User manual
EX65x‐en‐US_V1.5 12/15
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TIME
CURRENT
0A
Start Stop
Current
Detection
Threshold
Measured Inrush
Current
100ms Sample Window (60Hz)
ExtendedFunctionalityModes
In addition to the basic measurements, a variety of extended functions are included. Refer to
the following sections for details.
InrushCurrentMode(EX655only)
In Inrush current mode, the meter displays the RMS AC current reading in the first 100ms
period after the trigger point (current detection threshold) is reached, see Fig. 5.3 below.
The current detection threshold is 5.0A for the 600.0A range. Inrush current mode is
available when measuring AC current.
1. Connect the meter clamp to the unpowered circuit under test.
2. Set the meter to the position.
3. Use the MODE button to select AC.
4. Press and hold the INRUSH button to enable the Inrush current mode. The word
RUSH will display briefly in the area of the display where the readings are shown.
The icon SURGE will appear on the lower portion of the LCD while in this mode.
5. Turn on the power to the circuit under test.
6. When the threshold is reached, the meter will display the RMS reading for the
100ms integration time.
7. To exit the Inrush mode, press and hold the INRUSH button until the SURGE display
icon switches off.
Note: Inrush measurement accuracy is not specified; Inrush measurements are offered
for reference purposes only.
Figure4‐12Inrush Current