9.4 AC Measurement
The AC measurement is automatic on this instrument. As soon
as AC voltage is present on the test leads, the instrument will
display the AC voltage from 20 to 600Vac on the linear scale.
When measure AC voltage, the testing duration can not be
more than one minute.
Between each test, the insulation tester needs to have
a 5-minute break.
9.5 Low Ohms Measurement 0 - 3Ω
Always check for voltage before testing and measuring on a
circuit. This instrument is intended for measuring Low Ω and
Insulation resistance on unenergized circuits only.
Use the procedure explained at points 9.2, 9.3, 9.4.
The first procedure to follow, is to zero the test leads and the
fuse resistance. The instrument is equipped with a Zero Ω Knob.
First, short circuit the test leads by connecting them together,
then, press the test button and adjust the zero Ω knob until the
pointer is precisely on the "0" of the 3Ω scale. Use the mirror
scale to be precise with the pointer.
Connect the test leads to the circuit to be measured. For short
test, press button and keep pressed. For long test or hand free
measurements, press and turn the test button.
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