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AEMC 3620 Analog Ground Resistance Tester
The AEMC Analog Ground Resistance
Tester Model 3620 performs ground resistance measurements from 0.5 to 1000Ω with speed
and accuracy.The AEMC 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. A large
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 AEMC 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.
Features:
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Fall-of-Potential
method for 2- and 3-Point ground resistance tests
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Direct
reading on large analog display 0.5 to 1000Ω and easy 25Ω readings
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Large
3.1" (77mm), easy-to-read scale for accurate readings
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Built-in
battery check
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Three
color-coded terminals
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Large
Press-to-Measure button
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Portable
and compact
-
Extremely
simple to operate: connect ‚ press ‚ read
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Designed
to reject high levels of noise and interference
Applications:
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Measuring
earth resistance of the type of single rod or small ground grids often found in remote
telecommunication switching sites
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Measuring
ground electrode resistance of lightning protection equipment
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Measuring
the earth electrode resistance of equipment in recreational areas
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Testing
electrode resistance of ground rods and grids at new construction sites, when
utility supplied power has not been supplied
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Testing
earth electrode resistance of grounded towers at cellular phone remote installations
| Specifications: |
| Electrical |
| Range |
0.5
to 1000Ω |
| Resolution |
10mΩ |
| Test
Current |
10mA |
Resistance Measurement Frequency |
128Hz
square wave |
| Accuracy |
±5%
of Reading + 0.1% of galvanometer scale length |
| Auxiliary
Electrode Influence |
Rz
3000 times the reading up to 50kΩ Ry 50kΩ |
| Withstanding
Voltage |
250Vrms
with spikes of 3000VAC or 1000VDC |
| Power
Source |
Eight
1.5V ‚AA‚ Alkaline batteries |
| Battery
Life |
1680
15-second tests (approximately) |
| Fuse
Protection |
High
breaking capacity 0.1A, >250V, 0.25 x 1.25" |
| Mechanical |
| Display |
Analog
Pivot movement |
| Connection |
Color-coded terminals accept spade
lugs with minimum gap of 6mm or standard 4mm banana jacks |
| Scale |
3.1"
(77mm) white scale with black pointer; one scale per range |
| Operating
Temperature |
14°
to 131°F (-10° to 55°C) |
| Storage
Temperature |
-40°
to 158°F (-40° to 70°C), 0 to 90% RH with batteries removed |
| Temperature
Influence |
5%
per 10°C |
| Relative
Humidity |
20
to 90% maximum |
| 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 |
| Rating |
EN
61010-1, Cat. III, Pollution Degree 2, 24V |
| Agency
Approval |
Emission: EN 50081-1
Immunity: EN 50082-1 |
| CE
Mark |
Yes |
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