Promax PE-455 Manual De Instrucciones página 30

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Press the TEST button. The value of insulation resistance in megohms will be
displayed.
CAUTION: Never turn the function dial while while a reading is being taken. This
may damage the instrument. Never touch the circuit during insulation
testing.
Only disconnect the test leads if you are sure that the test is completed. This is
because the system may be charged up and it must be allowed to discharge
through the tester's internal discharge resistor.
Continuity discharge (Resistance tests)
WARNING:
Ensure circuit is not live before commencing testing.
Select the 200 Ω range by rotating the FUNCTION switch and connect the test
leads to the instrument. Short the tips of the test leads. Press the button TEST
to start the reading and the timer functions.
The display will show the resistance of the test leads. Adjust the Ω Null control
to set the reading to zero.
Connect the test leads to the circuit under test. Ensure the circuit is not live by
checking that the live circuit indicator does not light. Read the value of
resistance from the LCD.
AC voltage test:
Set the FUNCTION switch to ACV. Connect test leads to circuit being measured.
Press TEST button and read the value of voltage from the LCD.
Page 8
USER'S MANUAL. PE-455
11/2014

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