1)
Turn off power to the circuit. Discharge all
High - Voltage capacitors.
2)
Insert the red test lead into the mA or 20A
terminal and the black test lead into the
COM
terminal
3)
Set the rotary switch to an appropriate
measurement position in Current range.
4)
Break the current path to be tested. Connect the
red test lead to the positive side of the path and
the black test lead to the negative side of the
path.
5)
Turn on power to the circuit.
The measured value is shown on the display.
Caution
n
If the value of current to be measured is
unknown, use the maximum measurement
position (20A) and 20A terminal, and reduce the
range step by step until a satisfactory reading is
obtained.
n
When current measurement has been
completed, disconnect the connection between
the testing leads and the circuit under test.
D. DC Current Measurement
(see figure 6)
16
(figure 6)
Supply
Load
COM
V
W
Hz
20A
mA
NPN
B
B
E
E
E
PNP
E
C
C
20A 10SEC
MAX UNFUSED
200mA MAX FUSED
1000V DC
750V AC
MAX
!
!
!
KM-6030
C. AC Current Measurement
(see figure 5)
Warning :
Never attempt an in - circuit current measurement
where the open circuit voltage between terminals and
ground is greater than 60V DC or 30V rms. If the fuse
burns out during measurement, the Meter may be
damaged or the operator himself may be hurt. Use
proper terminals, function, and range for the
measurement. When the testing leads are connected
to the current terminals, do not parallel them across
any circuit.
The AC current measurement has 4 measurement
positions on the rotary switch : 2mA, 20mA, 200mA,
20A.
To measure AC Current, connect the meter as
follows :
!
n
When AC Voltage measurement has been
completed, disconnect the connection between
the testing leads and the circuit under test.
15
(figure 5)
Supply
Load
COM
V
W
Hz
20A
mA
NPN
B
B
E
E
E
PNP
E
C
C
20A 10SEC
MAX UNFUSED
200mA MAX FUSED
1000V DC
750V AC
MAX
!
!
!
KM-6030