DET4TC2 & DET4TCR2
Digital Ground Testers
DESCRIPTION
Megger’s DET4 family of ground testing instruments offers
acomprehensive solution to your ground stakeand 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 rotaryselector
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.
nIP54 rated
n2, 3 and 4 point testing
nAttached Rod Technique (ART)
nStakeless measurements
nUser selectable test frequency
nDry cell or rechargeable versions
nUser selectable output voltage
nSimple one button operation
nRobust carry case
nBacklit display
nDelivered with calibration certificate
DET4TC2 & DET4TCR2
Digital Ground Testers
DET4TC2 & DET4TCR2
Digital Ground Testers
SPECIFICATIONS
Ingress protection
IP54
Cstake, P stake and Noise check
Automatic
Noise rejection
40 V pk to pk
2-wire, 3-wire, 4-wire test
Yes, no shorting links required
No disconnect testing (ART)
Yes, with ICLAMP
Stakeless measurement
Yes, with ICLAMP and VCLAMP
Instrument output
Voltage: ±25 V or ±50 V at 94 Hz, 105 Hz, 111 Hz and 128 Hz
Current: 4.5 mA or 0.45 mA or 0.045 mA
Ground current range with clamp
0.5 mA to 19.9 A
Ground current accuracy
5% ±3digits
Ground voltage range
0to 100 V ac
Ground voltage accuracy
2% ±2 V
Resistance range
0.01 Ωto 200 kΩ
Resistance accuracy
2P measurements: 2% ±3 digits
3P measurements: 2% ±3 digits
4P measurements: 2% ±3 digits
ART measurements: 5% ±3 digits
Stakeless measurements: 7% ±3 digits
Maximum probe resistance
Rp limit: 200 kΩ(50 V output voltage)
Rc limit: 200 kΩ(50 V output voltage)
Limits reduced to 100 kΩfor 25 V output voltage
Limits reduced to 5 kΩfor 0.01 Ωresolution
Display
31⁄2digit high contrast liquid crystal, backlit
Battery type
DET4TC2: 8off AA (LR6) cells
DET4TCR2: 8off AA (LR6) NiMH rechargeable cells
Operating temperaturerange
-15°C to +55°C / 5°F to 131°F
Storage temperature range
-40°C to +70°C / -40°F to 158°F
Safety
Complies with the requirements of IEC61010-1 100V CAT IV
between terminal pairs.
EMC
In accordance with IEC61326-1
Standards Compliance
Complies with the requirements of KEMA K85B
Complies with the following parts of EN61557, “Electrical safety in
low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. -
Equipment for testing, measuring or monitoring of protective
measures”.
Part 1 - General requirements
Part 5 - Resistance to earth
Dimensions
203 mm x 148 mm x 78 mm (8in x 5.8in x 3in)
Weight
1kg (2.2lb)
DET4TC2 & DET4TCR2
Digital Ground Testers
ORDERING INFORMATION
Item Order Code.
DET4TC2 Basic kit 1000-345
DET4TCR2 Basic kit (rechargeable) 1000-346
“Basic kit” included Accessories
Hard carry case
Stake and wire kit (15m, 10m, 10m, 3m)
External AC/DC charger (DET4TCR2 only)
DET4TC2 + adaptors 1000-402
DET4TCR2 + adaptors (rechargeable) 1000-403
“+ adaptors” included Accessories
Hard carry case
Right angle terminal adaptors
(to connect bare wires to terminals)
External AC/DC charger (DET4TCR2 only)
Kitted options for ARTand Stakeless testing
DET4TC2 + clamps 1000-365
DET4TCR2 + clamps (rechargeable) 1000-366
“+ clamps” included Accessories
Hardcarrycase
Stake and wire kit (15m, 10m, 10m, 3m)
ICLAMP (for ARTtesting)
VCLAMP (adds stakeless testing)
Field calibration check for instrument and CLAMPS
Right angle terminal adaptors (to connect barewires
to terminals)
External AC/DC charger (DET4TCR2 only)
Professional kitted options for ARTand Stakeless testing
DET4TC2 + kit 1000-404
DET4TCR2 + kit (rechargeable) 1000-405
“+ kit” included Accessories
Hard carry case
Stake and wire kit (15m, 10m, 10m, 3m)
ICLAMP (for ART testing)
VCLAMP (adds stakeless testing)
Field calibration check for instrument and CLAMPS
Right angle terminal adaptors (to connect bare wires
to terminals)
External AC/DC charger (DET4TCR2 only)
Separate professional ground testing kit (2 x 50m,
2x30m, 4 auger stakes, tape measure, in hard carry case
Item Order Code.
Accessories
Replacement hard carry case 5410-429
Replacement calibration check PCB
(two-clamp measurements) 6220-831
Replacement ground test stakes (x2)
for included kit (200mm, 8mm dia) 6220-804
Replacement ground test leads (x4)
for included kit (15m, 10m, 10m, 3m) 6220-806
Replacement auger stake
for professional kit 6220-839
Replacement cable reel (50m, red cable)
for professional kit 1000-349
Replacement cable reel (50m, black cable)
for professional kit 1000-350
Replacement cable reel (30m, green cable)
for professional kit 1000-362
Replacement cable reel (30m, yellow cable)
for professional kit 1000-361
Replacement external AC/DC adaptor
(DET4TCR2 only) 6280-370
Current clamp and connecting lead ICLAMP
Calibration check box (25 Ohm) 6220-824
Right angle terminal adaptor set 6220-803
Black crocodile clip (1) 6220-850
Professional groung testing kit (2 x 50m, 2 x 30,
4auger stakes, tape measure, in hardcarry case 6320-245
Vehicle 12 V socket charger (DET4TCR2 only) 6220-375
“Getting down to earth”
Megger guide to earth ground testing 21500-072
UK
Archcliffe Road Dover
CT17 9EN England
T+44 (0) 1304 502101
F+44 (0) 1304 207342
EUKsales@megger.com
UNITED STATES
4271 Bronze Way
Dallas TX 75237-1088 USA
T800 723 2861 (USA only)
T+1 214 333 3201
F +1 214 331 7399
EUSsales@megger.com
OTHER TECHNICAL SALES OFFICES
Norristown USA, Sydney AUSTRALIA,
Toronto CANADA, Trappes FRANCE,
Kingdom of BAHRAIN, Mumbai INDIA,
Johannesburg SOUTH AFRICA, Conjure
THAILAND and Täby SWEDEN
Registered to ISO 9001:2000 Cert. no. Q 09290
Registered to ISO 14001-1996 Cert. no. EMS 61597
DET4TC2_4TCR2_DS_en_V04
www.megger.com
Megger is a registered trademark
