Megger’s DET4TD2 1000-347 4 Terminal Ground Resistance Tester is designed for simple operation and outdoor use. The tester measures resistance from 0.01 Ω to 20k Ω and rejects noise up to 40V peak to peak. The dry-cell battery powered DET4TD2 1000-347 boasts a large selector switch allowing users to easily choose between 2, 3 or 4 pole tests – even with gloved hands. The vast, clear LCD and thumb-sized test button render the unit well suited for outdoor conditions.
The DET4TD2 1000-347 automatically confirms the connection and conditions of the P spike, C spike in addition to the level of ground noise, showing the status on the display. Even more, a voltmeter is included to enable measurement of ground voltage and the DET4TD2 1000-347 is rated to IP54 and CAT IV 100 V.
Specifications
Resistance range:
0.01 to 200 kΩ autoranging (0.01 to 20kΩ for models DET4TD2 and DET4TR2)
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:
DET4TD2 and DET4TR2
Rp limit: 100kΩ (50V output voltage) Rc limit: 100kΩ (50V output voltage) Limits reduced to 50kΩ for 25V output voltage Limits reduced to 5kΩ for 0.01 Ω resolution
DET4TC2 and DET4TCR2
Rp limit: 200kΩ (50V output voltage) Rc limit: 200kΩ (50V output voltage) Limits reduced to 100kΩ for 25V output voltage Limits reduced to 5kΩ for 0.01 Ω resolution
Earth voltage range:
0 – 100 V
Earth voltage accuracy:
2% ±2 V
2-wire test:
Yes, all models
3-wire test:
Yes, all models
4-wire test:
Yes, all models
ART (Attached Rod Technique):
DET4TC2, DET4TCR2
Stakeless test:
DET4TC2 and DET4TCR2
Ground current range (with current measuring clamp):
0.5 mA to 19.9 A
Ground current accuracy:
5% ±3 digits
Display: DET4TD2 and DET4TR2: 3-1/2 digit high contrast LCD DET4TC2 and DET4TCR2: 3-1/2 digit high contrast LCD, backlit
Test frequency:
94, 105, 111 and 128 Hz (128 Hz for DET4TD2 and DET4TR2)
Test voltage:
25 V or 50 V, user selectable (factory setting 50 V)
Test current:
450 micro-amps at 25 V or 50 V (selectable), 4.5 mA at 25 V
Noise rejection:
40V pk to pk
Noise check:
Automatic
C spike check:
Automatic
P spike check:
Automatic
Battery type:
8 1.5 V AA cells (8 1.5 V AA NiMH rechargeable cells – DET4TR2 and DET4TCR2)
Battery life:
3 hours, 700 consecutive tests
Safety:
EN61010-1 CAT IV 100 V
Terminals:
4 mm plug type (test leads)
Ingress protection:
IP54
EMC:
Meets the requirements of EN61326-1:1998 for use in heavy industrial areas, including amendment 1
Dimensions:
8 x 5.7 x 3.2 in. (203 x 148 x 78 mm)
Weight:
2.2 lb (1 kg)
Operating temperature range:
5º to +131º F (-15º to +55º C)
Storage temperature range:
-40º to +158º F (-40º to +70º C)
Humidity:
95% RH non-condensing at 104º F (40º C)
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