Operation - Greenlee 5124 Manuel D'instructions

Operation

Determining Phase Sequence (Contact Type)
a. Insert the test leads (L1, L2, L3) into the corresponding input terminals of the 5124 (R, S, T respectively)
and then to the alligator clips.
b. Connect the alligator clips in L1, L2, and L3 order to the three phases of the system.
c. Press down the "ON" button and the 5124 power indicator will illuminate. Press and hold the "ON"
button to conduct the test. During the test, the "Clockwise" (R) or "Counter Clockwise" (L) rotation
indicator will illuminate to indicate whether the system is under a "Positive" or "Negative" phase
sequence.
Checking Rotary Field (Motor Rotation, Non-Contact Type)
a. Remove all test leads from the 5124.
b. Place the 5124 towards the motor, in parallel with motor shaft. The bottom of the instrument should
face
the shaft. The 5124 should be oriented such that it is opposite the front of the motor as shown in
Figure 2. The motor location indicator is also shown on Figure 1.
c. Press the "ON" button and the power indicator will illuminate and the test will begin. While the motor
is running, the "Clockwise" (R) or "Counter clockwise" (L) will illuminate indicating the direction of
rotation of the motor.
Note: This non-contact test is applicable for both single-phase
and three-phase motors. The instrument will be unable
to indicate accurately with motors controlled by a
frequency converter.
Detecting Magnetic Field
Place the 5124 into a location with suspected magnetic field.
If either the "Clockwise" (R) or "Counter clockwise" (L) indicators
illuminate while the "ON" button is pressed, then magnetic field
exists in the location.
6
R LED indicator is on when the motor
rotates clockwise
Figure 2