TORQ Corporation
TORQ Corporation
32 West Monroe Ave.,
Bedford, OH
Phone: 440-232-4100
Fax: 440-232-4104
Email: info@torq.com
Website: www.torq.com
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Bidirectional motors - those that can rotate in either direction – are of two classes: 1. Reversing motors , which can change from full speed in one direction to full speed in the opposite direction. 2. Reversible motors , which can be reversed only when the motor is not running, or is running below cut out speed. Some motor manufacturers distinguish between quick reversing and instant reversing. A quick reversing motor requires a time delay of approximately 1/25th of a second or more for the switching circuitry to react. An instant reversing motor requires absolutely no time delay. The standard SINPAC Switch can be used on reversible and reversing motors. The SINPAC IR Series Switch provides the function of a direction sensing centrifugal switch and makes a reversible capacitor start motor into an instant reversing motor.

In order to reverse a single-phase motor, it is necessary to reverse the polarity of either the start or main winding, but not both at the same time. The reversal of the winding is accomplished with an external reversing switch or contactor that is not part of the SINPAC Switch. SINPAC Instant Reverse Switch is not dependent upon how quickly the user operates the reversing switch, but only that the reversing switch did change states, i.e., forward to reverse, or vice versa. The SINPAC Switch detects the change in the phase shift between the main and start windings, and the logic circuit instantly actuates the starting switch, causing the start circuit to be reconnected to line voltage. This connection causes the motor to decelerate and then reaccelerate in the opposite direction. The SINPAC IR Series Switch interrupts the start circuit current after the motor has accelerated to the cut out speed, and reconnects the start circuit whenever the circuit senses the motor speed has fallen to cut in speed (usually about 50% of synchronous motor speed).
Unit of Measure

Specifications

Typical Maximum Motor HP

 N/A 0.5

Typical Full Load Motor Nameplate Current rating @ 115V

 N/A 12 A

Typical Full Load Motor Nameplate Current rating @ 230V

 N/A 6 A

Switch Rating and Permissible Maximum Start Winding Current

 N/A 25 A

Start Winding Voltage

 N/A 115 V

Kit Part Number

 N/A 4-7-51025-15-UA1

Cut-out Voltage

 N/A 130 V

Cut-in Voltage

 N/A 30 V

Package Style

 N/A 15

Manufacturer

 N/A Stearns® SINPAC®

Additional Features

Additional Features

 N/A
  • UL recognition and CSA certification.
  • Completely solid-state with no moving parts. SINPAC Switches have no physical constraints to affect their operation. No wearing parts mean high cycling, no arcing contact. Low warranty
  • Silent operation - no switch noise
  • Operating Temperature: -40°C to 65 °C (-40 °F to 149°F) [for operation between 65°C and 85°C (149°F and 185°F), consult factory.]
  • Operating Voltage: 115 Vac SINPAC Switch: 90-130 Vac. For dual voltage motor equipped with center-tapped main winding: 90-130 Vac or 180-265 Vac.