Greenlee 5880 User manual

999 3285.7 © 2001 Greenlee Textron IM 1423 REV 1 4/01
5878 • 5880 • 5882
MEGOHMMETERS
MEGÓHMETROS
MEGOHMMETRES
INSTRUCTION MANUAL
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MANUEL D’INSTRUCTIONS
Read and understand all of the instructions and safety
information in this manual before operating or servicing this tool.
Lea y entienda todas las instrucciones y la información sobre
seguridad que aparecen en este manual, antes de manejar estas
herramientas o darles mantenimiento.
Lire attentivement et bien comprendre toutes les instructions et
les informations sur la sécurité de ce manuel avant d‘utiliser ou de
procéder à l‘entretien de cet outil.

2
Description
The Greenlee 5878, 5880 and 5882 Megohmmeters are intended to test insulation, detect
voltage and verify continuity. In addition, the 5882 can measure resistance.
Safety
Safety is essential in the use and maintenance of Greenlee tools and equipment. This
instruction manual and any markings on the tool provide information for avoiding hazards and
unsafe practices related to the use of this tool. Observe all of the safety information provided.
Purpose
This instruction manual is intended to familiarize all personnel with the safe operation and
maintenance procedures for the Greenlee 5878, 5880 and 5882 Megohmmeters.
Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge.
and are registered trademarks of Greenlee Textron.
KEEP THIS MANUAL

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Important Safety Information
This symbol is used to call your attention to hazards or unsafe practices which could
result in an injury or property damage. The signal 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 avoided, WILL result in severe injury or death.
Hazards which, if not avoided, COULD result in severe injury or death.
Hazards or unsafe practices which, if not avoided, MAY result in injury or property
damage.
Read and understand this material before operating or servicing
this equipment. Failure to understand how to safely operate this
tool can result in an accident causing serious injury or death.

4
Important Safety Information
Electric shock hazard:
• Do not use the unit if it is wet or damaged.
• Use test leads or accessories that are appropriate for the application. See the
category and voltage rating of the test lead or accessory.
• Inspect the test leads or accessory before use. They must be clean and dry, and the
insulation must be in good condition.
Failure to observe these warnings can result in severe injury or death.
Electric shock hazard:
• Do not apply more than the rated voltage between any two input terminals, 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 resistance test.
• Do not contact the test lead tips while the continuity function (20 Ω) is selected.
Failure to observe these warnings can result in severe injury or death.
Electric shock hazard:
Contact with live circuits can result in severe injury or death.

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Important Safety Information
Do not change the measurement function while the test leads are connected to a
component or circuit.
Failure to observe this precaution can result in injury and can damage the unit.
• Do not attempt to repair this unit. It contains no user-serviceable parts.
• Do not expose the unit to extremes in temperature or high humidity.
See Specifications.
Failure to observe these precautions can result in injury and can damage the unit.
• Do not operate with the case open.
• Before opening the case, remove the test leads from the circuit and shut off the unit.
Failure to observe these warnings can result in severe injury or death.
The fuse is an integral part of the overvoltage protection. When fuse replacement is
necessary, see Specifications for the correct type, size and capacity. Using any other
type of fuse will void the overvoltage protection rating of the unit.
Failure to observe this warning can result in severe injury or death.

6
Important Safety Information
Shut off and lock out power. Make sure that all capacitors are discharged. Voltage must
not be present.
Set the selector and connect the test leads so that they correspond to the intended
measurement. Incorrect settings or connections can result in a blown fuse.
Using this unit near equipment that generates electromagnetic interference can result
in unstable or inaccurate readings.

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Identification
All Models
1. Positive (+) Input Terminal
2. Negative (–) Input Terminal
3. Display
4. Insulation Resistance Test Button
5. Selector
Models 5880 and 5882 Only
6. Alarm Button
7. Select a Parameter or Value
8. Change the Value
9. Backlight
Model 5882 Only
10. TIMER
1 2
3
4
5
9
6
7
8
10

8
Display Icons
11. –Polarity indicator
12. Insulation resistance test in progress
13. Insulation resistance is less than 70 kΩ
14. Bar graph element
15. Insulation resistance is greater than 1.1 GΩ
16. Timer is active
17. ALARM Alarm is on, or programming is in progress
18. < Alarm will trigger if measured value is less than the setpoint
19. > Alarm will trigger if measured value is greater than the setpoint
20. 00:00 Timekeeper display or
0000 Setpoints
21. G 109
22. M 106
23. k 103
24. ΩOhms
25. OL Overload (insulation resistance is greater than 2 GΩ)
26. V Volts
27. AC Alternating Current
28. DC Direct Current
29. Battery status
30. Auto power off is inactive
31. Speaker is active
32. Ω/Lead resistance is compensated
33. > 25 Circuit voltage is greater than 25 volts; insulation resistance test
(yellow button) is disabled
34. Read the instruction manual

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Other Symbols
BAT Insufficient battery power
Ω/(flashing) Lead resistance is compensated incorrectly
FUS Replace the fuse
––– Insulation resistance is less than:
•50 kΩon the 250 V range
•100 kΩon the 500 V range
•200 kΩon the 1000 V range
Symbols on the Unit
Read the instruction manual.
Fuse
Double Insulation
Battery
Display Icons (cont’d)
12
13
16
17
11
34
14 20
18
19
15
29
21–24
26–28
25 30313233

10
Using the Features
Insulation Resistance Measurement Test Button (Yellow Button)
Press to apply the test voltage to the item to be tested. Release to terminate the test.
•While the yellow insulation resistance test button is pressed, the will appear on the
display.
•See the Indicator Table for results of the insulation test.
Alarm (Models 5880 and 5882 only)
Press ALARM to turn the alarm on and review the setpoints. Press again to turn the alarm off.
Note: When the alarm function is active, a continuous tone and flashing ALARM on the display
indicate that the measured value matches the alarm setpoint.
Alarm Setpoints (Models 5880 and 5882 only)
1. Press and hold ALARM to review the setpoints.
2. Press and to change the setpoints. Press and hold ALARM to save the settings.
•Default settings are:
> 0.25 MΩ(MΩ–250 V position)
> 0.50 MΩ(MΩ–500 V position)
> 1.00 MΩ(MΩ–1000 V position)
< 20.00 kΩ(400 kΩposition)
< 2.00 Ω(20 Ωposition)
•Minimum/Maximum settings are:
< or > 0.05 MΩ/ 2000 MΩ(MΩ–250 V position)
< or > 0.10 MΩ/ 2000 MΩ(MΩ–500 V position)
< or > 0.2 MΩ/ 2000 MΩ(MΩ–1000 V position)
< or > 0 Ω/ 399.9 kΩ(400 kΩposition)
< or > 0 Ω/19.99 Ω(20 Ωposition)
Note: The megohmmeter will correct any setting that is entered improperly.
Timed Insulation Resistance Test (Model 5882 only)
1. Press TIMER. The icon and a timekeeper (0:00) will appear on the display.
2. Press and release the yellow test button to start the timer and initiate the test voltage.
The will appear on the display and the timekeeper will show the elapsed time.
3. Make a note of the reading on the display when the speaker sounds
(after 30 seconds, 1 minute and 10 minutes).
4. Press the yellow test button to terminate the test.

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Using the Features (cont’d)
5. Use the readings to calculate the DAR (dielectric absorption rate):
DAR = measurement after 1 minute
measurement after 30 seconds
6. Use the readings to calculate the PI (polarization index):
PI = measurement after 10 minutes
measurement after 1 minute
The following parameters indicate acceptable insulation:
DAR > 1.25
PI > 2
Note: The timed test will automatically shut off after 15 minutes.
Speaker
See the Indicator Table for information on the tones generated by the speaker.
To disable the speaker:
•Model 5878: Set the selector to 20 Ω, then press the yellow test button. The icon will
disappear from the display.
•Model 5880 and 5882: Press ALARM while turning the unit ON. The icon will not
appear on the display.
To enable the speaker on any model: Switch the unit OFF, then back ON.
Backlight
Press to turn on the backlight. Press again to turn off.
Note: The backlight will automatically shut off after 1 minute.
Automatic Power-Off
To extend battery life, the megohmmeter will shut itself off after approximately 5 minutes of
inactivity. To restore power, press any button or rotate the selector.
Models 5880 and 5882 only: To disable this feature, press and hold while turning the
power ON. The icon will appear on the display.

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*After turning the megohmmeter on, the display will show the icon and the
approximate amount of battery life as a percentage.
Indicators
The Indicator Table provides information for interpreting the battery status indicator, results of
the insulation test, and the tones produced by the speaker.
Indicator Table
Feature Indication Explanation
No display Good battery
Battery life is limited.
Battery Flashing
Status* Battery is low. Measurements may not be accurate.
Continuous Replace the battery.
BAT Battery is discharged. Unit will shut down automatically.
A short, •any button is pressed
low-pitched •the automatic power off feature is turning the unit off
tone •lead resistance compensation
•TIMER function (sounds at 30 seconds,
1 minute and 10 minutes)
A continuous, •the measurement is lower than the minimum alarm setpoint
Speaker low-pitched •the measurement is higher than the maximum alarm setpoint
tone
A short, An inactive button is pressed (except the yellow test button)
high-pitched
tone
A repeated, The automatic voltage check has measured more than 25 volts
high-pitched and the insulation resistance test is in progress.
tone Insulation test will be disabled.
OL The insulation resistance is greater than 2.0 GΩ
The insulation resistance is greater than 1.1 GΩ
Insulation ––– The insulation resistance is less than:
Resistance •50 kΩat 250 V
Test •100 kΩat 500 V
•200 kΩat 1000 V
The insulation resistance is less than 70 kΩ

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Operation
Electric shock hazard:
Contact with live circuits can result in severe injury or death.
Electric shock hazard:
Do not contact the test lead tips while the continuity function (20 Ω) is selected.
Failure to observe this warning can result in severe injury or death.
1. Set the selector to the proper setting and connect the test leads to the meter.
2. See Typical Measurements for specific measurement instructions.
3. Test the unit on a known functioning circuit or component.
•If the unit does not function as expected on a known functioning circuit, replace the
battery and/or fuses.
•If the unit still does not function as expected, send the unit to Greenlee for repair.
4. Take the reading from the circuit or component to be tested.

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Typical Measurements
Insulation Resistance Test
1. Set the selector to the appropriate MΩ–voltage range:
•MΩ–250 V •MΩ–500 V •MΩ–1000 V
2. Connect the + lead to the ground and the –lead to the test point.
3. Press the yellow insulation resistance test button to initiate the test voltage. Release to
terminate the test voltage.
4. See the Indicator Table to interpret the display.
After connection, the megohmmeter automatically will measure the voltage of the item under
test. If voltage is present, the voltage will appear on the display.
•If the voltage is more than 0 V, but less than 25 V, the results of the insulation resistance
test might not be accurate.
•If the voltage is greater than 25 V, the insulation resistance test function will be disabled.

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Typical Measurements (cont’d)
Continuity Check
1. Set the selector to the 20 Ωposition.
2. Connect the test leads across the device to be tested.
3. The display indicates the resistance of the circuit or component, or OL if the resistance is
greater than 20 Ω. The internal fuse is automatically tested during the continuity check.
Models 5880 and 5882 only:
To improve the accuracy of the continuity measurement, compensate for the resistance of the
test leads as follows:
1. Connect the test leads together.
2. Press and hold until Ω/appears on the display. This procedure will subtract the
lead resistance from the continuity measurement.
3. To cancel this compensation, press and hold until Ω/disappears from the display.

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Typical Measurements (cont’d)
Resistance Measurement (Models 5880 and 5882 only)
1. Set the selector to the 400 kΩposition.
2. Connect the test leads across the device to be tested.
3. The display indicates the resistance of the circuit or component, or OL if the resistance is
greater than 400 kΩ.

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Accuracy
Accuracy is specified as follows: ±(a percentage of the reading + a fixed amount)
at 20 °C to 26 °C (68 °F to 78.8 °F), 45% to 55% relative humidity.
Accuracy Table
*Capacitance between 0 and 5 µF in parallel to resistance can add ±(10% + 1 d) additional
error.
Insulation Resistance Test
Range Open Circuit Voltage Test Current Short Circuit Current
250 V < 300 V ≥1 mA for R ≤250 kΩ
500 V < 600 V ≥1 mA for R ≤500 kΩ≤3 mA
1000 V < 1200 V ≥1 mA for R ≤1 MΩ
Value Range Accuracy Notes
AC Test 399.9 V 300 kΩ
600 V Input Impedance
Insulation 39.99 MΩ±(3 % + 0.05 MΩ)
Resistance* 399.9 MΩ±(3 % + 0.2 MΩ)
Testing 2.000 GΩ±(3 % + 0.002 GΩ)
Open Circuit Voltage:
Continuity 0.00 to 20.00 Ω±(3 % + 0.01 Ω) 7 V to 9 V
Test Current: 200 mA
399.9 Ω±(3 % + 0.5 Ω)
Resistance* 3999 Ω±(3 % + 5 Ω)Open Circuit Voltage:
39.99 kΩ±(3 % + 0.01 kΩ)7 V to 9 V
399.9 kΩ±(3 % + 0.1 kΩ)
Timer (Model 5882 only)
Range Resolution Accuracy
0:00 to 15:00 min 1 s 2%

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Specifications
Display: 3-1/2-digit LCD (3999 maximum reading) and 35-segment bar graph
Sampling Rate:
Numeric Display: 2.5 per second
Bar Graph Display: 10 per second
Automatic Power-Off: After 5 minutes of inactivity
Temperature Coefficient: ±(2% + 2 d*) per 10 °C over 26°C or under 20 °C
Operating Conditions: –10 °C to 55 °C (14 °F to 131 °F), 20% to 80% relative humidity
Storage Conditions: –40 °C to 70 °C (–40 °F to 158 °F), 10% to 80% relative humidity
Remove batteries.
Protection Category: IP44
Pollution Degree: 2
Overvoltage Category: Category II, 300 Volts
Battery: Six 1.5 V AA (NEDA 15 A or IEC LR6)
Fuse: 0.63 A/660 V, interrupting rating 30 kA, 1/4" x 1-1/4"
*d refers to the least significant digit (the number in the right-most position).

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1. Disconnect the unit from the circuit. Turn the unit OFF.
2. Turn the latch 1/4 turn counterclockwise.
3. Remove the back cover.
4. Replace the batteries (observe polarity) and/or fuse.
5. Replace the cover and turn the latch 1/4 turn clockwise to secure.
Before opening the case, remove the test leads from the circuit and shut off the unit.
Failure to observe this warning can result in severe injury or death.
Battery and Fuse Replacement
The fuse is an integral part of the overvoltage protection. When fuse replacement is
necessary, see Specifications for the correct type, size and capacity. Using any other
type of fuse will void the overvoltage protection rating of the unit.
Failure to observe this warning can result in severe injury or death.

20
Descripción
Los Megóhmetros modelos 5878, 5880 y 5882 de Greenlee están diseñados para verificar
aislamiento, detectar tensión y verificar continuidad. Asimismo, el modelo 5882 puede medir
resistencia.
Acerca de la seguridad
Es fundamental observar métodos seguros al utilizar y dar mantenimiento a las herramientas y
equipo Greenlee. Este manual de instrucciones y todas las marcas que ostenta la herramienta
le ofrecen la información necesaria para evitar riesgos y hábitos poco seguros relacionados
con su uso. Siga toda la información sobre seguridad que se proporciona.
Propósito de este manual
Este manual de instrucciones tiene como propósito familiarizar a todo el personal con los
procedimientos de operación y mantenimiento seguros para los Megóhmetros modelo 5878,
5880 y 5882 de Greenlee.
Mantenga siempre este manual al alcance de todo el personal.
Puede obtener copias adicionales de este manual de manera gratuita, previa solicitud.
y son marcas registradas de Greenlee Textron.
CONSERVE ESTE MANUAL