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Typical Measurements
Phase Rotation Test
Rotary Phase of a Three-Phase Mains
Right Rotary Field
Left Rotary Field
In three-phase electrical systems, the phases are
separated by 120 degrees of phase shift. The first phase is
the reference phase; the second phase lags the first by 120
degrees; the third lags the second by 120 degrees.
Three-Phase Voltage Waves
A
B
C
120°
240°
360°
10
Grasp
firmly
Grasp
firmly
B
C
A
A
B
C
GT-55e
GT-85e
GT-55e
GT-85e
B
C
A
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