DET4TC2 [ETC]
Digital Ground Testers;
| 型号： | DET4TC2 |
| 厂家： | 
ETC |
| 描述： | Digital Ground Testers |
| 文件： | 总3页 (文件大小：259K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
true stakeless measurements to be made in situations where
driving stakes is not practical.
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 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 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 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 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 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.
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
DET4TC2 & DET4TCR2
Digital Ground Testers
Safety
SPECIFICATIONS
Complies with the requirements of IEC61010-1 100V CAT IV
between terminal pairs.
Ingress protection
IP54
EMC
C stake, P stake and Noise check
Automatic
In accordance with IEC61326-1
Standards Compliance
Complies with the requirements of KEMA K85B
Noise rejection
40 V pk to pk
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”.
2-wire, 3-wire, 4-wire test
Yes, no shorting links required
No disconnect testing (ART)
Yes, with ICLAMP
Part 1 - General requirements
Part 5 - Resistance to earth
Stakeless measurement
Yes, with ICLAMP and VCLAMP
Dimensions
203 mm x 148 mm x 78 mm (8in x 5.8in x 3in)
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
Weight
1kg (2.2lb)
Ground current range with clamp
0.5 mA to 19.9 A
Ground current accuracy
5% 3 digits
Ground voltage range
0 to 100 V ac
Ground voltage accuracy
2% 2 V
Resistance range
0.01 Ω to 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 kΩ for 25 V output voltage
Limits reduced to 5 kΩ for 0.01 Ω resolution
Display
31⁄
digit high contrast liquid crystal, backlit
2
Battery type
DET4TC2: 8 off AA (LR6) cells
DET4TCR2: 8 off AA (LR6) NiMH rechargeable cells
Operating temperature range
-15°C to +55°C / 5°F to 131°F
Storage temperature range
-40°C to +70°C / -40°F to 158°F
DET4TC2 & DET4TCR2
Digital Ground Testers
ORDERING INFORMATION
Item
Order Code.
1000-345
Item
Order Code.
5410-429
DET4TC2 Basic kit
Accessories
DET4TCR2 Basic kit (rechargeable)
“Basic kit” included Accessories
Hard carry case
1000-346
Replacement hard carry case
Replacement calibration check PCB
(two-clamp measurements)
6220-831
Stake and wire kit (15m, 10m, 10m, 3m)
External AC/DC charger (DET4TCR2 only)
Replacement ground test stakes (x2)
for included kit (200mm, 8mm dia)
Replacement ground test leads (x4)
for included kit (15m, 10m, 10m, 3m)
Replacement auger stake
6220-804
6220-806
6220-839
1000-349
1000-350
1000-362
1000-361
DET4TC2 + adaptors
1000-402
1000-403
DET4TCR2 + adaptors (rechargeable)
“+ adaptors” included Accessories
Hard carry case
for professional kit
Replacement cable reel (50m, red cable)
for professional kit
Right angle terminal adaptors
(to connect bare wires to terminals)
External AC/DC charger (DET4TCR2 only)
Replacement cable reel (50m, black cable)
for professional kit
Replacement cable reel (30m, green cable)
for professional kit
Kitted options for ART and Stakeless testing
DET4TC2 + clamps
1000-365
1000-366
Replacement cable reel (30m, yellow cable)
for professional kit
DET4TCR2 + clamps (rechargeable)
“+ clamps” included Accessories
Hard carry case
Replacement external AC/DC adaptor
(DET4TCR2 only)
6280-370
ICLAMP
Stake and wire kit (15m, 10m, 10m, 3m)
ICLAMP (for ART testing)
Current clamp and connecting lead
Calibration check box (25 Ohm)
Right angle terminal adaptor set
Black crocodile clip (1)
6220-824
6220-803
6220-850
VCLAMP (adds stakeless testing)
Field calibration check for instrument and CLAMPS
Right angle terminal adaptors (to connect bare wires
to terminals)
Professional groung testing kit (2 x 50m, 2 x 30,
4 auger stakes, tape measure, in hard carry case
Vehicle 12 V socket charger (DET4TCR2 only)
“Getting down to earth”
6320-245
6220-375
External AC/DC charger (DET4TCR2 only)
Professional kitted options for ART and Stakeless testing
Megger guide to earth ground testing
21500-072
DET4TC2 + kit
1000-404
1000-405
DET4TCR2 + kit (rechargeable)
“+ 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,
2 x 30m, 4 auger stakes, tape measure, in hard carry case
Registered to ISO 9001:2000 Cert. no. Q 09290
Registered to ISO 14001-1996 Cert. no. EMS 61597
UK
UNITED STATES
4271 Bronze Way
Dallas TX 75237-1088 USA
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
Archcliffe Road Dover
CT17 9EN England
DET4TC2_4TCR2_DS_en_V04
T
F
+44 (0) 1304 502101
+44 (0) 1304 207342
T
T
F
800 723 2861 (USA only)
+1 214 333 3201
+1 214 331 7399
www.megger.com
Megger is a registered trademark
E UKsales@megger.com
E USsales@megger.com
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