Atec Biddle-DET3-2 User Manual
Page 3
DET3 Contractor Series
Earth/Ground Resistance Testers
SPECIFICATIONS
Resistance range: 0.01 to 2000 autoranging
Resistance accuracy:
2P measurements
2% ±3 digits
3P measurements
2% ±3 digits
ART measurements 5% ±3 digits
Maximum probe resistance
Rp limit: 100k
Ω
(50V output voltage)
Rc limit: 100k
Ω
(50V output voltage)
Limits reduced to 50k
Ω
for 25V output voltage
Limits reduced to 5k
Ω
for 0.01
Ω
resolution
Earth voltage range: 0 – 100 V
Earth voltage accuracy: 2% ±2 V
2- and 3-wire test: Yes
ART (Attached Rod Technique): DET3TC
Ground current range (with current measuring clamp):
0.5 mA to 19.9 A
Ground current accuracy: 5% ±3 digits
Display: LCD
Test frequency: 128 Hz
Test voltage: 25 V or 50 V, user selectable (factory setting 50 V)
Test current: 450 micro-amps
Noise rejection: 40V pk to pk
Noise check: Automatic
C spike check: Automatic
P spike check: Automatic
Maximum current loop resistance: 100 k-ohms at 50V,
50 k-ohms at 25 V and 5 k-ohms for 0.01 ohm resolution for
readings below 19 ohms
Maximum voltage probe resistance: 100 k-ohms at 50V,
50 k-ohms at 25 V and 5 k-ohms for 0.01 ohm resolution for
readings below 19 ohms
Battery type: 8 1.5 V AA cells
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
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)
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
Each instrument comes complete with three leads, two test spikes,
instruction manual CD, and a rugged carrying case, (current measuring
clamp, shown, is an optional accessory for performing the ART testing
capability using the DET3TC.)
Terminal Adapters are
optional accessories used
to allow the units’ terminals
to accept alternative cable
connections.