4-Wire Earth Ground Resistance Tester Kit
Includes all hardware necessary to measure earth ground
In 4 ranges from 2 to 2000Ω
Features:
•
4-wire, 3-wire, and 2-wire testing
•
Large dual line LCD
•
Autoranging
•
Automatic I (current) spike check
•
Automatic P (potential) spike check
•
Test Hold function for easy operation
•
Automatic Zero adjustment
•
AC Earth Voltage
•
Data Hold and Auto Power off
•
Overrange and low battery indication
Complete with test leads with alligator clips, 4 auxiliary earth bars, hard carrying
case, and eight 1.5V AA batteries
Specifications
Earth Ground Resistance ranges
Basic Accuracy
Resolution
Test Current / Frequency
AC Earth Voltage / Frequency
Accuracy
Power supply
Dimensions
Weight
2Ω/20Ω/ 200Ω/2000Ω
±(2%rdg+3d)
0.01Ω/ 0.1Ω/1Ω/0.01kΩ
<2mA / 820Hz
0 to 300VAC / 40 to 500Hz
±(2%rdg+3d)
Eight 1.5V ‘AA’ Batteries
9.8 x 7.8 x 4.3" (250 x 190 x 110mm)
3.15lbs (1430g) (batteries included)
Ordering Information:
GRT300
..............4-Wire Earth Ground Resistance Tester Kit
GRT300-NISTL*
..GRT300 with Certificate Traceable to NIST
382153................Replacement
Earth Bars (2pk)
382154................Replacement
Set of Leads
*
Limited NIST for Certificate of Traceability to 4-wire mode only
www.extech.com
Specifications subject to change without notice.
6/16/11 - R1
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