EXTECH 382357 Clamp On Ground Resistance Tester

Extech 382357 clamp-on ground resistance tester allows the user to measure ground resistance without the use of auxiliary ground rods. The Extech 382357 clamp-on ground resistance tester measures resistance from 0.03Ω to 1500Ω and True RMS AC Leakage current from 0.2mA to 30.00A.

Extech 382357 clamp-on ground resistance tester features programmable datalogging with 116 points, programmable hi/lo alarms, 0.9″ jaw size, self-calibration when powered on, and verification resistors to confirm the accuracy of the meter.

Extech 382357 clamp-on ground resistance tester ships complete with 9V battery, resistance check plate, and durable metal storage case.

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

Features :

Autoranging ground resistance measurements from 0.025Ohm to 1500Ohm with 0.002Ohm resolution
True RMS AC Leakage current range of 0.2mA to 30A with 1.000mA resolution
Programmable Datalogging with 116 data points
Programmable Hi/Lo Alarm
0.9″ (23mm) Jaw size for large ground rods

Specifications :

Resistance Test Frequency     1.667KHz (15mV rms approx.)
Max Conductor size     0.9” (23mm)
Display     4-digit (9999 count) display
Sampling rate     0.4 seconds
Power supply     One 9V battery
Power consumption     40mA
Temp. Coefficient     0.15 times the specified accuracy per degree centigrade (from 39 to 64°F (4 to 18°C) and 82 to 122°F (28 to 50°C))
Current Overload Protected     to 100A Continuous, 200A for less than 60 seconds (50/60Hz)
Continuity check     Audible tone if reading is less than approx. 40 Ω
Range selection     Automatic ranging
Safety     Meets the requirements for IEC1010-1 Category III 300V and Category II 600 V
Operating conditions     4 to 122°F (-20 to 50°C) with < 85% RH
Storage conditions     -20 to 140°F (-28 to 60°C) with < 75% RH
Dimensions     10.2 x 4.4 x 1.9” (258 x 110 x 47mm)
Weight     24.7oz (700g)
Accessories     Resistance check plate, 9V battery, carrying case