TECHNICAL DATA

Fluke 1630-2 FC
Earth Ground Clamp

Stakeless earth ground loop and ac leakage current

clamp for fast, safe indoor/outdoor earth ground
resistance and ac leakage current tests.
Test the grounding components of equipment in hard-to-reach
spaces, including areas that are indoors or fully paved and do not
permit driving auxiliary test stakes. Stay on line—identify ground
loop resistance without the need to disconnect then reconnect the
earth electrode from the system.
The Fluke 1630-2 FC Stakeless Earth Ground Clamp is the kind of
high-quality, rugged tool you expect from Fluke. Heavy-duty clamp
jaw stays in alignment and in calibration even in every day,
on-the-job industrial environments.

Stakeless measurement
The 1630-2 FC clamp measures earth ground loop resistances
for multi-grounded systems using the dual-clamp jaw. This test
technique eliminates the dangerous and time-consuming activity
of disconnecting parallel grounds, as well as the process of finding
suitable locations for auxiliary test stakes. You can also perform
ground tests in places that were previously difficult: inside build-
ings, on power pylons or anywhere you don’t have access to soil to
place auxiliary test stakes.
With this test method, a two-process measurement is made around
the earth ground wire or bus bar using the specially-designed jaw
of the 1630-2 FC clamp. Auxiliary test stakes are not used at all.
AC LEAKAGE CURRENT A known voltage is induced by the source in the clamp, and the
MEASUREMENT current is measured by the sensor in the clamp. The tester auto-
Identify ac leakage currents without dis-
matically determines the earth loop resistance for this section of
connecting the earth ground stake from
the grounding system–ideal for system
the earthing system.
troubleshooting.

RUGGED
Heavy-duty clamp jaw stays in alignment
and in calibration even in every day, on-
the-job industrial environments.

LOGGING MEASUREMENTS
The earth ground clamp saves time by
automatically recording data at pre-set
intervals and saves up to 32,760 mea-
surements in memory at the set logging
interval. Saves time by recording and stor-
ing measured values.

ALARM THRESHOLD FLUKE CONNECT© WIRELESS SYSTEM

User-defined high/low alarm limits, for rapid The 1630-2 FC supports the Fluke Connect © Wireless System
measurement evaluation. (may not be available in all regions). Fluke Connect © wirelessly
connects the clamp with an app on your smartphone or tablet.
BAND-PASS FILTER The app shows the ground resistance measurements on your
Selectable band-pass filter function smartphone or tablet display. You can save these measurements,
removes unwanted noise from the ac leak- GPS location from your phone and images to Fluke Connect Cloud
age current measurement. storage and share with your team.
 Specifications
Electrical specifications
Maximum voltage to earth ground 1000 V
Battery type 4 x 1.5 V AA alkaline IEC/EN LR6
Battery life More than 15 hours*
Frequency range 40 Hz to 1 kHz
Ingress protection IEC/EN 60529: IP30 with jaw closed
LCD Digital reading 9999 counts
Refresh rate 4/s
Temperature Operating -10 °C to +50 °C (14 °F to +122 °F)
Storage -20 °C to +60 °C (-4 °F to +140 °F)
Operating humidity Non condensing (<10 °C) (< 50 °F)
≤90 % RH (at 10 °C to 30 °C [50 °F to 86 °F])
≤75 % RH (at 30 °C to 40 °C [86 °F to 104 °F])
≤45 % RH (at 40 °C to 50 °C [104 °F to 122 °F])
(Non condensing)
Altitude Operating 2000 m (6561 ft.)
Storage 12,000 m (39370 ft.)
Reference temperature 23 °C ±5 °C (73 °F ±9 °F)
Temperature coefficient 0.15 % X (specified accuracy)/ °C (<18 °C or >28 °C ([<64.4 °F or >82.4 °F])
Overload indication OL
Display Reading Specification with Input (Ω) Minimum Maximum
Loop Resistance Standard
0.474 0.417 0.531
0.5 0.443 0.558
10 9.55 10.45
100 96 104.0
Data logging capacity Minimum of 32,760 measurements
Data logging interval 1 second to 59 minutes and 59 seconds
Safety General IEC/EN 61010-1: Pollution Degree 2 IEC/EN 61557-1
Measurement IEC/EN 61010-2-032: CAT IV 600 V / CAT III 1000 V
Current clamp for leakage current IEC/EN 61557-13: Class 2, ≤30 A/m
measurements
Resistance to Earth IEC/EN 61557-5
Effectiveness of the protective IEC/EN 61557-16: cutoff frequency 20 kHz (-3 dB)
measures
Electromagnetic International IEC/EN 61326-1: Portable Electromagnetic Environment
compatibility CISPR 11: Group 1, Class B, IEC/EN 61326-2-2
(EMC)
Korea (KCC) Class A equipment (Industrial Broadcast & Communications Equipment)
USA (FCC) 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.

* In Ground Resistance measurement mode, with backlight turned off, and RF mode turned off
Wireless radio
Frequency range 2412 MHz to 2462 MHz
Output power <10 mW
Radio frequency certification FCC ID:T68-FBLE IC:6627A-FBLE

General specifications
Conductor size 40 mm (1.57 in) approximately
Dimensions (L x W x H) 283 mm x 105 mm x 48 mm (11.1 in x 4.1 in x 1.9 in)
Weight 880g (31 oz)
Warranty One year

2 Fluke Corporation Fluke 1630-2 FC Earth Ground Clamp

 Earth ground loop resistance
Range Accuracy [1]
(± % of reading + Ω)
0.025 Ω to 0.249 Ω 1.5% + 0.02 Ω
0.250 Ω to 0.999 Ω 1.5% + 0.05 Ω
1.000 Ω to 9.999 Ω 1.5% + 0.10 Ω
10.00 Ω to 49.99 Ω 1.5% + 0.30 Ω
50.00 Ω to 99.99 Ω 1.5% + 0.50 Ω Preventive maintenance simplified. Rework eliminated.
100.0 Ω to 199.9 Ω 3.0% + 1.0 Ω
Save time and improve the reliability of your maintenance data by
200.0 Ω to 399.9 Ω 5.0% + 5.0 Ω wirelessly syncing measurements using the Fluke Connect system.
400 Ω to 599 Ω 10.0% + 10 Ω • Eliminate data-entry errors by saving measurements directly from the
tool and associating them with the work order, report or asset record.
600 Ω to 1500 Ω 20.00% • Maximize uptime and make confident maintenance decisions with data
[1] Loop resistance with no inductance, conductor you can trust and trace.
centered and perpendicular to jaw. • Access baseline, historical and current measurements by asset.
• Move away from clipboards, notebooks and multiple spreadsheets with
a wireless one-step measurement transfer.
Earth ground leakage current mA • Share your measurement data using ShareLive TM video calls and emails.
Autorange 50/60 Hz, True rms, crest factor CF ≤3 • The 1630-2 FC is part of a growing system of connected test tools and
equipment maintenance software. Visit the website to learn more about
Range Resolution Accuracy [1] the Fluke Connect system.
0.200 mA to 3.999 mA 1 μA ±2.0 % rdg ±0.05 mA
Find out more at flukeconnect.com
4.00 mA to 39.99 mA 10 μA ±2.0 % rdg ±0.03 mA
40.0 mA to 399.9 mA 100 μA ±2.0 % rdg ±0.3 mA
0.400 A to 3.999 A 1 mA ±2.0 % rdg ±0.003 A
4.00 A to 39.99 A 10 mA ±2.0 % rdg ±0.030 A

[1] Applies to signal frequency

* 40 Hz to 1 kHz with filter set to OFF
* 40 Hz to 70 Hz with filter se to ON

All trademarks are the property of their respective owners. WiFi or cellular service required to share
data. Smartphone, wireless service and data plan not included with purchase. First 5 GB of storage is
free. Phone support details can be viewed at fluke.com/phones.
Smart phone wireless service and data plan not included with purchase. Within your
provider’s wireless service area and subject to your plan’s pricing and other terms.
Fluke Connect is not available in all countries. Some Fluke Connect features require a
subscription subject to payment terms and may not be available in all countries.

Fluke. Keeping your world

up and running.®
Fluke Corporation
PO Box 9090, Everett, WA 98206 U.S.A.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. (800) 443-5853 or
Ordering information Fax (425) 446-5116
In Europe/M-East/Africa +31 (0) 40 2675 200 or
Fax +31 (0) 40 2675 222
FLUKE-1630-2 FC Earth Ground Loop and Leakage In Canada (800)-36-FLUKE or
Clamp Fax (905) 890-6866
From other countries +1 (425) 446-5500 or
Fax +1 (425) 446-5116
Included Web access: http://www.fluke.com
©2016 Fluke Corporation.
Earth Ground clamp, hard case, loop resistance Specifications subject to change without notice.
standard, 4 AA batteries, safety information 12/2016 6008392b-en

guide and quick reference guide Modification of this document is not permitted
without written permission from Fluke Corporation.

3 Fluke Corporation Fluke 1630-2 FC Earth Ground Clamp