UNI-T UT202A, Руководство по эксплуатации

Страница: 17 / 25

18 17
UT202A Operating Manual
F. AC Current Measurement (see figure 8)
Warning
To avoid electric shock, never measure current
while the test leads are inserted into the input
terminals and disconnect test leads and tested
circuit connection.
Never attempt an in-circuit current measuremnet
where the open-circuit voltage between the
circuit and the ground is greater than 600V
User proper function, and range for the
measurement.
To measure current, do the following:
1. Set the rotary switch to 20A ,200 A or
600 A .
2. Press the lever to open the transformer jaws.
3. Center the conductor within the transformer
jaw, then release the Meter slowly until the
trasnformer jaw is completely closed, Make
sure the conductor to be tested is placed
at the center of the transformer jaw,
otherwise it will casue deviation. The Meter
can only measure one conductor at a time,
to meausre more than one condutor at a
time will cause deviation.
Note:
When current measurement has been
completed,disconnect the connection between
the conductor under test and the jaw, and
remove the conductor away from the
transformer jaw of the Meter.