27
3.10 STARTING CURRENT OR OVERCURRENT (True InRush
®
)
MEASUREMENT
NOTE:
The measurement can be made only in AC or DC mode (AC+DC mode
disabled).
To measure a starting current or overcurrent, proceed as follows:
1. Set the switch to
, correct the DC zero (see §3.9.2), then clamp the
jaws around the conductor to be measured.
2. Perform a long press on the
button. The
InRh
symbol is
displayed, along with the triggering threshold. The clamp then awaits
detection of the True InRush
®
current. "------" is displayed and the A
symbol flashes.
3. After detection and acquisition for 100 ms, the RMS value of the True
InRush
®
current is displayed. Pressing the
button will display the
PEAK+/PEAK- values subsequently.
4. A long press on the
button or a change of function on the rotary
switch will exit the True InRush
®
mode.
NOTE:
The triggering threshold in A is 10A if the initial current is zero (starting of
installation). For an established current (overload in an installation) see §3.4.3.
Summary of Contents for 205
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