ERITECH® EST401 Ground Resistance Tester

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ERITECH EST401 Ground Resistance Tester data sheet
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ERITECH Clamp-on Ground Resistance Tester Model EST401 Instruction Manual

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ERITECH® EST401 Ground Resistance Tester

ERITECH® EST401 Ground Resistance Tester Print this page

The handheld ERITECH^® EST401 Ground Resistance Tester measures ground rod and small grid resistance in any season without the use of auxiliary ground rods. The tester can measure the resistance to ground, verify the quality of the grounding connections and bonds, and can measure the resistance and continuity of grounding loops around pads and buildings.

The ERITECH EST401 includes a current-measurement function. The probe’s high sensitivity enables measurement of current leakage flowing to ground or circulating in ground loops down to 1 mA and neutral currents to 30 Arms. A rugged Lexan^® body and a double-walled Lexan shell (or equivalent polycarbonate) to encase the probe heads, offers strength and durability. Overall construction and mechanical design ratings meet or exceed IEC^SM standards. The product has been designed to meet IEC 1010.

Battery life information is given at power-up and auto-off and a large LCD makes viewing resistance and current-measurement easy. The ERITECH EST401 is ideal for measuring ground current and ground resistance at pole ground rods, service entrances, pad-mounted transformers, transmission towers, service panels, phone pedestals and central office locations. Extended distances between installations, such as high-tension towers, will not adversely affect the measurement results.

Features

Offers fast and simple clamp-on operation
Requires no leads, auxiliary rods or spacing requirements
Provides a direct ground resistance reading of 0.1 to 1200 Ohms
Gives direct continuity and ground loop resistance readings
Offers direct ground leakage or phase current readings from 1 mA to 30 Arms
Accommodates 1000 MCM cables (1.25”/32 mm window) with its expansive jaw design
Has power management with auto-off
Resists breakage with durable head and body construction
Is designed to EN 61010-1, Cat III safety standards
Includes carrying case, user’s manual, battery and calibration loop

Applications

Measure ground rod and small grid resistance in any season without the use of auxiliary ground rods.

More Information

Ground
Resistance Measurement
Range Resolution Accuracy
(% of Reading)
Auto-Ranging
0.01 to 1200 Ohm 0.1 to 1.0 Ohm 0.01 Ohm ± (2.0% ± 0.02Ω)
1.0 to 50.0 Ohm 0.1 Ohm ± (1.5% ± 0.02Ω)
50.0 to 100 Ohm 0.5 Ohm ± (2.0% ± 0.05Ω)
100 to 200 Ohm 1 Ohm ± (3.0% ± 1.0Ω)
200 to 400 Ohm 5 Ohm ± (6.0% ± 5.0Ω)
400 to 600 Ohm 10 Ohm ± (10.0% ± 10.0Ω)
600 to 1200 Ohm 50 Ohm Not Rated
Current
Measurement 1 to 299mA 1mA ± (2.5% + 2μA)
Auto-Ranging
0.300 to 2.999A .001A ± (2.5% + 2μA)
1mA to 30.0Arms
3.00 to 29.99A .01A ± (2.5% + 20μA)
Resistance
Measurement
Frequency 2403Hz

Current
Measurement
Frequency 47 to 800Hz

Current Overload OL displayed
above 29.99Arms

Power Source 9V Alkaline battery

Battery life: 8 Hrs or
approx.1000 measurements
of 30 seconds

Functions
Ohms Range	X
Arms Range	X
Hold Function	X
Self test	X
Auto-Off	X
Battery Life Indicator	X
Noise Indicator	X
Open Jaw Indicator	X
Multi-Tone Beeper	X

IEC is a registered service mark of Indepedent Electrical Contractors, Inc.
Lexan is a registered trademark of the General Electric Company.

Due to a policy of continued product development, specifications are subject to change without notice.

CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH, and LENTON are registered trademarks of ERICO International Corporation.

Warning, Warranty and Limitation of Liability

WARNING
ERICO products shall be installed and used only as indicated in ERICO's product instruction sheets and training materials. Instruction sheets are available at www.erico.com and from your ERICO customer service representative. Improper installation, misuse, misapplication or other failure to completely follow ERICO's instructions and warnings may cause product malfunction, property damage, serious bodily injury and death.

WARRANTY
ERICO products are warranted to be free from defects in material and workmanship at the time of shipment. NO OTHER WARRANTY, WHETHER EXPRESS OR IMPLIED (INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE), SHALL EXIST IN CONNECTION WITH THE SALE OR USE OF ANY ERICO PRODUCTS. Claims for errors, shortages, defects or nonconformities ascertainable upon inspection must be made in writing within 5 days after Buyer's receipt of products. All other claims must be made in writing to ERICO within 6 months from the date of shipment or transport. Products claimed to be nonconforming or defective must, upon ERICO's prior written approval in accordance with its standard terms and procedures governing returns, promptly be returned to ERICO for inspection. Claims not made as provided above and within the applicable time period will be barred. ERICO shall in no event be responsible if the products have not been stored or used in accordance with its specifications and recommended procedures. ERICO will, at its option, either repair or replace nonconforming or defective products for which it is responsible or return the purchase price to the Buyer. THE FOREGOING STATES BUYER'S EXCLUSIVE REMEDY FOR ANY BREACH OF ERICO WARRANTY AND FOR ANY CLAIM, WHETHER SOUNDING IN CONTRACT, TORT OR NEGLIGENCE, FOR LOSS OR INJURY CAUSED BY THE SALE OR USE OF ANY PRODUCT.

LIMITATION OF LIABILITY
ERICO excludes all liability except such liability that is directly attributable to the willful or gross negligence of ERICO's employees. Should ERICO be held liable its liability shall in no event exceed the total purchase price under the contract. ERICO SHALL IN NO EVENT BE RESPONSIBLE FOR ANY LOSS OF BUSINESS OR PROFITS, DOWNTIME OR DELAY, LABOR, REPAIR OR MATERIAL COSTS OR ANY SIMILAR OR DISSIMILAR CONSEQUENTIAL LOSS OR DAMAGE INCURRED BY BUYER.