Amprobe AMP-210, Руководство пользователя

Страница: 18 / 26

14
Measuring & 3-Phase Rotation
Measurement is made through the Meter’s terminals L1/L2/L3. Phase
Rotation directions are indicated as symbolic (LCD segments) movements on
the display. Default mode at
. Press SELECT button to toggle between
and modes.
: Hi-sensitivity mode for checking phase rotation of Motors detects
relatively low signal outputs generated spinning a motor shaft,.
: Normal-sensitivity mode for identifying phase sequence of 3-phase
MAINS supply.
W Caution
Correct rotation detection relies on solid signal connection to all three test
lead terminals simultaneously. Any loose connection will lead to detection
failure and false indication. To verify signal connection and the correct
rotation indication, swap any of two signal connections l to check for
indication of reverse movement.
Hi-sensitivity mode for Motors:
Connect the test lead L1/L2/L3 to the motor connections by using probes
and/or alligator clips. Be sure the power supply is removed from the motor.
From the perspective of looking down the shaft of the motor, speedspin
it clockwise to generate sufficient signal strength for rotary detection. If
the meter indicates a clockwise movement, the motor leads connected to
L1, L2 and L3 of the meter are L1, L2 and L3 (also known as R, S and T),
respectively. If the meter indicates a counter-clockwise movement, swap any
of two motor connections and retest.