 |
|
AEMC 3620 Analog Ground Resistance Tester
The AEMC Analog Ground Resistance Tester 3620 performs ground resistance measurements from 0.5 ohm to 1000 ohm with speed and accuracy.The 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 25 ohm. 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 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
- Fall-of-Potential method for 2- and 3-Point ground resistance tests
- Direct reading on large analog display 0.5 ohm to 1000 ohm and easy 25 ohm 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
Specifications
| Range |
0.5 ohm to 1000 ohm |
| Resolution |
10 mA |
| Test Current: |
10 mA |
| Resistance Measurement Frequency |
128 Hz square wave |
| Accuracy |
±5% of Reading + 0.1% of galvanometer scale length |
| Auxiliary Electrode Influence |
Rz 3000 times the reading up to 50 kohm Ry 50 kohm |
| Withstanding Voltage |
250 Vrms with spikes of 3000 VAC or 1000 VDC |
| 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" |
| 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 |
| Rating |
EN 61010-1, Cat. III, Pollution Degree 2, 24V |
| Agency Approval |
Emission: |
EN 50081-1 |
| Immunity: |
EN 50082-1 |
| CE Mark |
Yes |
|
