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jack of I1 in front and the 2 black and red test lines with the voltage input jack of U2,
and then connect the clamp and test line with the I1 and U2 circuits; the result
indicates the phase between the current and voltage.
5． AC Current, Leakage Current Measurement
Point the rotary switch to the 10A range of I1, connect 1 current clamp to the input
I1 current jack in front, and then connect the current clamp with the measured circuit; the
result indicates the current or leakage current of the measured circuit. If the measured
current is relatively lower, just choose lower range and try again, so as to improving the
accuracy. Or point the rotary switch to the appropriate range of I2 and test the current or
leakage current with I2.Please note that the I1 and I2 pointed to by the switch must
correspond to the I1 and I2 input jacks on the clamp.
6．AC Voltage Measurement
Point the rotary switch to the 500V range of U1, connect 2 black and red test lines with
the U1 voltage input jack, and then connect the test line with the measured circuit; the
result indicates the current or leakage current of the measured circuit. If the measured
voltage is relatively lower, just choose lower range and try again, so as to improving the
accuracy. Or point the rotary switch to the appropriate range of U2 and test the voltage
with U2.Please note that the U1 and U2 pointed to by the switch must correspond to the
U1 and U2 input voltage jacks.
7．Inductive, Capacitive Circuit Judgment
Point the rotary switch to U112, input the circuit voltage into the U1 jack and the circuit
current into the I2 jack, if the phase is displayed as between 0° and 90°, the measured
load is inductive, if the phase is displayed as between 270° and 360°, the measured load
is capacitive.
8．Three-phase Voltage Phase Sequence Measurement
（1）Phase Sequence Discrimination of Three-phase Three-wire System
Point the rotary switch to U1U2, use test lines to connect the A phase with the red
U1 jack, the B phase with the black U1 and U2 jacks, and the C phase with the red U2
jack. If the measured phase value of is 300°, it’s a positive phase sequence; if the
measured phase is 60°,it’s a negative phase sequence.
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