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Read

and

understand

all of the instructions and safety information in this

manual before operating or servicing this tool.

INSTRUCTION MANUAL

5990A

Megohmmeter

www.calcert.com

[email protected]

1.888.610.7664

Содержание 5990A

Страница 1: ...and understand all of the instructions and safety information in this manual before operating or servicing this tool INSTRUCTION MANUAL INSTRUCTION MANUAL 5990A Megohmmeter www calcert com sales calc...

Страница 2: ...12 13 Measurements 14 18 General Information About DC High Voltage Testing 14 Guard Terminal 15 Insulation Resistance Measurement 16 17 Voltage Measurement 18 Maintenance 19 21 Specifications 22 23 A...

Страница 3: ...familiarize all personnel with the safe operation and maintenance procedures for Greenlee 5990A Megohmmeter Keep this manual available to all personnel Replacement manuals are available upon request a...

Страница 4: ...word defined below indicates the severity of the hazard The message after the signal word provides information for preventing or avoiding the hazard SAFETY ALERT SYMBOL Immediate hazards which if not...

Страница 5: ...inals or between any input terminal and earth ground Do not contact the test lead tips or any uninsulated portion of the accessory Do not contact the test lead tips while performing the insulation res...

Страница 6: ...ment Please wait discharging message will be displayed Handling with capacitive loads Note that 40 nF charged to 1 kV or 9 nF charged to 5 kV are hazardous live Never touch the measured object during...

Страница 7: ...tery In battery charging mode it flashes 2 Hazardous Voltage Warning icon This indicates that voltage higher than 70 V may be present at the test terminals 3 Analog display 4 Auxiliary digital display...

Страница 8: ...e display backlight ON or OFF 4 t cursor Press to decrease the test voltage parameter or resistance limit value 5 u cursor Press to increase the test voltage parameter or resistance limit value 6 STAR...

Страница 9: ...intended to lead away potential leakage current while measuring the Insulation Both green sockets are connected together inside of the instrument 3 OUT Positive Insulation Resistance test terminal Us...

Страница 10: ...Connector Connectors cont d 1 Mains connector This is to connect the instrument to the mains supply Use original mains supply cable only Instrument Description cont d www calcert com sales calcert co...

Страница 11: ...5 High voltage tip red black 5kV d c double insulation Alligator red black 5kV d c double insulation See Fig 6 Guard banana connector green 600V CAT IV double insulation Cable yellow 12kV shielded Se...

Страница 12: ...nnot be turned ON The test leads have to be disconnected during auto calibration If not the auto calibration procedure could fail After finishing the auto calibration the pass icon will appear the ins...

Страница 13: ...mains supply while the instrument is ON will cause the instru ment to be powered by the mains supply If the instrument is not in Insulation Measuring Mode the internal charger will charge the batterie...

Страница 14: ...ages DC is mostly used for insulation resistance measurement tests In this type of test the voltage is defined by the appropriate product application group This test voltage is lower than the voltage...

Страница 15: ...Fig 11 below Where Ut Test voltage IL Leakage current resulted by surface dirt and moisture IM Material current resulted by material conditions IA A meter current Result without using GUARD terminal...

Страница 16: ...st leads to the instrument and to the test object Select INSULATION RESISTANCE mode by pressing the button Press the START STOP button and release it This will begin continuous measurement Wait until...

Страница 17: ...Resistance Limit Value for Insulation Resistance Fig 13 Press the button Adjust the limit value using the t and u buttons Press the button again or the START button to return to the insulation resist...

Страница 18: ...ement Procedure Connect the test leads to the instrument and to the measured source Press the V button to select voltage mode and continuous measurement will automatically start to run Warning Refer t...

Страница 19: ...ng the battery cover to avoid electric shock Remove the battery cover Insert batteries correctly see Fig 15 otherwise the test instrument will not operate Replace the battery cover and fixed the cover...

Страница 20: ...instrument will not operate and the batteries may be discharged Replace the battery cover The Instrument will only work when rechargeable batteries are inside the instrument Nominal power supply volt...

Страница 21: ...on based liquids Do not spill cleaning liquid on the instrument Calibration Greenlee recommends that the 5990A Megohmmeter be routinely calibrated to ensure accuracy Service For repairing under or out...

Страница 22: ...5 999 k 1 k 5 of reading 3 digits 1 00 9 99 M 10 k 10 0 99 9 M 100 k 100 999 M 1 M 1 00 9 99 G 10 M 10 0 99 9 G 100 M 100 999 G 1 G 10 of reading 3 digits Full scale value of insulation resistance is...

Страница 23: ...ge Display range test voltage V Resolution Accuracy 0 and 45 65 0 1 Hz 0 2 Hz Note For a frequency between 0 and 45 Hz frequency result is shown as For a frequency over 65 Hz frequency result is shown...

Страница 24: ...ment Conditions Working Temperature Range 10 50 C Nominal reference Temperature Range 10 30 C Storage Temperature Range 20 70 C Maximum Humidity 90 RH 0 40 C non condensing Nominal reference Humidity...

Страница 25: ...iances portable equipment and the circuits they are plugged into Some exam ples include light fixtures televisions and long branch circuits Measurement Category III Distribution level Permanently inst...

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