The new ground testing instrument family
from Megger offers a unique solution to your ground rod testing
needs. The complete kit of instrument, test leads, stakes and
batteries are delivered in a tough polypropylene carry case -
everything you need to start testing in one kit.
The ground tester is rated to IP54 making it truly an outdoor
instrument. The ground tester has been designed to be easy to
use - a large selector switch makes selection of 2 and 3 pole
test easy with gloved hands - and the design
makes the fitting of shorting links to perform 2 pole tests a
thing of the past. A large, clear, easy to read Analog display
and thumb sized test button again makes the instrument particularly
suited to the outdoor conditions of
ground testing.
In addition to this ease of use, the ground tester also allows
you to check the connection and condition of the P and C spike,
indicating the status on the instrument. The instrument also includes
a voltmeter to allow you to measure the ground voltage. The ground
tester can measure resistance from 0.01 ½ through to 2000
½ and earth voltages up to 100 V. To allow testing in noisy
environments the instrument is capable of rejecting noise of up
to 40 V peak to peak.
The Megger Analog ground tester is powered by eight AA batteries
which are widely available and also give excellent testing time
- the status of these batteries is indicated on the Analog display
by selecting the function on the selector switch - allowing yo
to decide when to change the batteries,
before they expire.
The Megger ground testers are designed to meet stringent safety
standards and are rated CAT IV 100 V.
Ground testing using the ART method is more convenient and reduces testing time. Model DET3TC includes the additional testing capability called the ART (Attached Rod Technique) method. A nagging problem with traditional ground testing has been the requirement to disconnect the utility connection. Using the ART method you can reliably measure a grounding electrode while still connected and prove it!
How it works
A current clamp, connected below the point of separation of the parallel test currents, measures only the current flowing through the test ground, not that going back through the utility. This current value is then used by the built-in microprocessor to calculate ground resistance, strictly in accordance with Fall of Potential and supported by IEEE Standard 81.
That’s why using the ART ground testing method is more convenient and significantly reduces your testing time as much as 40%!
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