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User Guide
Model 380363
Insulation Tester / Megohmmeter
Introduction
Congratulations on your purchase of Extech's Insulation Tester/Megohmmeter. The Model
380363 provides three test ranges plus continuity and AC/DC voltage measurement. Manual
datalogging stores up to 9 data sets. This professional meter, with proper care, will provide
years of reliable service.
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Table of Contents
Related Manuals for Extech Instruments 380363
Summary of Contents for Extech Instruments 380363
- Page 1 Introduction Congratulations on your purchase of Extech’s Insulation Tester/Megohmmeter. The Model 380363 provides three test ranges plus continuity and AC/DC voltage measurement. Manual datalogging stores up to 9 data sets. This professional meter, with proper care, will provide years of reliable service.
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Page 2: Specifications
9.3 x 4.6 x 2.1” (235 x 116 x 54mm) Weight 1.15 lbs (520g) Safety ratings Pollution degree 2; indoor use; CE marked; Meets IEC 61010-1 and IEC 61557 standards Category Rating CAT III-1000V Model 380363 Version 2.0 July 2005... - Page 3 Max. open circuit Overload Volt Protect. ±1% + 3d 1000Vrms Resistance: 999.9Ω 0.1Ω 100Ω ± 80Ω) Continuity LOW RESISTANCE Ω Range Res. Accuracy Max. open Overload circuit Volt Protection ±2% + 2d >30V AC/DC 40Ω 0.01Ω Model 380363 Version 2.0 July 2005...
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Page 4: Meter Description
Failure to do so could result in damage to equipment and electrical shock. If replacing the test leads does not solve the problem, return the instrument for repair. Model 380363 Version 2.0 July 2005... - Page 5 3. Press LOCK or TEST to disable the Lock function and end the test. Notes on IR (Megohmeter) testing: The maximum measurement range for the 380363 is 10GΩ. Frequently, insulation resistance will exceed this value and the meter will show the overload display symbol OL, indicating that the insulation under test is good.
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Page 6: Ac/Dc Voltage Measurement
7. Swap the red and black probes to reverse the polarity of the test current. The reading should remain the same. This test is useful to detect corroded connections which can cause different readings in both polarities. Model 380363 Version 2.0 July 2005... -
Page 7: Maintenance
Check and replace the fuse if necessary (0.5A / 600V fast blow) Affix the rear cover and secure the rear screws Cleaning Periodically wipe the case with a dry cloth. Do not use solvents or abrasives to clean this instrument. Model 380363 Version 2.0 July 2005... - Page 8 Refer to diagram at below. Mains Motor Line Starter Switch Notes: 1. The STARTER must be in the ON position during the Model 380363 Version 2.0 July 2005...
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Page 9: Testing Cables
Refer to diagram. In the diagram, note that the 3-conductor cable has two wires shorted to the ground shield. This two-wire/shield connection is then connected to one side of the meter. The remaining conductor is connected to the other side of the meter. Model 380363 Version 2.0 July 2005... -
Page 10: Repair And Calibration
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 on 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.