20
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2.2 Current Measurement
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Current direction
Measured conductor
Current direction
indicator
Wrong
NOTE
When 0 is displayed after zero adjustment, the
measurement can be performed without the
interference of the count remaining immediately after
the power is turned on.
4. Open the top ends of the clamp core, orient the
current direction indicator on the clamp in the
current direction of the measured conductor, and
clamp the conductor so that it passes through the
center of the clamp core.
The DC A mode permits only DC current
measurements that does not include the AC
component (See 1.5: Modes).
The 200 A range will display up to 250 A, however,
only the range from 10 A to 200 A can be displayed
with guaranteed accuracy.
At any range, gross errors may occur at 1% or
below of the range, whose accuracy is not
guaranteed, as a result of internal corrective
calculations.
The value may sometimes not show 0 when the
power is switched on, but this is not an instrument
fault. Please execute auto zero adjustment before
measuring.
Summary of Contents for 3285-20
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