Atec AEMC-4620_4630 - Manual

Models 4620 & 4630 (pdf) 08/02
Technical Assistance (800) 343-1391 www.aemc.com 1 of 6
Digital Ground Resistance Tester
Models 4620 and 4630 perform ground
resistance and soil resistivity tests.
These direct reading testers measure
from 0 to 2000
Ω , and are auto-
ranging, so they automatically seek out
the optimum measurement range.
Easy-to-use — simply connect the
leads, Press-to-Measure and read
the results.
The large LCD (nearly 3 / 4 " high
characters) is easy-to-read, and also
indicates low battery status, overrange
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.
The Models 4620 and 4630 are fuse
protected up to >250V
AC against
accidental connection to live circuits.
In the event of a system fault, they can
withstand 250V
AC with spikes of
3000V AC or 1000V DC .
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
120/230V 50/60Hz line, also provides
for testing while recharging.
Both models will perform over 2000
15 second tests between recharging
(Model 4630) or battery replacement
(Model 4620).
The Ground Resistance Tester
Models 4620 and 4630 are rugged,
easy-to-use instruments ideal for
maintenance crews performing
numerous tests. Both models exceed
mechanical and safety specifications
for shock, vibration and drop tests
called out in IEC standards. They are
designed to reject high levels of inter-
ference, so they can be used under
difficult conditions such as high stray
currents that normally affect accuracy.
Digital Ground Resistance Tester
Models 4620 & 4630