Hioki 3181-01, Instruction Manual

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Chapter 4 Names and Functions of Parts
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Fuse holder
The 3181-01 requires a fuse with ratings of 250 V and 3 A.
The 3181-01 power cord must be removed from the socket
before replacing the fuse.
(Refer to Section 7.2, "Fuse
Replacement.")
Voltage selector
This is used to select the line voltage for the 3181-01.
Ensure that the number indicating the line voltage
selection is aligned with the arrow (
↑ ) below the selector
switch.
AC inlet
This inlet is used to apply line power to the instrument
using the accessory power cord.
A line filter and a fuse
are built in.
Measuring terminal
These terminals are used to make connection between the
power line and the equipment being measured.
When
making connections, always use conductors which have
sufficient current carrying capacity, tighten them securely
and be careful to avoid looseness and shorts.
External control terminal ［ EXT.CONTROL ］
Leave this terminal open (or at Hi level: 5 V) during
normal operation. It is closed (or at Lo level: 0 V) during
integration to obtain the watthour value for the specified
time period.
As soon as this terminal is closed, the
instrument goes directly into operation as if the
START
switch had been pressed. That is, the integration value
accumulated up to that moment is cleared and integration
is begun anew.
If the external control terminal is opened
during integration, the instrument behaves just as if the
HOLD/RUN
switch had been pressed and the accumulated
integration value is displayed. (Refer to Section 6.4,
"External Control Terminal.")