Determination Of Phase Rotation - Unitest UNIdreh 700 Instruction Manual

Determination of the Rotary Field
5.0 Determination of the Rotary Field
The phase sequence of the three phases present deter-
mines the rotary direction of the motor connected.
The correct phase sequence L1, L2, L3 results in a
clockwise rotation.
For phase sequence determination connect the three
clamps L1, L2, L3 in any order to the three phase sys-
tem.
LED/LCD-Segment (3) is illuminated for a clockwise
rotary field.
If LED/LCD-Segment (2) is illuminated, exchange two
connections.
Please also refer to table at the backside of the unit
Correct phase sequence is displayed even if neutral N
is connected instead of L1, L2 or L3. Correct phase
connection has to be verified by two-pole voltage
test.
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