Inrush; Low Battery Indicators - Fluke 381 User Manual

Remote display true-rms clamp meter

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Inrush

Inrush Current is surge current that occurs when an electrical device is first powered on. The

Meter can capture this surge current reading. Current spikes from motor drives are one example

of such an event. The Inrush function takes approximately 400 samples over a 100 ms period and

calculates the starting current envelope.

The Meter uses two low battery symbols: Band Q. When B

appears, the batteries in the Meter base should be changed. Low batteries on the Meter base will

affect the readings. When Q is displayed, the batteries for the removable display

should be changed. Measurements are not affected by low batteries in the display.

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