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Fluke 1621 Earth Ground Tester
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Fluke 1621 Earth Ground Tester

Provider: Fluke
Category: Fluke-Test tools / Earth Ground Testers
Price: Call us (84-8) 39 572 812

Fluke 1621

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


General specifications
Measuring functions
  3-pole earth ground resistance, 2-pole ac resistance of a conductor, Interference voltage
Intrinsic error
  Refers to the reference temperature range and is guaranteed for one year
Measuring rate
  2 measurements/second
  One 9 volt alkaline (LR61)
Battery condition
  LO-BAT is displayed if voltage drops below 6.5 V
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 performance[2]
Working: -10 °C to +50 °C (+14 °F to +122 °F)
Operating: 0 °C to +35 °C (+32 °F to +95 °F)
Storage: -20 °C to +60 °C (+68 °F to +140 °F)
Reference: +23 °C ± 2 °C (+73 °F ± 4 °F)
Temperature coefficient
  ± 0.1 % of range per degree Kelvin
  IEC/EN 61010-1, 600 V CAT II, pollution degree 2
  113 mm x 54 mm x 216 mm (4.5 in x 2.1 in x 8.5 in), including holster
  850 g (1.9 lb), including standard accessories, volume approximately 600 cm3
  [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.

Electrical 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 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

Measuring range
0.15 Ω to 20 Ω
Resolution 0.01 Ω
Display range 0 to 19.99 Ω
200 Ω
Resolution 0.1 Ω
Display range 20 to 199.9 Ω
2 kΩ
Resolution 1 Ω
Display range 200 to 1999 Ω
Intrinsic uncertainty
  ± (6 % of measured value + 5D)
Operating uncertainty IEC 61557[1]
  ± (18 % of measured value + 5D)
  [1] 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.

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