ACD-330T Amprobe, ACD-330T Datasheet - Page 29
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ACD-330T
Manufacturer Part Number
ACD-330T
Description
DMM CLAMP-ON W/BACKLIGHT
Manufacturer
Amprobe
Type
Digital (DMM)r
Datasheet
1.ACD-330T.pdf
(42 pages)
Specifications of ACD-330T
Includes
Battery, Case, Test Leads
Style
Clamp
Display Digits
4
Display Type
LCD, Bar Graph
Function
Voltage, Current, Resistance, Frequency
Functions, Extra
Continuity, Diode Test
Features
Auto Off, Backlight, Hold, Min/Max/Ave
Ranging
Auto/Manual
Response
True RMS
Lead Free Status / RoHS Status
Contains lead / RoHS compliant by exemption
Display Count
-
Other names
2730749
You can measure starting (inrush) current, running current, and current imbalance in
AC Motor circuits. Inrush current is typically 6-8 times the value of running current,
depending on the motor type.
1) Set the rotary switch to " A ".
2) Press and hold the PEAK button (>lsec) to enter 1 ms PEAK hold mode.
or measurement will not be accurate.
5) Turn the motor on. When the motor gets to the desired speed, observe the display for
inrush current reading.
6) If the reading is " OL", you can push the RANGE button momentarily to change meas-
or a shorted motor winding may cause imbalanced current.
3) Clamp around a motor phase conductor. Be sure the clamp jaws are completely closed,
4) Press ZERO button to set the display to zero.
uring range. Turn off the motor.
7) Repeat your measurement from step 2 through 6 for each phase. A voltage imbalance
AC MOTOR CURRENTMEASUREMENT
25