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6. Measurement
6-1 Mains disconnection check (Voltage measurement)
# DANGER
● N ever make measurements under the circumstances
exceeding the designed measurement category and the
rated voltage of the instrument and the test leads.
● W hen testing installations which have large current
capacities, such as a power line, be sure to make
measurement on the secondary side of the circuit breaker
in order to avoid getting an electrical shock.
● E xtra caution should be taken to minimize the possibilities
of shorting the power line with the metal tip of test lead at
voltage measurement. It may cause personal injury.
● T he Battery cover must be closed and screwed before
starting a measurement.
● C onnect the Earth cord (black) to the Earth terminal of the
circuit under test.
● K eep your fingers and hands behind the protective
fingerguard during measurement.
Voltage can be measured by setting the Range switch on this
instrument to V
position. No need to press the Test
AC/DC
button. This instrument is equipped with an AC/DC auto-
detection circuit and can measure DC voltage. During a DC
voltage measurement, when applying a positive voltage to the
Line Probe (red), positive values are displayed on the LCD.
Be sure to turn off the circuit breaker of the circuit under test.
(1) C onnect the Earth Cord (black) to the earth side of
the circuit under test and the
Line Probe (red) to the line side
respectively.
(2) T he voltage displayed on the
LCD shall be Lo . If it is not
Lo , a voltage is applied on
the circuit under test. Check
the circuit under test again and
turn off the circuit breaker.
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