KYORITSU 3127 - Manual (Page 17)

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6. Measurement
6-1 Mains disconnection check (Voltage measurement)
# DANGER
● Do not make measurement on a circuit in which the electric potential
exceeds 600V (voltage to ground) in order to avoid getting electrical shock.
In addition, do not use this instrument when the voltage to ground is 600V or
higher even the line voltage is 600V or less.
● Ensure that a measurement is performed at the secondary side of the circuit
breaker when testing the voltages of power lines, which has a large current
capacity, in order to avoid possible hazard to the user.
● Extra precaution shall be taken to minimize the possibility of shorting the
power line with the metal tip of test lead at voltage measurement. It may
cause personal injury.
● Do not start a measurement with the battery cover removed.
● Connect the Earth cord (black) to the Earth terminal of the circuit under test.
Set the Rage switch to any position other than“OFF”position.
Press the MODE button(
) and select“VOLT”mode.
No need to press the Test button.
KEW3127 has an AC/DC auto-detect circuit and can measure DC voltage as well.
At DC voltage measurement, when applying positive voltage to the Line Probe
(red), positive value is displayed on the LCD.
Ensure that the circuit breaker of the circuit under test is turned off.
(1) Connect the Earth Cord (black) to the earth side of the circuit under test and
the Line Probe (red) to the line side respectively.
(2) Confirm that the voltage displayed on the LCD is “Lo”. If the display doesn’t
show “Lo”, voltage is applied on the circuit under test. Check the circuit
under test again and turn off the circuit breaker.