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2.1 Before Measurement
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A
DANGER
Do not exceed the maximum input voltage and current. Doing so can
damage the unit or cause a serious accident.
The maximum rated voltage between input terminals and ground is
600 Vrms. Attempting to measure voltages exceeding 600 Vrms with
respect to ground could damage the instrument and result in
personal injury.
Always connect the powermeter input to the secondary side of the
breaker. On the secondary side of a breaker, even if the lines are
shorted the breaker can trip and prevent an accident. On the
primary side, however, the current capacity may be large, and in the
event of a short-circuit there may be a serious accident.
To avoid electric shock accidents, do not touch the input terminals
of the unit on live lines, which is exposed.
WARNING
In order to prevent electric shock and short-circuit accidents, shut
off the power to the line to be measured before connecting the
direct connection voltage and current cables to the terminals.
Be sure to connect the voltage input terminals or current input terminals
correctly. Measurement which is attempted with the wiring connected
incorrectly may cause damage to the unit or a short-circuit.
If an attempt is made to use an improper supply voltage, there is
danger of damage to this unit and of life-threatening risk to the
operator.
Before turning on the power, make sure that the voltage of the power
supply being used matches the supply voltage indicated on the rear
panel of the unit.
The unit is constructed so as to be connected to a ground line via a
three-core power cord that is supplied with the unit. In order to
avoid electric shock, connect the unit to a properly grounded (3-pin)
outlet using the power cord provided.
Chapter 2
Preparation for Measurement
2.1 Before Measurement
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