AEMC 4620 Earth Ground Tester,128 Hz,42VAC

AEMC 4620Range (Auto-ranging): 0
to 2000OResolution: 0.01 to 1OTest
Current: 0.1 to 10mAAccuracy
Typical: (2% Reading +1ct)Open
Voltage: 42V peakWithstanding
Voltage: 250V AC or 100V
DCOperating Frequency: 128Hz square waveGround Resistance Tester (Digital, 4-Point)The Digital Ground Resistance Tester Model 4630Kit performs ground resistance and soil resistivity tests. This direct reading testers measures from 0 to 2000O, and is auto-ranging, so it automatically seeks outs the optimum measurement range. The Model 4630Kit is rugged, easy-to-use, and is ideal for maintenance crews performing numerous tests. It exceeds mechanical and safety specifications for shock, vibration, and drop tests called out in IEC standards. It is designed to reject high levels of interference, so it can be used under difficult conditions such as high stray currents that normally affect accuracy. The Model 4630Kit is powered by 9.6V, 3.5 Ah NiMH rechargeable batteries. A built-in recharge circuit, powered from a 120/230V 50/60Hz line, also provides for testing while recharging. The large LCD (nearly 3/4' high characters) is easy-to-read, and also indicates low battery status, over-range, and test lead shorts and lead reversals. Three LED indicators on the front panel continuously warn the user of measurement problems to ensure accurate and reliable tests. Models 4620 and 4630 are fuse-protected up to 250VAC against accidental connection to live circuits.

In the event of a system fault, they can with- stand 250VAC with spikes of 3000VAC or 1000VDC. The heavy-duty field case is sealed against dust and water when closed. The meter itself is self-contained within an inner case providing additional environmental and insulation protection. The test button is also sealed against the elements. The Model 4620 is powered by eight, C cell batteries. The Model 4630 is powered by 9.6V, 3.5 Ah NiMH rechargeable batteries. A built-in recharge circuit, powered from a 1