30
IM 702915-01EN
Measurement Method
CAUTION
• The continuous maximum input range is a value defined
based on the temperature increase due to self-heating during
measurement. Do not apply current outside this range. Doing
so can damage the instrument.
• The continuous maximum input range varies depending
on the frequency of the measured current. See the product
specifications.
• If current exceeding the continuous maximum input range is
applied, the internal protection function will be activated as a
result of the heat generated by the sensor, and the probe will
not output correct values. If this happens, immediately remove
the input (remove the sensor head from the conductor or
reduce the input current to zero). Adequate cooling period will
be required until the probe can output correct values again.
• In a high temperature environment, the internal overcurrent
protection circuit may be activated even at currents within the
continuous maximum input range.
• If current exceeding the continuous maximum input range is
applied continuously or if the protection function is activated
frequently, the instrument may break.
• In addition to the continuous maximum input range, the
product specifications that indicate maximum input range
include “discontinuous maximum peak current.” This signifies
that the upper limit of waveform response is maximum peak
current. Use the probe in a way that the rms value does not
exceed the continuous maximum input range.
• Be sure to use the opening lever to open the upper jaw.
Pressing the top core when the upper jaw is locked will
damage the clamping mechanism.
3. Operation Procedure
