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The following points describe adjustment and features of the motor protection
unit.
Remember, the motor protection unit is bypassed in the power supply
mode by shorting control terminals B and C together in the wiring cavity.
1.
TRIP CURRENT ADJUSTMENT BUTTON
—Used to adjust the current trip
limit when Phase Perfect
is used as a motor starter in the motor starter
configuration. To adjust the trip current, turn the dial until the desired current
is aligned with the pointer. The trip rating is 120% of the dial setting.
2.
MANUAL/AUTO RESET BUTTON
—Used to control automatic and manual
reset features of the overload relay, and to reset the motor protection unit if it
trips out. The unit is shipped from the factory in the manual mode. Automatic
reset of the overload relay is often desirable when Phase Perfect is located at
remote locations such as a pumping shed. Manual reset is typically used
when the Phase Perfect unit is readily accessible, such as in a machine shop.
a.
For auto reset, push and turn the reset button clockwise to the Auto
position. The button will remain in the IN position. The unit will reset
automatically approximately two minutes after tripping.
ATTENTION: Do
not use the automatic reset mode in applications where unexpected
automatic restart of the motor can cause injury to persons or
damage to equipment.
b. For manual reset push and turn the reset button to the Manual position. In
this position pushing the button in resets the overload relay.
c. To manually trip the overload relay, push and turn the button
counterclockwise to the trip position. Releasing the button reverts the unit
to the manual position.
d. To reset the overload relay push the button.
OVERLOAD RELAY
OVERLOAD RELAY
INPUT POWER SECURE
SCREWS
PUSH TO TEST
BUTTON
TRIP CURRENT
ADJUSTMENT KNOB
MANUAL/AUTO
RESET BUTTON
TRIP WINDOW
CONTACT MODE
SCREWS
OVERLOAD RELAY
OUTPUT POWER
SECURE SCREWS
