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Fluke 1625 user training final

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Haris Ahmad
Haris Ahmad

This document describes the operating elements and measurement functions of the Fluke-1625 GEO Earth Ground Tester. It has a digital LCD display to show measured values, units, and operator guidance. It can perform 2-pole, 3-pole, and 4-pole earth resistance measurements, as well as resistance measurements from 0.001 ohms to 300 kilohms using AC voltage and from 0.001 ohms to 3 kilohms using DC voltage with automatic polarity reversal. Instructions are provided for selective earth resistance measurements using a current clamp.

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Fluke-1625 GEO Earth Ground Testers
Description of the Operating Elements
Detail of Panel 66
Panel Description
Panel Description
LCD Display 1. Digital display of measured value 2. Measuring function field to display measuring function 3. Unit field: V, 立, k立, Hz 4. Special characters for operator guidance
RA 2-pole, 3-pole Measurements To make 2-pole or dead-earth measurements, connect a jumper between terminals H/C2 and S/P2 with the supplied connector cable. Refer to Figure. Then follow steps 1 thru 4 except use only earth electrode and the auxiliary earth electrode with minimum distance between them of 20 m. A Select function RA 3-pole. Display is as shown below.
Fluke 1625 user training final
Fluke 1625 user training final
RA 4-pole Measurements
Fluke 1625 user training final
RA 3-pole Selective Earth Resistance Measurement with Current Clamp
Fluke 1625 user training final
RA 4-pole Selective Earth Resistance Measurement with Current Clamp
Fluke 1625 user training final
Measurement of Resistances Resistance Measurement (R~) This measuring function determines the ohmic resistance between 0.001 立 and 300 k立. The measurement is done with AC voltage. For measurements of very low resistances a compensation of the connecting leads is suggested (see Compensation of Measuring Lead Resistance).
Fluke 1625 user training final
Resistance measurement (RF) In this measuring mode all resistances from 0.001 立 to 3 k立 can be measured with DC voltage and automatic polarity reversal as per EN61557-5. To achieve highest accuracy 4 pole measurements are possible. To balance the extension lead, a compensation has to be done.
Fluke 1625 user training final

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Fluke 1625 user training final

  • 2. Description of the Operating Elements
  • 6. LCD Display 1. Digital display of measured value 2. Measuring function field to display measuring function 3. Unit field: V, 立, k立, Hz 4. Special characters for operator guidance
  • 7. RA 2-pole, 3-pole Measurements To make 2-pole or dead-earth measurements, connect a jumper between terminals H/C2 and S/P2 with the supplied connector cable. Refer to Figure. Then follow steps 1 thru 4 except use only earth electrode and the auxiliary earth electrode with minimum distance between them of 20 m. A Select function RA 3-pole. Display is as shown below.
  • 12. RA 3-pole Selective Earth Resistance Measurement with Current Clamp
  • 14. RA 4-pole Selective Earth Resistance Measurement with Current Clamp
  • 16. Measurement of Resistances Resistance Measurement (R~) This measuring function determines the ohmic resistance between 0.001 立 and 300 k立. The measurement is done with AC voltage. For measurements of very low resistances a compensation of the connecting leads is suggested (see Compensation of Measuring Lead Resistance).
  • 18. Resistance measurement (RF) In this measuring mode all resistances from 0.001 立 to 3 k立 can be measured with DC voltage and automatic polarity reversal as per EN61557-5. To achieve highest accuracy 4 pole measurements are possible. To balance the extension lead, a compensation has to be done.