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Ground Testers
 
 
 
 
 

Extech GRT300 4-Wire Earth Ground Resistance Tester

Extech GRT300
         
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4-WIRE EARTH GROUND RESISTANCE TESTER

Features

  • 4-wire, 3-wire, and 2-wire testing
  • Large dual line LCD
  • Automatic I (current) and P (potential) spike check
  • Test Hold function for easy operation
  • Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off
  • AC Earth Voltage
  • 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
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Sale: $799.00
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Product Name Type Display (3 Pole Testers) Ground Resistance Range Availability Price  
GRT300
GRT300
4-WIRE EARTH GROUND RESISTANCE TESTER
4 Pole Digital 2000 Ohms (2 K Ohms) Availability
in stock!
Edu Price Standard Price Gov't Price
GRT300-NISTL
GRT300-NISTL
4-WIRE EARTH GROUND RESISTANCE TESTER WITH LIMITED NIST
4 Pole Digital 2000 Ohms (2 K Ohms) Availability
in stock!
Edu Price Standard Price Gov't Price
GRT350
GRT350
4-WIRE EARTH GROUND RESISTANCE/RESISTIVITY TESTER
Availability
in stock!
Edu Price Standard Price Gov't Price
GRT350-NISTL
GRT350-NISTL
4-WIRE EARTH GROUND RESISTANCE/RESISTIVITY TESTER W/LTD NIST
Availability
in stock!
Edu Price Standard Price Gov't Price

Product Information

Extech GRT300 is a  4-Wire Earth Ground Resistance Tester Kit. It measure earth ground in 4 ranges from 2 to 2000 Ohm. This device has been designed and tested according to the IEC Publication 348, safety requirements fro Electronic Measuring Apparatus, EN 61010-01, EN 61326-1, EN 61557-5 and other safety standards.

Specifications

Earth Ground Resistance ranges 2Ω/20Ω/200Ω/2000Ω
Basic Accuracy ±(2% rdg + 3d)
Resolution 0.01Ω/0.1Ω/1Ω/0.01kΩ
Test Current/Frequency <2mA/820Hz
AC Earth Voltage/Frequency 0 to 300VAC/40 to 500Hz
Accuracy ±(2% rdg + 3d)
Power Supply Eight 1.5V 'AA' Batteries
Dimensions 9.8 x 7.8 x 4.3" (250 x 190 x 110mm)
Weight 3.15 lbs (1430g) (batteries included)

Extech GRT300 Product Specifications Summary:
(for full specs please see the full specs tab or the data sheet)

Ground Testers/3 Pole / 4 Pole Ground Testers Template

Type What's This?4 Pole
Display (3 Pole Testers) What's This?Digital
Ground Resistance Range What's This?2000 Ohms (2 K Ohms)
Operating Frequency What's This?820 Hz
Accuracy±(2%rdg+3d)
Measuring Current2 mA
Measuring Voltage What's This?300 V
Measuring Frequency What's This?820 Hz
Soil Resistivity What's This?No
Stakeless Capability What's This?No
CAT Rating What's This?IV
CAT Voltage What's This?300 V
Optional Ground Kit Included What's This?No
Auto Ranging What's This?Yes

Test Equipment General Attributes

Unique Features 4-wire, 3-wire, and 2-wire testing
Large dual line LCD
Automatic I (current) and P (potential) spike check
Test Hold function for easy operation
Autoranging, Automatic Zero adjustment, Data Hold and Auto Power off
AC Earth Voltage
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
Warranty1 YEARS
Calibration IncludedFactory Calibration
Power Supply VoltageBattery Powered
Safety ApprovalCE
Product Weight1430 GRAMS (3.15 LBS)
Battery TypeAA 
Product Height4.33 IN
Product Length9.84 IN 
Product Width7.5 IN
Country of OriginTaiwan

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