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Extech Instruments 380366, User Manual

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User's Manual

 

 

 
 
 

Autoranging Datalogging Insulation Tester 
(Megohmmeter) 

with PC Interface 

 
 

Model 380366 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Introduction 

Congratulations on your purchase of the Extech 380366 Datalogging Insulation Tester. 
The 380366 measures insulation resistance to 4000M

Ω

 and includes Continuity and 

Voltage tests. The built-in datalogger remotely stores approx. 16,000 readings for later 
transfer to a PC. The tester can also take and record readings to a PC in real time. This 
professional tester, with proper care, will provide years of safe reliable service. 

 

99 Washington Street 
Melrose, MA 02176 

Phone

 781-665-

1400

Toll Free 1-800-517-8431

 

Visit us at www.T

estEquipmentDepot.com

Back to the 

Extech 380366

 Produc

t 

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Summary of Contents for 380366

Page 1: ...MΩ and includes Continuity and Voltage tests The built in datalogger remotely stores approx 16 000 readings for later transfer to a PC The tester can also take and record readings to a PC in real time This professional tester with proper care will provide years of safe reliable service 99 Washington Street Melrose MA 02176 Phone 781 665 1400 Toll Free 1 800 517 8431 Visit us at www TestEquipmentDe...

Page 2: ...inforced insulation Specifications General specifications Display Backlit 3 3 4 digit 4000 count LCD with analog indicator Sampling rate 2 5 samples sec digital 10 samples sec analog Audible Continuity Low resistance range with audible continuity 40Ω Over range indicator OL displayed when measurement exceeds range limits Low battery indicator symbol displayed when battery voltage is low Datalogger...

Page 3: ...Voltage Ranges Maximum Resolution Resistance Accuracy Voltage Accuracy 250V 20 0 500V 20 0 1000V 4 40 400 4000MΩ 1kΩ 3 rdg 5d 2000MΩ 5 rdg 5d 2000MΩ 10 0 Voltage Range 1mA Test Current Short Circuit Current 250V 250KΩ 500V 500KΩ 1000V 4000MΩ 1MΩ 1 5mA Note Accuracies are specified as reading digits at 73 F 9 F 23 o C 5 o C 80 RH Meter Description 1 LCD Display 2 Megohmmeter TEST pushbutton 3 Test ...

Page 4: ...play 5 To clear the display press the LOCK HOLD button twice Note that the charge stored on the device under test will be automatically discharged when the testing process is finished 3 Minute Test For hands free operation use the Test Lock feature 1 Connect the red test lead to the HI input terminal black lead to the LO terminal 2 Set the rotary switch to the desired function 3 Connect the tips o...

Page 5: ...esistance Measurements Megohmmeter tests but for the other tests the user must press the HOLD key to freeze the meter reading Press HOLD again to exit the Data Hold mode Auto Power OFF Feature After a 30 minute period of non use the meter automatically shuts down This will conserve battery life To wake the meter press the Backlight button Note that the meter is not completely off until the functio...

Page 6: ...apturing one data point Press the RECORD button for one second to capture one reading The REC display icon will briefly appear at the top of the LCD and the large digits will flash the data point number the recorded measurements are numbered Each reading captured by this method is considered a Set c Capturing a continuous stream of data points 1 Press and hold the RECORD button for approx 3 second...

Page 7: ...e program icon 2 Select PC communications port COM1 or COM2 when prompted 3 The Program screen will appear as a facsimile of the meter s front panel see below Data Acquisition and Datalogger modes These two modes of operation distinctly different are explained in detail separately For the Data Acquisition mode of operation the meter must be connected to the PC In this mode readings taken by the me...

Page 8: ...re how often to log a reading The sampling time can be set from 1 to 65 400 seconds See the LOGGER screen at right 1 Click on the wrist watch icon from the row of Control Icons on the main software screen 2 Highlight the existing value in the SAMPLING field 3 Type in the desired sampling time 4 Click the Sampling button when finished Creating a File to store data 1 Click the floppy disk icon from ...

Page 9: ...l Use the four front panel keys on the main software screen to remotely control the meter TEST button Click to start a megohmmeter test LOCK button Click to lock the test for 3 minutes read about the LOCK function earlier in this manual HOLD button Click to freeze the displayed reading The H display icon will appear while the meter is in the Data Hold mode Press HOLD again to exit this mode REC bu...

Page 10: ...download all of the data sets from the meter to the PC The data lists will appear as shown on the logger window diagram below 4 Select a set of data by clicking on the set number The NUMBER OF SET field informs the user as to which set is selected The NUMBER OF RECORDS field lets the user know the number of readings in the selected set 5 The MEMORY and REMAINING fields inform the user as to the to...

Page 11: ... on the commutator 3 If the resistance measurement indicates a weakness raise the brushes off of the commutator and separately test the armature field coils and brush rigging one at a time Leave one lead connected to the grounded motor housing while testing the motor components This also applies to DC Generators Testing Cables 1 Disconnect the cable under test from the line 2 Disconnect the opposi...

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