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AEMC 6471 Kit 2135.50 300ft. 4-Point Ground Resistance Testers
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AEMC 6471 Kit 2135.50 300ft. 4-Point Ground Resistance Testers



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6471 4-Point Ground Resistance Testers

The Ground Resistance Tester Model 6471 is a portable measurement instrument designed to measure Ground Resistance with 2 clamps (no auxiliary rods), Bond/Connection Resistance (2-Pole and 4-Pole Kelvin sensing), Ground Resistance (3-Pole or 4-Pole), Ground Coupling Resistance, and Selective Ground Resistance, Soil Resistivity (Wenner or Schlumberger method). The Model 6471 measures from 0.01 to 99.99kO and is auto-ranging, automatically seeking out the optimum measurement range, test frequency and test current.

Easy-to-use - Simply connect the leads, select the test mode, press Start and read the results. Up to 512 test results can be stored in internal memory for later recall to the display or downloaded to a PC via DataView® software.

The Model 6471 is Cat IV rated to 50V and is over voltage protected to more than 250VAC against accidental connection to live circuits. The voltage is also displayed on screen. In the event of a system fault, the Model 6471 can withstand 250VAC.

Additional features of the Model 6471 include a heavy-duty field case sealed against dust and water when closed (the test button is also sealed against the elements); manual and automatic test frequency selection from 41 to 513Hz; user selectable 3-Pole Fall of Potential or 4-Pole Soil Resistivity test methods and user selectable 2-Pole or 4-Pole Bond Resistance test method. The Ground Resistance Tester Model 6471 is rugged, easy-to-use and ideal for maintenance crews performing numerous tests. It exceeds mechanical and safety specifications for shock, vibration and drop tests per IEC standards. The adjustable test frequency provides for rejection of high levels of interference, allowing it to be used under difficult conditions such as high stray currents that affect accuracy.

Applications:

  • 3-Point measurements of resistance to ground of ground rods and grids. 3-Point measurements are generally used when the electrode or grid can be easily disconnected.
  • 4-Point tests or soil resistivity measurements. Locating areas of lowest soil resistivity is essential for achieving an economical grounding installation.
  • Touch and step potential testing measurements. These tests are recommended when the ground cannot be disconnected, where ground faults are highly likely to occur, or when the “footprint” of grounded equipment (the outline of the part of equipment in contact with earth) is comparable to the size of the ground to be tested.
  • 2- or 4-Wire tests for continuity tests on bonding or on grounding systems. Test is a DC resistive test using 250mA or more and is used to check bonding of all connection points on the ground system.
  • Earth coupling measurement and display. Used to estimate the influence of two earth resistance systems that are not connected to each other.

Features:

  • Test ground resistance using the 2 clamp method (no auxiliary rods needed)
  • 2- and 4-Pole Bond Resistance/Continuity measurement (DC Resistance) with automatic polarity reversal
  • 3-Pole Fall-of-Potential measurement with manual or automatic frequency selection
  • 4-Pole Soil Resistivity measurement with automatic calculation of Rho (r) and user selection of the Wenner or Schlumberger test method
  • 3-Pole Earth Coupling measurement
  • Manual and Automatic frequency scan from 41 to 513Hz for optimum test accuracy in electrically noisy environments
  • Selectable test voltage of 16 or 32V up to 250mA of test current
  • Auto-off power management
  • Automatic recognition of all electrode connections and their resistance value
  • Stores up to 512 complete test results in internal memory
  • Optically isolated USB communication
  • Remote set up and operation of all measurements using DataView® software
  • Rechargeable NiMH batteries from wall charger or vehicle power
  • Rugged dustproof and rainproof field case – IP54 rated in closed position
  • Grounding standards IEC 61557 parts 4 and 5 compliant
  • Includes DataView® software for data storage, real-time display, analysis, report generation and system configuration

Specifications:

  • 2 Clamp Measurement
  • Range : 0.10 to 500&
  • Resolution : 0.01 to 1&
  • Measurement Frequency : Auto: 1367Hz, Manual: 128Hz-1367Hz-1611Hz-1758Hz
  • 3-Point Measurement
  • Range (Auto-Ranging) : 0.09& to 99.9k&
  • Resolution : 0.01& to 100&
  • Test Voltage : Nominal 16 or 32VRMS user selectable
  • Resistance Measurement Frequency : 41 to 513Hz automatic or user selectable
  • Test Current : Up to 250mA
  • Accuracy : ±2% of Reading + 1ct @ 128Hz
  • External Voltage Measurement
  • Range (Auto-Ranging) : 0.1 to 65.0Vac/dc – DC to 440Hz
  • Accuracy : ±2% of Reading + 1ct
  • Resistance Measurement (Bond Testing)
  • Measurement Type : 2-Pole (with lead resistance compensation) or

                                          : 4-Pole (Kelvin sensing) user selectable

  • Range (Auto-Ranging) : 2-Pole 0.01& to 99.9k&; 4-Pole 0.001& to 99.99k&
  • Accuracy : ±2% of Reading + 2cts
  • Test Voltage : 16Vdc (+, - or auto polarity)
  • Test Current : Up to 250mA max
  • Data Storage
  • Memory Capacity : 512 test results
  • Communication : Optically Isolated USB
  • Power Source : 9.6V rechargeable battery pack (included)
  • Recharging Source : 110/220 50/60Hz external charger with 18Vdc, 1.9A output or 12V vehicle

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