KYORITSU 3127 - Manual (Page 18)

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6-2 Insulation resistance measurement
# DANGER
● Confi rm that no electrical charge exists on the circuit under test before
measuring by using a high voltage detector.
● Put on a pair of insulated gloves for high voltage.
● In case the Range switch is set to Insulation resistance range, high voltage
is being applied to the tips of test leads and to the circuit under test
continuously while the Test button is kept pressed down. Be extremely
careful not to get electric shock.
● Do not start measurement with the battery cover removed.
● Never start measurement when thunder rumbling.
● Connect the Earth Cord (black) to the earth terminal of the circuit under test.
● When any mode other than VOLT mode is selected, live circuit warning
symbol appears on the LCD and the audible warning activates when a
voltage of 30V or higher is measured.
KEW3127 doesn’t start a test, even the Test button is pressed down, if the
measuring voltage is 160V or higher: it starts a test if the measuring voltage
is under 160V upon a press of the Test button.
Prior to testing, ensure that the equipment under test is disconnected from
the mains supply and not energized in order to avoid possible electrical
hazards. This instrument may start a measurement for energized electrical
circuits. Be extremely careful not to get electrical shock.