ACD-330T Amprobe, ACD-330T Datasheet - Page 29

• Manufacturer Part Number: ACD-330T
• Description: DMM CLAMP-ON W/BACKLIGHT
• Manufacturer: Amprobe
• Type: Digital (DMM)r

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
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