Extech 382357 Specifications
Features:
• Ground resistance measurements down to 0.025Ω
with 0.002Ω maximum resolution
• True RMS AC Leakage current range of 0.2mA to 30A
with 1.000mA maximum resolution
• Programmable Datalogging with 116 data points
• Programmable Hi/Lo Alarm
• 0.9˝ Jaw Size for Large Ground Rods
• Simplifies ground resistance measurements
on multiple point ground systems
• Verification resistors confirm accuracy of meter
• Automatic Self Calibration when powered on
• 9999 Count High Contrast LCD Display
• Electrical Noise Detection feature prevents inaccurate readings
• Data Hold and Continuity Beeper
• Complete with 9V battery, Resistance check plate and carrying case
Clamp-On Ground Resistance Tester
Enables non-contact measurements of ground conductors without need for auxiliary ground spikes
Specifications Range Resolution Accuracy (%rdg)
Ground Resistance: 0.025 to 0.25Ω 0.002Ω ±(1.5% + 0.05Ω)
0.250 to 1.000Ω 0.02Ω ±(1.5% + 0.05Ω)
1.001 to 9.999Ω 0.02Ω ±(1.5% + 0.1Ω)
10.00 to 50.00Ω 0.04Ω ±(1.5% + 0.1Ω)
50.01 to 99.99Ω 0.04Ω ±(1.5% + 0.5Ω)
100.0 to 200.0Ω 0.4Ω ±(1.5% + 0.5Ω)
200.1 to 400.0Ω 2Ω ±(5.0% + 5Ω)
400.0 to 600.0Ω 5Ω ±(10% + 10Ω)
600.1 to 1500Ω 20Ω ±20%
AC Leakage Current (Trms): 0.200 to 1.000mA 0.001mA ±(2.0% ± 0.05mA)
1.00 to 10.00mA 0.01mA ±(2.0% ± 0.03mA)
10.0 to 100.0mA 0.1mA ±(2.0% ± 0.3mA)
100 to 1000mA 0.1mA ±(2.0% ± 0.3mA)
0.20 to 4.00A 0.01A ±(2.0% ± 0.03A)
4.00 to 30.00A 0.01A ±(3.0% ± 0.03A)
Resistance Test Frequency: 1.667kHz
Continuity: Beep if less than 40Ω (approximately)
Dimensions: 10.2 x 4.4 x 1.9" (258 x 110 x 47mm)
Weight: 24.7oz (700g)
Applications:
• Verify resistance of cellular and
communication tower ground grids
• Check utility transmission
systems and grounding rods
• Maintenance on electric transportation systems
• Ideal for grounding systems in sub-stations,
factories and office buildings
CAT III-300V,
CAT II-600V
Product DATASHEET
EXTECH INSTRUMENTS CORPORATION
285 Bear Hill Road, Waltham, MA 02451-1064, U.S.A.
Phone: 781-890-7440 • FAX 781-890-7864
ISO 9001:2000 CERTIFIED
Ordering Information:
382357 ............Clamp-On Ground Resistance Tester
Copyright © 2007 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
“Make mine an Extech!™”
www.extech.com
02/27/07 - R2
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