Extech 382152 Operating Manual

User's Manual

Earth Ground Resistance Tester
Model 382152

Introduction

Congratulations on your purchase of the Extech Earth Ground Resistance Tester. This
device can measure resistance (in 3 ranges) and AC voltage to 200V. 2mA constant
current test signal permits earth resistance tests without tripping current breakers in the
circuit under test. Single, momentary tests or automatic 3-minute tests can be selected.
This device was designed to meet IEC-1010 (EN 61010) safety standards.
Earth Ground Resistance Testers are useful for:

• Estimating ground resistance of a proposed substation or transmission tower.

• Computing inductive coupling between neighboring power and communication

circuits.

• Designing cathode protection systems.

• Geological surveys.

Careful use of this meter will provide years of reliable service.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects

in parts and workmanship for one year from date of shipment (a six month limited warranty
applies to sensors and cables). If it should become necessary to return the instrument for
service during or beyond the warranty period, contact the Customer Service Department at
[phone] ext. 210 for authorization or visit our website www.extech.com for contact
information. A Return Authorization (RA) number must be issued before any product is
returned to Extech. The sender is responsible for shipping charges, freight, insurance and
proper packaging to prevent damage in transit. This warranty does not apply to defects
resulting from action of the user such as misuse, improper wiring, operation outside of
specification, improper maintenance or repair, or unauthorized modification. Extech
specifically disclaims any implied warranties or merchantability or fitness for a specific
purpose and will not be liable for any direct, indirect, incidental or consequential damages.
Extech's total liability is limited to repair or replacement of the product. The warranty set
forth above is inclusive and no other warranty, whether written or oral, is expressed or
implied.

Safety

Please read the following safety information carefully before attempting to operate the
meter and use the meter only as specified in this manual.

Environmental safety information

• Do not use meter outdoors when precipitation is likely

• Installation Category III

• Pollution degree 2

• Altitude: 2000 meters max.

• Ambient conditions: 32 to 104

• Observe the following international safety warning symbols

Safety Symbols

Caution: Refer to this manual before using this meter

Dangerous Voltages

o

F (0 to 40oC); RH: 80% max

Meter is protected throughout by double or reinforced insulation

Organizations that provide rules and guidelines for proper grounding

• The National Electrical Code (NEC)

• Underwriters Laboratories (UL)

• National Fire Protection Association (NFPA)

• American National Standards Institute (ANSI)

• Occupational Safety Health Administration (OSHA)

• Telecommunications Industry Standard (TIA)

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Model 382152 Ver. 2.0 11/06