DET4TCR2 Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – Digital Ground Testers

DET4TC2 & DET4TCR2
Digital Ground Testers
DET4TC2 & DET4TCR2
Digital Ground Testers
I IP54 rated
I 2, 3 and 4 point testing
I Attached Rod Technique (ART)
I Stakeless measurements
I User selectable test frequency
I Dry cell or rechargeable versions
I User selectable output voltage
I Simple one button operation
I Robust carry case
I Backlit display
I Delivered with calibration certificate
DESCRIPTION
Megger’s DET4 family of ground testing instruments offers
a comprehensive solution to your ground stake and soil
resistivity testing needs. The basic kit option comprises, the
instrument, test leads, stakes, batteries and calibration cer-
tificate are delivered in a tough carry case which has space
to accommodate all the instrument accessories - everything
you need to start testing in one kit.
The DET4TC2 and DET4TCR2 are designed for extended
temperature range use with an IP54 rated enclosure making
them genuinely outdoor instruments. The instrument
provides all the functions required for ground system
testing: variable frequency 2 pole, 3 pole, 4 pole, Attached
Rod Technique (ART), stakeless, leakage current and ground
noise voltage measurement.
The instrument is easy to use with a large rotary selector
switch and one-press test button, both of which permit
operation with gloved hands. Unlike some instruments, the
design negates the need for a shorting link when making
two pole measurements. There are no hidden functions
with the instrument: clearly labelled auxiliary controls are
used to select the test frequency (94 Hz, 105 Hz, 111 Hz and
128 Hz), output voltage (50 V or 25 V where local standards
apply) and to switch the backlight on or off.
The optional ICLAMP augments the traditional fall-of-
potential measurement method with ART (Attached Rod
Technique) which allows electrode testing without
disconnection and also leakage current measurements down
to 1 mA. A second optional clamp, the VCLAMP, enables
true stakeless measurements to be made in situations where
driving stakes is not practical.
The clear, easy-to-read display provides excellent contrast
and viewing angle making the instrument ideally suited
to outdoor use. The display is backlit, extending the
operational environment of the instrument to cable cellars
and other dark locations.
The instrument offers a wide measurement range of 0.01 Ω
to 200 kΩ, ground noise voltage measurement from 1 V to
100 V and ground current from 1 mA to 20 A. Accurate
results can be obtained in electrically noisy environments
since the instrument is capable of rejecting noise voltages
of 40 V peak to peak and the user can select different test
frequencies to minimise the effect of interference.
The DET4TC2 Digital Ground tester is powered from 8 AA
batteries which are widely available and deliver excellent
testing time. The DET4TCR2 is powered from rechargeable
AA cells. The battery charger is built in and the instrument is
supplied with an AC/DC adaptor. For both instruments, the
battery status is display using a bar-graph.
The Megger ground testers comply with stringent safety
standards and are rated to 100 V CAT IV. They also have
selectable 25 V or 50 V output for compliance with IEC
61557-5.