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SKU: 1630-2FC Categories: , Tag:


Fluke 1630-2 FC Earth Ground Loop and Leakage Clamp

Electrical Specifications
Maximum voltage to earth ground1000 V
Battery typeAA alkaline IEC/EN LR6 (x4)
Battery lifeMore than 15 hours*
* In Ground Resistance measurement mode, with backlight turned off, and RF mode turned off
Frequency range40 Hz to 1 kHz
Ingress protectionIEC/EN 60529: IP30 with jaw closed
LCDDigital reading9999 counts
Refresh rate4 per second
Operating temperature-10 °C to + 50 °C 
Storage temperature-20 °C to + 60 °C
Operating humidityNon 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)
Operating altitude2000 m (6561 feet)
Storage altitude12 000 m (39,370 feet)
Reference temperature23 °C ±5 °C (73 °F ±9 °F)
Temperature coefficient0.15% x (specified accuracy)/ °C (<18 °C or >28 °C [<64.4 °F or >82.4 °F])
Overload indicationOL
Data logging capacityMinimum of 32,760 measurements
Data logging interval1 second to 59 minutes and 59 seconds
Display reading specification with standard loop resistance
Input (Ω)MinimumMaximum
GeneralIEC/EN 61010-1: Pollution Degree 2 IEC/EN 61557-1
MeasurementIEC/EN 61010-2-032: CAT IV 600 V / CAT III 1000 V
Current clamp for leakage current measurementsIEC/EN 61557-13: Class 2, ≤30 A/m
Resistance to earthIEC/EN 61557-5
Effectiveness of thepProtective measuresIEC/EN 61557-16
Electromagnetic compatibility (EMC)InternationalIEC/EN 61326-1: Portable Electromagnetic Environment
CISPR 11: Group 1, Class B, IEC/EN 61326-2-2
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
Wireless Radio
Frequency range2412 MHz to 2462 MHz
Output power<10 mW
Radio frequency certificationFCC ID:T68-FBLE IC:6627A-FBLE
General Specifications
Conductor size40 mm (1.57 in) approximately
Dimensions (L x W x H)283 x 105 x 48 mm (11.1 x 4.1 x 1.9 in)
Weight880g (31 oz)
WarrantyOne year
Earth Ground Loop Resistance
RangeAccuracy1  ± (% of reading + Ω)
0.025 Ω to 0.249 Ω1.5% + 0.02 Ω
0.250 Ω to 0.999 Ω1.5% + 0.05 Ω
1.000 Ω to 9.999 Ω1.5% + 0.10 Ω
10.00 Ω to 49.99 Ω1.5% + 0.30 Ω
50.00 Ω to 99.99 Ω1.5% + 0.50 Ω
100.0 Ω to 199.9 Ω3.0% + 1.0 Ω
200.0 Ω to 399.9 Ω5.0% + 5.0 Ω
400 Ω to 599 Ω10.0% + 10 Ω
600 Ω to 1500 Ω20.00%
1  Loop resistance with no inductance, conductor centered and perpendicular to jaw
Earth ground leakage current mA
Autorange 50/60 Hz, True rms, crest factor CF ≤3
RangeResolutionAccuracy1  ± (% of reading + mA)
0.200 mA to 3.999 mA1 μA2.0% + 0.05 mA
4.00 mA to 39.99 mA10 μA2.0% + 0.03 mA
40.0 mA to 399.9 mA100 μA2.0% + 0.3 mA
0.400 A to 3.999 A1 mA2.0% + 3 mA
4.00 A to 39.99 A10 mA2.0% + 30 mA
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
  • 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 measurements in memory at the set logging interval. Saves time by recording and storing measured values
  • Alarm threshold – User-defined high/low alarm limits, for rapid measurement evaluation
  • Band-pass filter – Selectable band-pass filter function removes unwanted noise from the ac leakage current measurement

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 buildings, on power pylons or anywhere you don’t have access to soil to place auxiliary test stakes.

Fluke Connect® Wireless System

The 1630-2 FC supports the Fluke Connect Wireless System (may not be available in all regions). Fluke Connect wirelessly connects the clamp with an app on your smartphone or tablet. The app shows the ground resistance measurements on your smartphone or tablet display. You can save these measurements, GPS location from your phone and images to Fluke Connect Cloud storage and share with your team.