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AEMC 3620 2114.90 3-Point Analog Ground Resistance Tester Instruments
 
Product Information

3620 Datasheet 3620 Datasheet
  3620 Users Manual 3620 Users Manual
  Ground Resistance Calculator Ground Resistance Calculator
  Ground Resistance Testing Ground Resistance Testing
  Fall of Potential vs. Clamp On Fall of Potential vs. Clamp On
  Soil Resistivity Soil Resistivity
  Ground Comparison Chart Ground Comparison Chart

Your Price:
$765.88
Choose Options and Quantity
NIST Calibration NIST Calibration [+$94.00]
Accessories 25 Ohm calibration checker [+$54.88]
Quantity

AEMC 3620 2114.90 3-Point Analog Ground Resistance Tester

The AEMC 3620 Analog 3-Point Ground Resistance Tester performs ground resistance measurement from 0.5 to 1000 Ohms with unsurpassed accuracy and speed.

 

The 3620 features 3 terminal operation for fall of potential earth and ground resistance, and can be used for 2-Point tests as well. The large 3.1 inch logarithmic scale is very easy to read, and has a separate marking for 25 Ohms. A manual zero adjust is provided for accurate readings, and color coded terminals are easy to use with banana plug inputs and binding posts.

 

3620 Features

  • Fall of Potential method for 2 and 3-Point ground resistance testing
  • Direct reading on large analog display 0.5 to 1000 Ohms as well as easy 25 Ohm readings
  • Large 3.1 inch (77 millimeter) easy to read scale for accuracy
  • Built in battery check
  • 3 color coded terminals
  • Large press to measure buttons
  • Compact and portable
  • Easy to operate just connect, press, and read
  • Engineered to reject high levels of interference and noise

Applications
 

The 3620 is the perfect instrument for power utilities, electrical contractors, telephone and CATV technicians, REAs, and inspectors who need to check ground to determine compliance with OSHA, NEC, and other specifications.

  • Measuring earth resistance of the type of small ground grids or single rod usually found in remote telecommunication switching sites
  • Measuring ground electrode resistance of lightning protection equipment
  • Measuring the earth electrode resistances of equipment located in recreational areas
  • Testing electrode resistance of grids and ground rods at new construction sites, when utility supplied power has not been supplied
  • Testing earth electrode resistance of grounded towers at cellular phone remote installations

Specifications
Measurement Range
Range 0.5 to 1000 Watts
Measurement Range 25 Watts
Resolution 10 mW
Test Current 10 mA
Accuracy in % of Reading 5 + 0.1 percent of galvanometer scale length
Auxiliary Electrode Influence Rz: 3000 times the reading up to 50 kW, Ry: 50 kW
Accuracy Reference Conditions
23 degrees C ±3K, 50 percent RH ±10 percent, battery at 8 Volts ±0.2 Volts,
externa; magnetic field <40 A/m, external field <1 V/m, conductor centered,
loop resistance noninductive. Accuracy percent of reading
Resistance Measurement Frequency 128 Hertz square wave
Voltage Withstand 250 Volts rms with spikes of 3000 Volts AC or 1000 Volts DC
Power Source
Eight 1.5 Volt AA Alkaline batteries
Battery Life approximately 1680 fifteen-second tests
Fuse Protection High breaking capacity 0.1 Amps, 250 Volts, 0.25 x 1.25 inches
Mechanical Specifications
Display Analog pivot movement
Connection
Color-coded terminals accept spade lugs with minimum gap of 6 millimeters
or standard 4 millimeter banana jacks
Scale 3.1 inch (77 millimeter) white scale with black pointer; one scale per range
Operating Temperature 14 to 131 degrees F (-10 to 55 degres C)
Storage Temperature -40 to 158 degrees F (-40 to 70 degrees C), 0 to 90 percent RH with batteries removed
Temperature Influence 5 percent per 10 degrees C
Relative Humidity 20 to 90 percent maximum
Dimensions
8.7 x 5.4 x 5.9 inches
220 x 136 x 150 millimeters
Weight 2 pounds (1.3 kg)
Case Heavy-duty, ABS
Colors Case: safety yellow; Front panel: gray
Mechanical Shock IEC 68-2-27
Vibration Test IEC 68-2-6
Drop Test IEC 68-2-32
Environmental O-ring sealed against dust and water to IP50
Safety Reference Specifications
Safety Ratings IEC 1010-1 Cat III Pollution Degree 2, 24 Volts
Agency Approvals Emission: EN 50081-1; Immunity: EN 50082-1
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