Extech 380260 Bruksanvisning

Extech Inte kategoriserad 380260

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User Guide
Model 380260
Insulation Tester / Megohmmeter
380260 en- -US_V2.7 6/21
2
Introduction
Congratulations on your purchase of Extech’s Insulation Tester/Megohmmeter. The Model 380260
provides three test ranges plus continuity and /DC voltage measurement. A handy test lock feature AC
and a data hold function are also included. This professional meter, with proper care, will provide years
of 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.
3. Use caution when working near voltages above 60VDC or 30VACrms.
4. After insulation tests, capacitors must be discharged.
5. Test leads (including alligator clips) must be in good working order, clean and without broken
or cracked insulation.
6. When servicing, use only specied replacement parts.
International Safety Symbols
Caution, refer to this manual before using this meter
Dangerous Voltages
Meter is protected throughout by double or reinforced insulation
Meter Description
1. LCD Display
2. Hold Button
3. Test Button
4. Rotary Switch
5. Backlight Button
6. Lock Button
7. Input Terminals
380260 en- -US_V2.7 6/21
3
Operation
Connecting Test Leads
For all measurements, c nect the red test lead to the V input terminal and the black test lead to on
the COM input terminal.
Test Lead Check
1. Set the rotary switch to the 200 range.
2. Touch the test lead tips together.
3. Resistance should read less than 0.5 and the audio tone should sound.
4. With the leads not touching, the display should read infinity indicated by “1”.
5. Readings displayed other than the readings described above are indicative of a test lead
problem. The test leads 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 the device
under test.
1. Connect the red test lead to the V input terminal; black lead to the COM terminal.
2. Set the function switch to the desired M test voltage position.
3. Connect the tips of the test leads to the equipment under test. If there is a voltage present, a
constant beep will sound and the voltage will be displayed.
4. The display will show “1“until the TEST button is pushed. Press and hold the TEST button. The
upper right display shows the test voltage applied and the ashing high voltage symbol will
be displayed. The main display shows the resistance.
5. Keep the test leads connect to the equipment under test and release the TEST button. The ed
circuit will discharge through the meter. Keep the test leads connected until the circuit is
completely discharged and the upper right display shows 0 volts.
Lock Function
For hands-free operation, use the LOCK feature.
1. With the test leads connected to the equipment under test, simultaneously press the TEST and
LOCK keys.
2. The LOCK icon will appear on the display. A beeper will sound every 2 seconds to ” ”
indicate that the meter is in Lock mode.
3. Press the LOCK key to disable the Lock function and end the test.
Warning
Ensure that the circuit under test does not include components that can be damaged by 1000VDC; such
devices include power factor correction capacitors, low voltage mineral insulated cables, electronic light
dimmers, and ballasts/starters for fluorescent lamps.

Produktspecifikationer

Varumärke: Extech
Kategori: Inte kategoriserad
Modell: 380260

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