382090 382091 V4.0 09/07
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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
(781) 890-7440 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.
Introduction
Congratulations on your purchase of the Extech 382090/382091 1000A 3-Phase Power
Analyzer Datalogger. Model 382090 is for use with 60Hz power systems. Model 382091
is for use with 50Hz power systems. This package includes four (4) clamp-on meters and
four (4) alligator clip leads that connect to the analyzer/datalogger. When the clamps and
test leads are connected to the circuit under test the user can view up to ten power
measurement displays. Also, up to 20,000 data sets can be automatically stored by the
analyzer/datalogger. Stored readings can later be transferred to a PC. Real-time logging
(readings recorded and transferred to PC at the same time) is also supported. Careful
use of these instruments will provide years of reliable service.
Features
• Ten display LCD screens capable of showing a multitude of power quality
parameters simultaneously
• Up to four current probes can be connected to the analyzer
• Measure single-phase 2-wire, single-phase 3-wire, three-phase 3-wire and three-
phase 4-wire systems
• True-RMS sensing for V, A, KW, KVAR, KVA, PF, θ, Hz, KWh, KVARh and KVAh
measurements
• Phase sequence indicator
• Backlit display
• Manual and Automatic Datalogging
• PC interface with 3-phase voltage/current waveform display & harmonic analysis
• Easy-to-use push-button operation
• Light weight and portable
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