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The following points should be considered when wiring Phase Perfect
as a motor
starter to power a single motor:
1. Verify that no power is provided to Phase Perfect
.
2. Remove the front panel to gain access to the wiring terminals. See
section 2.2.1, “Wiring to Phase Perfect
Terminals,” for an illustration.
3. Verify that control terminals A and B are shorted together. Phase
Perfect
is shipped from the factory in this configuration. When
contacts A and B are shorted together the optional motor protection
unit is enabled, and Phase Perfect is configured as a motor starter.
4. Wire Phase Perfect
to the motor as illustrated above. Three-phase
output power wire connections are made to the T1, T2, and T3 output
terminals, and secured with the terminal block screws.
5. Set the motor protection unit to the desired settings:
a. Adjust the trip current to the appropriate current for the motor load
being powered. The trip rating is 120% of the dial setting.
b. Set the overload relay to auto or manual reset as desired. For auto
reset, push and turn the reset button clockwise to the Auto
position. The button will remain depressed.
DANGER: In this
position the relay will reset automatically approximately two
minutes after tripping, providing power to the load without
warning.
For manual reset, push and turn the reset button to the
manual position. In this position pushing the button in resets the
overload relay. Additional information on the motor protection unit
is provided in Section 4., “Motor Protection Unit.”
6. Wire power into Phase Perfect
from an appropriate 208 V or 240 V
circuit. See section 2.2.1.2, “Input Wiring Considerations,” for
additional information.
7. Re-attach the front panel.
8. Provide power to Phase Perfect
from the fusible disconnect.
Power
will be provided to the motor after a delay of approximately five to
eight seconds.
Check the motor for correct rotation. If the motor
rotation is incorrect, reverse any two of the three output power leads
T1, T2, and T3.
9.
Note: A low power remote switch can be wired into Phase Perfect
to
control the motor as described in the following section, “Control Circuit
Configuration.”
2.2.2.2
MOTOR STARTER WITH REMOTE ON/OFF CONTROL
Phase Perfect
can be used to power individual pumps or single-motor loads
which are automatically switched ON and OFF by a remote switch such as a
pressure switch or level switch with at least a 240 VAC, 0.5 amp rating. This
feature can eliminate the need for an external three-phase starter panel to control
the load. Phase Perfect
incorporates a contactor and adjustable overload relay,
and when combined with a field installed fusible disconnect provides the
necessary components of a motor starter.
The built-in overload relay can be
adjusted for a wide range of motor HP ratings. The installation is similar to the
