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FLUKE 1621
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The Fluke 1621 is an easy-to-use earth ground tester.

For ground resistance testing, the 1621 is 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 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.

With a simple user interface and intuitive functionality, the Fluke 1621 is a handy grounding tool for electrical contractors, utility test engineers, and earth ground specialists.

Maximum deviations E1Influence factor Position
E1Deviation influence 0%
E2Influence factor Supply Voltage
E2Deviation influence 0%
E3Influence factor Temperature E3
E3Deviation influence 2.30%
E4Influence factor Serial interference Voltage (20 V)
E4Deviation influence 0.60%
E5Influence factor Probe- and auxiliary probe resistance
E5Deviation 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 24 V 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 DC + AC 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
Name File Type Size Download
Fluke 1621 User's Manual .pdf 360 KB
Fluke 1621 Data Sheet .PDF 226 KB
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