UNI-T UT60B Operating Manual page 23

Measurement Operation (10)
The current measurement has 3 measurement positions on the
rotary switch: A
The A has a 400.0 A and 4000 A range, with auto ranging;
the mA has a 40.00mA and 400.0mA range, with auto
ranging; A position has a 4.000A and 10.00A range, with
auto ranging.
To measure current, do the following:
1. Turn off power to the circuit. Discharge all high-voltage
capacitors.
2. Model UT60C/UT60E: Insert the red test lead into the
o
or 10A terminal and the black test lead into the
C
COM terminal.
Model UT60B:Insert the red test lead into the
10A terminal and the black test lead into the COM terminal.
Use the10A terminal and A range if the current value to
be tested is an unknown.
3. Set the rotary switch to µA , mA , or A
4. The Meter defaults to DC current measurement mode. To
toggle between DC and AC current measurement function,
press BLUE button.
Model UT60B/UT60C: AC current is displayed as effective
value of sine wave (mean value response).
Model UT60E : AC current is displayed as true rms value.
5. Break the current path to be tested. Connect the red test lead
to the more positive side of the break and the black test lead
to the more negative side of the break.
6. Turn on power to the circuit.
The measured value shows on the display.
Note
l True root mean square value stability period: (Model
UT60E)
When the reading obtained is less than 100 digits, the true
root mean square value converter needs a longer time to
stabilize. When there is no input voltage, the maximum reading
displayed is 10 digits.
l For safety sake, each measurement time for high current
should be less than 10 seconds and the interval time between
2 measurements should be greater than 15 minutes.
l When current measurement has been completed, disconnect
the connection between the testing leads and the circuit under
test, and remove the testing leads away from the input
terminals of the Meter.
Model UT60B/C/E: OPERATING MANUAL
, mA
and A .
23
or
.