Atec AEMC-6470B User Manual

MULTI-FUNCTION GROUND

Now measure ground

resistance, soil resistivity

RESISTANCE SOIL

and bonding resistance

with one instrument!

RESISTIVITY TESTER

Model 6470-B

► 2- and 4-Wire Bond Resistance/Continuity Measurement (DC Resistance) with automatic polarity reversal

► 3-Pole (3-Point) Fall-of-Potential measurement with manual or automatic frequency selection

► 4-Pole (4-Point) Fall-of-Potential measurement for very low resistance measurements with manual or

automatic frequency selection and automatic lead compensation

► 4-Pole (4-Point) Soil Resistivity measurement with automatic calculation of Rho (r) and user selection of

the Wenner or Schlumberger test method

► 3-Pole (3-Point) Earth Coupling measurement

► Manual and automatic frequency scan from 40 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

► Automatic report generation

► Rechargeable NiMH batteries from wall charger or vehicle power

► Rugged dustproof and rainproof field case – IP54 rated in closed positione

► Grounding standards IEC 61557 parts 4 and 5 compliant

► Includes DataView

and system configuration

software for data storage, real-time display, analysis, report generation

software supplied

Model 6470-B quickly checks ground rod resistance with its Connect - Press - Read approach

The Digital Ground Resistance Tester Model 6470-B is a portable measurement instrument designed to measure Ground Resistance, Soil Resistivity (two methods – Wenner and Schlumberger), Bonding Resistance (DC Resistance 2-Wire and 4-Wire Kelvin sensing) and Earth Coupling resistance. This direct reading tester measures from 0.01 to 99.99kΩ and is auto-ranging, automatically seeking out the optimum measurement range 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 large LCD is easy-to-read and indicates ground electrode resistance, test voltage, current and frequency as well as individual electrode resistance, battery status and more.

The Model 6470-B 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 6470-B can withstand 250VAC.

Additional features of the Model 6470-B 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 40 to 513Hz; user selectable 3-Pole (3-Point) Fall of Potential or 4-Pole (4-Point) Soil Resistivity test methods and user selectable 2-Wire or 4-Wire Bond Resistance test method.

The Model 6470-B is powered by 9.6V, 3.5 Ah NiMH rechargeable batteries. An external recharger powered from 120/230V 50/60Hz is included and provides for testing while recharging. The Model 6470-B can also be vehicle powered from an optional 12V battery adapter.

The Ground Resistance Tester Model 6470-B 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 normally affect accuracy.

Features

► 2- and 4-Wire Bond Resistance/Continuity

Measurement (DC Resistance) with automatic polarity reversal

► 3-Pole (3-Point) Fall-of-Potential measurement

with manual or automatic frequency selection

► 4-Pole (4-Point) Fall-of-Potential measurement

for very low resistance measurements with manual and automatic frequency selection and automatic lead compensation

► 4-Pole (4-Point) Soil Resistivity measurement

with automatic calculation of Rho (r) and user selection of the Wenner or Schlumberger test method

► 3-Pole (3-Point) Earth Coupling measurement

► Manual and automatic frequency scan from

40 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 supplied

► Automatic report generation

► 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

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 the 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.

This 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.

www.aemc.com

Technical Assistance (800) 343-1391

speciFications

MODEL 6470-B

ELECTRICAL

3-Point Measurement Range (Auto-Ranging) 0.01Ω to 99.99kΩ

Resolution 0.01Ω to 100Ω Test Voltage Nominal 16 or 32VRMS user selectable Resistance Measurement Frequency 41 to 513Hz user selectable or automatic selection Test Current Up to 250mA Accuracy ±2% of Reading + 1ct Earth Coupling Measurement Yes

Soil Resistivity 4-Point Measurement Test Method Wenner or Schlumberger selectable with automatic calculation of test results in Ω-meters, Ω-cm or Ω-feet

Range (Auto-Ranging) 0.01 to 99.99kΩ Resolution 0.01 to 100Ω Test Voltage 16 or 32V user selectable Frequency From 41 to 128Hz selectable External Voltage Measurement Range (Auto-Ranging) 0.1 to 65.0V — DC to 450Hz Accuracy 2% of Reading + 3cts

Resistance Measurement (Bond Testing) Measurement Type 2-Point (with lead resistance compensation) or 4-Point (Kelvin sensing) user selectable

Range (Auto-Ranging) 2-Point 0.01Ω to 99.9kΩ; 4-Point 0.001Ω to 99.99kΩ Accuracy ±2% of Reading + 2cts Test Voltage 16V Test Current Up to 250mA max Data Storage Memory Capacity 512 test results Communication Optically isolated USB Automatic Report Generation Yes — tabular listings and Fall-of-Potential plots Power Source 9.6V rechargeable battery pack Recharging Source 110/220 50/60Hz external charger with 18V

MECHANICAL

Test Lead Connection 4mm recessed banana jacks Mechanical Shock Per EN 61557 Vibration Test Per EN 61557 Drop Test Per EN 61557 Dielectric Test 3kV 50/60Hz Dimensions 10.7 x 9.76 x 5.12" (272 x 248 x 130mm) Weight 7.5 lbs (3.5kg) Case Polypropylene Index of Protection IP53 with cover closed

DISPLAY

Display Type Custom 256 segment multi-line LCD Backlight Blue electroluminescent

COMMUNICATION Software ENVIRONMENTAL

Operating Temperature 14° to 122 °F (-10° to 55°C) Storage Temperature -40° to 158°F (-40° to 70°C)

SAFETY

Safety Rating EN 61010-1 50V Cat IV, Pollution Degree 2 Double Insulation Yes CE Mark Yes

DataView® graphing, analysis and reporting software

d c (+, — or auto polarity)

d c , 1.9A output or 12 Vd c vehicle power

Technical Assistance (800) 343-1391 www.aemc.com 3

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