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MD-5075x

5kV Insulation tester

User’s Guide

© 2009 Sourcetronic. All rights reserved.

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Summary of Contents for MD-5075 Series

Page 1: ...3 MD 5075x 5kV Insulation tester User s Guide 2009 Sourcetronic All rights reserved...

Page 2: ...tween the terminals while a measurement is running because it could be dangerous for the operator Be sure that there are not any voltage difference between the points to which the megohmmeter will be...

Page 3: ...__________________________________15 9 1 Measurement of the Polarization Index PI _________________________16 9 2 Measurement of the Dielectric Absorption Index DAI _________________16 10 Other functi...

Page 4: ...ctric absorption index automatic measurement Measurement of Leakage Current and Capacitance TIMER to program resistance test time Limit allowing making test type Pass Fail with programmable limit Step...

Page 5: ...el control functions Voltage output terminal V Zero reference terminal R Guard G Terminal Display Keyboard High Voltage led On Off key RS 232 communication port Power supply input Printer Paper feed c...

Page 6: ...dex DAI Backlight activates the display light Capacitance exhibit the capacitance value Indicates that the capacitance value is being exhibited Activated enables the programming of the Operation Mode...

Page 7: ...is lower than programmed limit Start Start test Indicates that the test is being executed Stop End of test 4 Display Measurement results in the corresponding measuring unit elapsed time since the mea...

Page 8: ...n of the MD 5075x till it is again turned off Note the battery losses part of its charge slowly even when it is not under use Before using this device or after not using it for a long time the battery...

Page 9: ...in the picture are merely illustrative so there can be differences between them and the ones which really come with the equipment Observation At the time of the connection the equipment automatically...

Page 10: ...measurement is performed one of the GUARD or R terminals must be grounded but not both of them simultaneously Technical Note 32 reproduced at the end of the manual explains the usage of GUARD termina...

Page 11: ...e Test voltage is the only one parameter that may be modified during tests 8 2 Selection of the operation mode The MD 5075x megohmmeter has four operation modes Normal with TIMER SVT and Pass Fail The...

Page 12: ...multiple of 500V up to a 5000V limit It is advisable to use the key in order to select this value and keys may be used but if the selected value is not a multiple of 500 it will be rounded down The t...

Page 13: ...ing unit and the analogue indication will start by bar graph In order to end tests press the key At that moment last measured values will remain frozen in the MD 5075x display By pressing the key agai...

Page 14: ...xcessive presence of dust dirt and greases or through the action of chemical and physical agents PI R R 10 minutes 1 minute 9 2 Measurement of the Dielectric Absorption Index DAI When pressing the key...

Page 15: ...han 300M In these cases it is convenient to press the key before starting the measurement activating the filter which allows for the reaching of the insulation resistance value in an upward curve with...

Page 16: ...the key without interrupting the tests When this key is pressed again the megohmmeter updates the resistance and chronometer values The led on key and the letter H on the display indicate that the fun...

Page 17: ...elect the Hyper Terminal program In order to create a new connection enter a name select an icon and click on OK Choose the correct communication port in the next window After clicking on OK select th...

Page 18: ...x will be printed after 1 minute and 10 minutes respectively Printing may be started or stopped at any time during the test However it is convenient to turn the printer on before starting the test in...

Page 19: ...ls and connectors of the equipment must stay dry and clean Cleaning should be made using a wet cloth in water and a soft detergent or isopropyl alcohol be sure that the products to be used for cleanin...

Page 20: ...cuit current Max 2mA Display Alphanumeric It exhibits measurements both digitally and analogically by bar graph Test voltages accuracy 3 of nominal value over a 10G resistance Megohmmeter accuracy 5 o...

Page 21: ...IEC 61000 4 3 Electrostatic immunity In accordance with IEC 1000 4 2 Power supply Internal rechargeable battery NI MH 12 V 3 Ah mains of 100 240V Battery charger For 100 240V Operating temperature 5 C...

Page 22: ...er The unknown resistance Rx is connected between Vt and R terminals Its value determines the current passing through the circuit which in turn is indicated by the microammeter The value of Rx can be...

Page 23: ...duced during reading Through resistance R2 circulates a current which is not passing through the meter and consequently does not affect the reading In fact current through R2 originates a certain erro...

Page 24: ...age in transit SOURCETRONIC will at its option repair or replace the defective equipment free of charge or refund your purchase price However if SOURCETRONIC determines that the failure was caused by...

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