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Fluke 1621 Earth Ground Testers

Features basic ground testing methods including 3-pole Fall-of-Potential as well as 2-pole ground resistance tests. Its convenient size, rugged holster, and large, clear LCD display make it an ideal field earth ground tester, for most electrical grounding work environments.

Fluke 1621 Earth Ground Tester
1621 $1,499.99 USD Availability:
4 to 5 Weeks
Fluke 1621 KIT Earth Ground Tester
1621-KIT $1,799.99 USD Availability:
7 to 8 Weeks

Fluke 1621 Series Offers

  • Easily capture values with single-button operation
  • 3-pole Fall-of-Potential earth testing for basic measurements
  • 2-pole resistance measurements for added versatility
  • 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
  • 600 V Cat II

Fluke 1621 Specifications

Maximum Deviations
E1 Influence Factor Position
E1 Deviation Influence 0%
E2 Influence Factor Supply voltage
E2 Deviation Influence 0%
E3 Influence Factor Temperature E3
E3 Deviation Influence 2.3%
E4 Influence Factor Serial interference voltage (20 V)
E4 Deviation Influence 0.6%
E5 Influence Factor Probe- and auxiliary probe resistance
E5 Deviation Influence 10%
Test Voltage 3.7 kV
Protection type IP 40; IEC/EN 60529
Electromagnetic Compatibility
Emission IEC/EN 61326 Class B
Immunity IEC/EN 61326 Annex C
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 24V AC
Short Circuit Current > 50 mA AC
Measuring Frequency 128 Hz
Maximum Permissible Overload 250 Veff
Measuring Time 8 seconds (average from when START is pressed)
Limit Input Tester retains set value even if instrument is turned off (assuming battery power supply is sufficient)
Automatic Changeover of Resolution
RH < 7 kΩ
Resolution 0.01 Ω
RH < 50 kΩ
Resolution 0.1 Ω
RH > 50 kΩ
Resolution 1 Ω
Interference Voltage Display AC/DC
Vmax 30 Veff
Common Mode Rejection > 80 dB at 50 Hz and 60 Hz
Ri 680 kΩ
Measuring Uncertainty < 10% for pure AC and DC signals
Measuring Specifications
Range 0.15 Ω to 20 Ω
Resolution 0.01 Ω
Display range 0 to 19.99 Ω
Range 200 Ω
Resolution 0.1 Ω
Display range 20 to 199.9 Ω
Range 2 kΩ
Resolution 1 Ω
Display range 200 to 1999 Ω
Intrinsic Uncertainty ±(6% of measured value + 5D)
Operating uncertainty IEC 61557 ±(18% of measured value + 5D)
1. 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.
2. 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.
3. Covers all deviations caused by influence quantities E1–E5. If the deviation E4 caused by high probe or auxiliary probe resistance is higher than specified flashes. Measured values are outside of the specified operating uncertainty.
General Specifications
Measuring Functions 3-pole earth ground resistance, 2-pole ac resistance of a conductor, Interference voltage
Intrinsic Eerror Refers to the reference temperature range and is guaranteed for one year
Measuring Rate 2 measurements/second
Battery1 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 Performance2 Working: -10 to 50°C (14 to 122°F)
Operating: 0 to 35°C (32 to 95°F)
Storage: -20 to 60°C (68 to 140°F)
Reference: 23 ± 2°C (73 ± 4°F)
Temperature Coefficient ±0.1% of range per degree Kelvin
Safety IEC/EN 61010-1, 600 V CAT II, pollution degree 2
Dimensions 113 x 54 x 216 mm (4.5 x 2.1 x 8.5 in), including holster
Weight 850 g (1.9 lb), including standard accessories, volume approximately 600 cm3

What's included with the Fluke 1621

  • Fluke 1621 Earth Ground Testers
  • Click on a category to view a selection of compatible accessories with the Fluke 1621 Earth Ground Testers.

    Fluke CXT280 CXT280
    Rugged Pelican Hard Case for the Fluke 280 Series.

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