User`s Manual Autoranging Datalogging Insulation Tester
Contents
1. Si f LOGGER X R mn ize o emaining overall eva Remand storage space memory Number of data sets in memory Number of records in selected set User ID Code amp Sample rate Click to download all stored sets loaded sets SHOW DATA x Clicka Click to view number to data for the select a set selected set 10 380366 V1 6 11 04 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Applications Measuring Power Tools and Small Appliances This section applies to any device under test that uses a line cord For double insulated power tools the meters leads should be Appliance connected to the device s housing chuck blade etc and the ground of the power cord Refer to the diagram at right Testing AC Motors Disconnect the motor from the line by disconnecting the wires from the motor terminals or opening the mains switch If the mains switch is opened and the motor also has a motor starter then the starter must be held in the ON position With the mains switch opened the measured resistance will include the resistance of the motor wire and all other components between the motor and the main switch If a weakness is indicated the motor and other components should be checked individually If the motor is disconnected at the motor terminals2. connect one meter lead to the grounded motor housing and the other lead to one of the motor leads Refer to diagram at below The STARTER must be in the ON position during the test 2 The motor to meter connection must be made to the motor housing ground 3 The meter to main switch connection must be to the motor side of the main switch as shown Testing DC Motors A 2 Disconnect the motor from the line To test the brush rigging field coils and armature connect one meter lead to the grounded motor housing and the other lead to the brush on the commutator 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 2 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 Disconnect the cable under test from the line Disconnect the opposite end of the cable to avoid errors as a result of leakage from other equipment Check each conductor to ground and or lead sheath by connecting one meter lead to ground and or lead sheath and the other meter lead to each of the conductors in turn Check insulation resistance between conductors by connecting meter leads to conductors in pairs Refer to diagram at right In th
3. 3 Saved files can be opened in spreadsheet programs as dat text files by opening the spreadsheet application selecting OPEN FILE choosing ALL FILE TYPES and locating the file previously stored Start and Stop Recording 1 Click the red icon 2 from left from the row of Control Icons on the main software screen to start recording If a file has not been set up at this point the software will prompt for a file name 2 Data will now be logged every n seconds where nis the programmed sampling time To stop recording click the black icon 3 from left in the row of Control Icons 8 380366 V1 6 11 04 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Open an existing Data File if Click on the folder icon 4 from left in the row of Control Icons on the main software screen Select a file from the list of 7 Time Value Unit Bat previously stored files if any 02 14 2003 12 25 51 4000M Ohm 250 V 02 14 2003 12 25 53 4000M Ohm 250 When a file is opened its data list 02 14 2003 12 28 58 4000M Ohm 250 V will appear containing the date time 02 14 2003 12 25 59 0 0 y for each reading measurement unit 02 14 2003 12 26 01 0 0 xX 02 14 2003 12 26 03 0 0 isd of measure and low battery 02 14 2003 12 26 05 0 0 w i j i i 02 14 2003 12 26 07 0 0 wN indication see diagram at right 02142003 1226 09 10 0 02 14 2003
4. H icon in the upper left corner of the display 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 of the test leads to the equipment under test 4 Press the LOCK button The LOCK icon will be displayed Press the red TEST button A 3 minute continuous test will begin The red TEST button can be pressed at any time to end the test If the TEST button is not pressed the meter automatically stops the test after 3 minutes The meter will then hold the resistance reading This is indicated by the H icon in the upper left corner of the display 5 To clear the display press the LOCK HOLD button twice Note The A symvo will appear in the upper right corner of the display and an audible tone will sound whenever the high voltage is applied to the test leads 4 380366 V1 6 11 04 Analog Bargraph Display The bargraph can indicate up to 10GQ When the measured value is between 4GQ and 10GQ the LCD displays HI When the measured value is higher than 10GQ the LCD displays OL Low Resistance and Audible Continuity Tests WARNING Do not run this test unless ACV 0 Do notuse this mode to
5. the ENTER key 3 Follow the on screen instructions for the setup program Running the Software 1 Open the Insulate program using the 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 MePANEL V1 3 Sampling Time Control Icons Function Switch Meter buttons 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 meter are displayed and stored on the PC In the Datalogger mode the meter records data remotely then at a later time the meter is connected to the PC and the readings are transferred Instructions for datalogging were covered in the previous section Instructions for transferring data and navigating the software are given below 7 380366 V1 6 11 04 Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 FAX 781 665 0780 TestEquipmentDepot com Data Acquisition Software Mode As explained above the Data Acquisition feature allows the user to connect the meter to the PC and take and record readings simultaneously With the meter connected to the PC and with the software running follow the steps below System Time Set Click the computer icon from the row of Control Icons a
6. to take into account parallel resistances Divide large systems into subgroups and test subgroups individually Also in large installations the capacitance of the insulation will be high thereby taking longer to charge when being tested Care must be taken not to finish a measurement until the insulation capacitance is fully charged a steady stable reading is an indication that this is the case The charge stored in the insulation after a test will be discharged automatically when the test button is released Be careful not to turn the range switch while the test button is pressed 5 380366 V1 6 11 04 Built in Datalogger The meter can store approx 16 000 readings in the built in datalogger Readings are grouped in SETS Each recording session constitutes a SET Recording a new set does not erase a previously recorded set The readings remain in the datalogger memory even when power to the tester is off as long as the batteries are fresh Readings can be transferred at a later time to a PC Use the meter s RECORD button to operate the meter s Datalogger in the following ways a Clearing Datalogger memory 1 Press and hold the RECORD button while turning the meter on 2 Release the RECORD button when r clear appears on the display The entire datalogger memory will now be erased b Capturing one data point Press the RECORD button for one second to capture one reading The REC display icon will briefly appe
7. 12 26 11 0 0 a Select PRINT from the menu 02 14 2003 12 26 13 0 0 w heading to print the data list 02 14 2003 12 26 15 0 0 N 02 14 2003 12 26 17 0 0 W i 02 14 2003 12 26 19 0 0 W To import the data to spreadsheet or PANA oo other 3 party application Locate 02 14 2003 12 26 23 0 0 w s H 02 14 2003 12 26 25 0 0 y and open the file as a text file ETE Eran ay filename dat using the FILE OPEN 02 14 2003 12 26 29 0 0 w d th 3 rt 02 14 2003 12 26 31 0 0 W commands in e party 02 14 2003 12 26 33 0 0 N application 02 14 2003 12 26 35 0 0 N d Soft key Remote Control 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 button Click to put the meter into continuous recording mode Readings will be kept in the open file If a file is not open the software will prompt for a file name rec button Click to record one reading to the open file Backlight button Click to activate the meter s display backlight Test Equipment 99 Washington Street Depot Melrose MA 02176 Phone 781 665 1400 1 800 517 8431 Toll Free 1 800 517 8431 9 380366 V1 6 11 04 Datalogge
8. Test Equipment 99 Washington Street Depot Melrose MA 02176 Phone 781 665 1400 1 800 517 8431 Toll Free 1 800 517 8431 PALA Visit us at Www TestEquipmentDepot com PLS DICK tothe Exte SOU SOO Product Page User s Manual EXTECH INSTRUMENTS Autoranging Datalogging Insulation Tester Megohmmeter with PC Interface Model 380366 S HELOCKI are pan A EXTECH 320366 Ki ki iil tae on gS ie INSULATION TESTER DATALOGGER T Im mi F n so JGD C O panna N k Par 4000MQ OFF Introduction Congratulations on your purchase of the Extech 380366 Datalogging Insulation Tester The 380366 measures insulation resistance to 4000MQ 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 Safety 1 Circuits under test must be de energized and isolated before connections are made except for voltage measurements 2 Circuit connections must not be touched during a test Use extreme caution when working near bare conductors and bus bars Accidental contact with conductors could result in electrical shock Use caution when working near voltages above 60VDC
9. ar 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 seconds until a long tone is heard The REC display icon will appear and remain on the display for as long as the recording session lasts 2 To stop recording press the RECORD button again The REC indicator will switch off Each group of readings captured in this manner is considered a Set 3 Readings will be taken every 2 seconds default sampling time To change the sampling time refer to the section Datalogger Software Mode The following sections cover meter to PC data downloading amp other PC interface features 6 380366 V1 6 11 04 PC Interface Minimum hardware requirements 486 PC or better with CD ROM drive Communications Settings Baud Rate 9600 Parity None Data bits 8 Stop bits 1 Connecting the meter to a PC Connect one end of the supplied cable to the PC Com Port DB9 connector and the other end infrared connector to the top of the meter Installing Software compatible operating systems Windows 95 98 2000 Me amp XP 1 Insert the supplied CD ROM in the PC s CD ROM drive 2 The SETUP program will run automatically If not press the Windows START key and select RUN Then type SETUP at the prompt and press
10. check diodes Set the Rotary switch to the audible continuity resistance position 2 Connect the red test lead to the HI input terminal black lead to the LO terminal Connect the tips of the test leads to both ends of the circuit under test and read the resistance on the LCD 4 When the resistance of a circuit is less than approx 40Q an audible tone will sound AC Voltage Tests Set the Rotary switch to the red ACV position Connect the red test lead to the HI terminal and the black test lead to the LO terminal CON Connect the other end of the test leads to the circuit under test 4 Read the voltage value on the LCD Data Hold Function The Data Hold function freezes the displayed reading Data Hold works automatically on Insulation Resistance 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 function switch is set to the OFF position Always turn the switch to the OFF position when not in use Application Note for Large Installations In large wiring installations where the insulation of outlets is being tested more than one insulation resistance measurement may have to be made
11. devices include power factor correction capacitors low voltage mineral insulated cables electronic light dimmers and ballasts starters for fluorescent lamps Connecting Test Leads For all functions Megohmmeter Resistance Continuity and AC Voltage connect the red test lead to the HI terminal and the black lead to the LO terminal Test Lead Check 1 Connect the red test lead to the HI input terminal black lead to the LO terminal 2 Set the rotary switch to the resistance continuity position Q 3 Touch the test lead tips together Resistance should be less than 1Q and the audio tone should sound With the leads not touching the display should read OL over range 5 If any readings are displayed other than the readings just described the test leads should be considered faulty and must be replaced before using the meter Failure to do so could result in damage to equipment and electrical shock Insulation Resistance Measurements Megohmmeter Tests Warning Do not perform Insulation Resistance measurements if AC Voltage is present on circuit under test Connect the red test lead to the HI input terminal black lead to the LO terminal Set the rotary switch to the desired function Connect the tips of the test leads to the equipment under test a ee Press and hold down the red TEST button Release the test button to stop the test The meter will then hold the resistance reading This is indicated by the
12. e 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 11 380366 V1 6 11 04 FAX 781 665 0780 TestEquipmentDepot com
13. ed for indoor use only 2 380366 V1 6 11 04 Range Specifications Resistance Audible Continuity Range Resolution Accuracy Max open Overload circuit voltage Protection 4000 0 10 1 rdg 5d 12 8V 220Vrms Audible tone when Resistance lt 40Q Short circuit current 280mA min 200mA AC Voltage 40 to 500Hz Range Resolution Accuracy Input Overload impedance Protect 600VAC 1V 1 5 rdg 3d 4 5MQ 750Vrms Megohm Auto Range Voltage Ranges Maximum Resistance Voltage Resolution Accuracy Accuracy 250V 20 0 T 4 40 400 na 3 rdg 5d lt 2000MQ a 5 rdg 5d gt 2000MQ 1000V 10 0 Voltage Range 1mA Test Current Short Circuit Current 250V 250KQO 500V 4000MQ 500KQO lt 1 5mA 1000V 1MQ Note Accuracies are specified as reading digits at 73 F 9 F 23 C 5 C lt 80 RH Meter Description LCD Display Megohmmeter TEST pushbutton Test LOCK and DATA HOLD button RECORD button LCD Backlight Wake button 0 ONO OT BO NY Function select switch Storage compartment RS 232 interface jack Test Lead input jacks HI amp LO Test Leads Autoranging Datalogi Insulation Tester 380366 V1 6 11 04 Operation Warning Ensure that the circuit under test does not include components that can be damaged by 1000VDC such
14. or 30VACrms After insulation tests capacitors must be discharged Test leads including alligator clips must be in good working order clean and without broken or cracked insulation 6 When servicing use only specified replacement parts International Safety Symbols A Caution refer to this manual before using this meter A Dangerous Voltages O Meter is protected throughout by double or reinforced 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 lt 409 Over range indicator OL displayed when measurement exceeds range limits Low battery indicator symbol displayed when battery voltage is low Datalogger memory 16 000 readings Datalogger Sample Programmable 1 to 65 400 sec sample or single manual Rate record Power source Eight 1 5V AA cells Power consumption 20 to 90mA depending upon function 40 hours typical Environmental CAT Ill Altitude 2000 meters for indoor use only Operating conditions 32 to 104 F 0 to 40 C lt 80 RH Storage conditions 14 to 140 F 10 to 60 C lt 80 RH Dimensions Weight 7 5 x 5 5 x 3 190 x 140 x 77mm 2 Ibs 900g Environmental specifications Installation Category III 600V Pollution Degree 2 Altitude up to 2000 meters Intend
15. r Software Mode Datalogging Instructions for storing data in the meter s built in datalogger are provided in the Built In Datalogger section of this manual The following section details all of the datalogger functions available in the supplied software Datalogging Software Window LOGGER 1 From the main software screen click the datalog icon 3 from right from the row of Control Icons The LOGGER window will open shown below 2 To set the SAMPLING TIME rate at which datalogger stores readings type a number between 1 and 65 000 seconds in the SAMPLING field Note that the meter must be connected to the PC in order for the Sampling Time to be transferred to the meter Once the sampling time is set the meter will datalog at the rate selected 3 Click the TIME OF RECORDING button to 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 total memory capacity 32K and the remaining memory 6 Press the SHOW DATA button to view the raw data Once the data opens for the selected set the user can save or print the data by selecting SAVE or PRINT from the menu options
16. t the top of the main software screen This is the SYSTEM TIME SET button The PC system date and time will now be shared by the software program Note that if your PC date and time are not set correctly do so at this time The system time will be shown on the main software screen Input ID Code The ID Code is used as a reference number specific to a particular data acquisition session The ID Code does not affect the software other than allowing the user to match a set of data to a unique ID See the LOGGER screen at right 1 Select MEMORY from the OPTION menu EEZ EE on the main software screen Sa 2 Highlight the number in the ID Code field a acohi ae e SAMPLING 3 Click the ID Code button Sampling Time NUMBERS OF SET TIME OF RECORDIN The Sampling Time tells the software how often to log a reading The sampling time can be set from 1 to 65 400 seconds See the R LOGGER screen at right 1 Click on the wrist watch icon from the row of Control Icons on the main 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 the row of Control Icons on the main software screen and type a unique filename when prompted 2 This File can later be opened by clicking on the folder icon 4 from left from the row of Control Icons on the main software screen
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