Determination Of The Rotary Field - BEHA UNITEST DR100 Instruction Manual

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.
The rotary field indicator UNITEST DR 100 check the pres-
ence of all three phases an indicates the phase sequence
direction.
Connection of Rotary Field Indicator:
If the indication isn't clear or differs from the table, the
connection must be checked.
For phase sequence determination connect the three
clamps L1, L2, L3 in any order to the three phase
system.
Glow lamp (4) is illuminated for a clockwise rotary
field.
Glow lamp (3) is illuminated, exchange two connec-
tions.
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