
Models 3620 & 3620 Kit (pdf)
Rev. 02
03/05
Technical Assistance (800) 343-1391 www.aemc.com 1 of 6
The Analog Ground Resistance Tester
Model 3620 performs ground resistance
measurements from 0.5 to 1000Ω with
speed and accuracy.
The Model 3620 features three-terminal
operation for Fall-of-Potential earth/
ground resistance and also may be
used for 2-Point tests.
The large 3.1" logarithmic analog scale
is easy to read, with a separate marking for 25Ω.Alarge Press-to-Measure
button allows for easy measurements.
A manual zero adjust is provided for
accurate readings. Color-coded
binding post terminals are easy-to-use
with banana plug and spade lug inputs.
The heavy duty ABS case is O-ring
sealed against dust and water, and the
Press-to-Measure button is also sealed.
The Ground Tester Model 3620 is
battery powered, for convenient use in
remote field applications. Mechanical
and safety specifications, such as
vibration and drop test, meet or exceed
IEC standards, to ensure safe and
reliable field use.
The Ground Resistance Tester Model
3620 is the ideal instrument for electrical
contractors, power utilities, REAs,
telephone and CATV technicians, and
inspectors who must check ground to
determine compliance with NEC
®
,
OSHA and other specifications.
The Model 3620 is also available in
a complete kit form, which includes
meter, 16 ft lead, two 150 ft leads on
spools with wind-up handles to reduce
lead tangling and two auxiliary ground
electrodes packaged in a high-impact
molded hard carrying case.
Ground Resistance Tester
Model 3620 & 3620 Kit
Model 3620 Kit (optional)
Catalog #2114.91

Models 3620 & 3620 Kit (pdf)
Rev. 02
03/05
Technical Assistance (800) 343-1391 www.aemc.com 2 of 6
Model 3620 shown in
standard soft carrying case
Catalog #2114.90
Features
• Fall-of-Potential method for 2- and
3-Point ground resistance tests
• Direct reading on large analog
display 0.5 to 1000Ω and easy
25Ω readings
• Large 3.1" (77mm), easy-to-read
scale for accurate readings
• Built-in battery check
• Three color-coded terminals
• Large Press-to-Measure button
• Portable and compact
• Extremely simple to operate:
connect – press – read
• Designed to reject high levels
of noise and interference
Applications
• Measuring earth resistance of the
type of single rod or small ground
grids often found in remote
telecommunication switching sites
• Measuring ground electrode
resistance of lightning protection
equipment
• Measuring the earth electrode
resistance of equipment in
recreational areas
• Testing electrode resistance
of ground rods and grids at
new construction sites, when
utility supplied power has not
been supplied
• Testing earth electrode resistance
of grounded towers at cellular
phone remote installations