EXTECH INSTRUMENTS
7
MA610-en-GB_V1.0 12/16
AC Current Measurements
WARNING: Do not handle the meter above the finger/hand guard barrier.
CAUTION: Observe CAT III 600V with respect to Earth Ground for the Jaw.
1.
Rotate the function switch to the desired AC Current position (4A, 40A, or 600A).
Start with the highest range setting (600A) and step down to lower ranges as needed,
especially for signals that are of an unknown range.
2.
The A and the AC symbols will appear on the display indicating AC Amperes (Amps).
3.
Press the jaw trigger to open the clamp jaw.
4.
Position the clamp around only one conductor. See Fig. 2 for correct and incorrect clamp
technique.
5.
Read the current in the display. The display will indicate the proper decimal point and
value.
NOTES:
To ensure maximum accuracy, place the conductor at the center of the clamp head, otherwise
additional error (± 1.0%) may apply.
Fig. 2 – Correct and Incorrect ACA Clamping
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