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CAUTION
● Transformers jaws , especially their tips, have been precisely
adjusted to obtain maximum accuracy. Take sufficient care to
avoid shock, vibration or excessive force when handing the
instrument.
● When a foreign substance is stick in the jaw tips or they cannot
properly engage, the transformer jaws do not fully close. In such
a case, do not release the jaw trigger suddenly or attempt to
close the transformer jaws by applying external force. Make
sure that the jaws close by themselves after removing the
foreign substance or making them free to move.
● The maximum size of conductor that can be measured is
approx. 68mm in diameter. An accurate measurement cannot be
made on a conductor larger than this, because the transformer
jaws cannot be fully closed.
● Frequency selector switch ⑨ is designed to select
the “50/60Hz” and “WIDE” frequency ranges. For further
details, refer to section 5-4 for operation of the frequency
selector switch.
● The transformer jaws may buzz when measuring large current.
This has no effect on the instrument's performance or safety.
(1) Set the function/range switch to the desired position. Do not exceed
the maximum allowable input current for the selected range.
(2) For normal measurement, press the jaw trigger to open the
transformer jaws and clamp onto one conductor only. See Fig.3.
Earth leakage current or small current that flow through a
grounded wire can also be measured by this method. (Fig. 4)
(3) To measure out of balance leakage current, clamp onto all
conductors except a grounded wire. The leakage current measure
will be indication on the display. (Fig.5)
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