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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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