ACD-330T Amprobe, ACD-330T Datasheet - Page 27

• 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

controllers. The output current frequency is used to calculate the rotating speed of the
motor, while input current frequency is used to measure the frequency of the power line.
The frequency of the output current is important because the voltage frequency is often
meaningless for the calculations of motor controller speed.
1) Set the rotary switch to " A ".
Be sure the clamp jaws are securely closed, or measurements will not be accurate.
3) Observe the display for true RMS current.
4) Measure an output phase of the motor controller and press Hz button momentarily to
enter dual display mode. Then you will see the frequency reading be shown on small dig-
5) Press the MAX • MIN button for more than 1 second to record readings. To view read-
6) Press the MAX • MIN button for more than 1 second to exit recording.
You can measure input current, output current and frequency of adjustable speed motor
2) Clamp around an input or output phase (as required), and run motor at desired speed.
its. Nominal motor speed is calculated formula is shown below:
ings, momentarily press MAX • MIN button.
ADJUSTABLE SPEED MOTOR CONTROLLERS
RPM = 120 F/P
F: measured frequency.
P: number of pairs of motor poles
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