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Atec Biddle-DET3-2 User Manual

Page 3

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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

(50V output voltage)

Rc limit: 100k

(50V output voltage)

Limits reduced to 50k

for 25V output voltage

Limits reduced to 5k

for 0.01

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.