (20 V) 0.6 %

Probe- and auxiliary probe resistance 10 %

Position 0 %

Supply voltage 0 %

Temperature E

3

2.3 %

Test voltage 3.7 kV
Protection type IP 40; IEC/EN 60529

Electromagnetic
compatibility

RE resistance measurement

Measuring method Current-voltage measurement with improved cross-talk attenuation,

no compensation of measuring lead resistance, with probe (3-pole)
or without probe (2-pole), as per IEC/EN 61557-5

Open circuit voltage 23 to 24 V ac
Short circuit current > 50 mA ac
Measuring frequency 128 Hz

Maximum permissible
overload

Measuring

range Resolution Display range

0.15 W to 20 W 0.01 W 0 to 19.99 W
200 W 0.1 W 20 to 199.9 W

2 kW 1 W 200 to 1999 W

Notes:

[1]

Covers all deviations caused by influence quantities E1-E5.
If the deviation E
Measured values are outside of the specified operating uncertainty.

Measuring time 8 seconds (average from when START is pressed)
Limit input Tester retains set value even if instrument is turned off (assuming

Note: If tester detects stray interference voltage ≥ 20 V, W is displayed and the measurement is not started.

caused by high probe or auxiliary probe resistance is higher than specified flashes.

4

250 Veff

uncertainty

± (6 % of

measured value

battery power supply is sufficient)

Intrinsic

+ 5D)

Operating uncer-

tainty IEC 61557

± (18 % of measured

value + 5D)

Emission: IEC/EN 61326 Class B
Immunity: IEC/EN 61326 Annex C

Ordering information

Fluke-1621 Earth Ground Tester

Includes:

Users manual

•

Two measuring leads with

•

alligator clips, 2 m (6 ft)

One battery, 9 V alkaline (LR61)

•

One protective holster, yellow

•

One CD-ROM

•

Optional accessories

[1]

Cable-Reel 50 m Ground/Earth

•

Cable Reel 50 M Wire (162.5 ft)

Cable-Reel 25 m Ground/Earth

•

Cable Reel 25 M Wire (81.25 ft)

Earth Stake Ground/Earth Stake

•

ES-162P3 Stake Set for 3-Pole

•

Measurement (includes three
stakes, one 50 M cable reel,
and one 25 M cable reel)

Automatic changeover of resolution

R

H

< 7 kW 0.01 W
< 50 kW 0.1 W
> 50 kW 1 W

Resolution

Interference voltage display dc + ac

Vmax 30 Veff

Common mode rejection > 80 dB at 50 Hz and

Ri 680 k

Measuring uncertainty < 10 % for pure ac

2 Fluke Corporation Fluke 1621 Basic Earth Ground Testter

60 Hz

W

and dc signals

Fluke. Keeping your world
up and running.

Fluke Corporation
PO Box 9090, Everett, WA USA 98206

Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands

For more information call:
In the U.S.A. [phone] or
Fax [phone]
In Europe/M-East/Africa [phone] or
Fax [phone]
In Canada (800)-36-FLUKE or
Fax [phone]
From other countries [phone] or
Fax [phone]
Web access: http://www.fluke.com

©2007 Fluke Corporation. All rights reserved.
Specifications subject to change without notice.
Printed in U.S.A. 6/2007 3057417 D-EN-N Rev A

®