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The test line must removed form the measured line before
being pulled out from the instrument.
4． Phase Measurement
Phase Test relationship of the instrument: U1U2, I1I2, U1I2,
I1U2, for every relationship the measured phase shows signal
1 ahead of signal 2.
The red U1 and U2 voltage jacks and the red dot marks or
arrow symbols on the clamp are dotted terminals
In phase test the direction of the input current should be in line
with the arrow symbol on the clamp
The phase relationship of three-phase line could be tested in
doubles.
（1）U1U2 Phase Test
Point the rotary switch to U1U2, connect the 4 black and red test lines with the
voltage input jacks of U1 and U2, and then connect the test lines with the U1 and U2
circuits; the result indicates the phase between the two circuits, namely the phase
angle between U1 and U2.
In U1U2 phase test, the two input circuits are fully isolated by insulation to avoid
short-circuit burning off caused by incorrect wiring.
（2）I1I2 Phase Test
Point the rotary switch to I1I2, connect the 2 current clamps to the current input
jacks of I1 and I2, and then connect the clamps with the I1 and I2 circuits; the result
indicates the phase between the two currents.
（3）U1I2 Phase Test
Point the rotary switch to U1I2, connect the 2 black and red test lines with the
voltage input jack of U1 and the current clamp with the current input jack of I2 in front;
then connect the test lines with the U1 and I2 circuits; the result indicates the phase
between the voltage and current.
（4）I1U2 Phase Test
Point the rotary switch to I1U2, connect the current clamp with the current input
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