380395_380396-en-EU_V1.3 8/14
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Insulation Resistance Testing
CAUTIONS:
Ensure that no electrical charge exists on the circuit under test.
Insulated gloves should be worn while testing.
Use extreme caution to avoid touching the tips of the test leads or the circuit under test
when the PRESS TO TEST button is pressed; High Voltage is present.
Do not make measurements when the battery cover is removed.
Always connect the Earth Cord (black) to the Earth terminal of the circuit under test.
CAUTION: When the live circuit warning indicates “>30V” or the warning buzzer sounds and
the
display flashes, the measurement cannot be made even if the
“Press to Test” button is pressed.
DANGER
Do not touch the circuit under test immediately after testing. Voltage stored in the circuit may
cause electric shock.
Leave the test leads connected to the circuit under test and never touch the circuit until the
discharge is complete.
PRESS TO TEST Knob
All insulation resistance tests are initiated with the PRESS TO TEST
knob.
1. Press and HOLD the knob to perform a test. Release the knob to
end the test.
2. Press and TURN the knob 90 degrees clockwise to the LOCK
position to lock the meter in the continuous test mode. To end a test,
either rotate the knob 90 degrees counterclockwise or press the
STOP button.
3. Always return the knob to the vertical position before beginning a
test.
Emergency Stop
To stop a test at any time, press the STOP button or rotate the PRESS TO TEST knob in a counter-
clockwise direction.
The STOP button also clears the display and beeper after a discharge is complete.
