Sinpac Switch Manual
The SINPAC Switch interrupts the start capacitor current (between terminals 2 and 3) after the motor has accelerated to a speed in which the cut out voltage has been reached, generally 75% to 80% of synchronous motor speed. Stearns SINPAC Switch Catalog IR-25-165 Part 4-7-51025-15-U01 New Part. 472104011UA3 Stearns SINPAC Electronic Start Switch, 115V, 40A, 130V Cutout by Stearns SINPAC.
Motor and Switch Replacement Parts – Bedford, Ohio – Torq Corporation Providing Solutions in centrifugal Speed Switching for Over 65 years MADE IN THE U.S.A. 440.232.4100 email:. Motor and Switch Replacement Parts You will find the largest selection of centrifugal switch and stationary switch components for repair of single-phase electric motors in the TORQ Corporation Catalog. Orders received by 2 p.m. EST are shipped the same day. All TORQ Syncrosnap® centrifugal switches are made in the USA. You can repair motors with confidence using a TORQ centrifugal switch.
Centrifugal Mechanisms TORQ SYNCROSNAP® CENTRIFUGALS TORQ SYNCROSNAP® FIGURE A NOTE: Shaft diameter code is stamped on side of metal plate facing weights. TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configuration making it unnecessary to match the number of weights. TORQ SYNCROSNAP® FIGURE D NOTE: Shaft diameter code is stamped on side of metal plate facing weights. TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configuration making it unnecessary to match the number of weights. TORQ SYNCROSNAP® FIGURE B NOTE: Face spool toward you and look for shaft diameter code on metal ring which presses on shaft.
TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configurement making it unnecessary to match the number of weights. TORQ SYNCROSNAP® FIGURE E NOTE: Shaft diameter code is stamped on side of metal plate facing weights. TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configuration making it unnecessary to match the number of weights.
COIL SPRING FIGURE C NOTE: This coil spring type mechanism used by various motor manufacturers is not manufactured by TORO. It can be replaced by a TORQ Syncrosnap® mechanism for certain applications as shown in the tables. TORO replacement will look like Figure A. FRANKLIN FIGURE F NOTE: This coil spring type mechanism used by Franklin for some appliactions is not manufactured by TORQ.
It can be replaced by the TORO Syncrosnap8 mechanism for certan applications as shown in the tables. TORQ replacement centrifugal will look like Figure A. TORQ SYNCROSNAP® CENTRIFUGALS - 60 HERTZ (USA) HOW TO USE THIS SECTION This section lists available centrifugals by:. MOTOR MANUFACTURER listed alphabetically. BORE SIZE listed in ascending order under each manufacturer IF YOU DO NOT KNOW THE MANUFACTURER, MEASURE THE BACKPLATE O.D.
AND SORT BY BORE SIZE. Refer to the motor name plate to obtain the manufacturer's name, frequency (hertz), and speed/RPM (poles) of the motor. Use the chart below for typical motor speed ranges.
Basic Operation Capacitor start motor require a method to extract speed data from the voltage across the motor start winding. By comparing the start winding RPM-sensitive voltage with the main AC input voltage (which serves as a reference voltage), the switch determines when the start circuit should be energized. The electronic switch interrupts the start circuit current after the motor has accelerated to the cut out speed, and reconnects the start circuit whenever the motor speed has fallen to cut in speed (usually about 50% of synchronous motor speed). Basic Operation Capacitor start/capacitor run motors and capacitor start motors provide continuous voltage sensing information which can be used to extract speed data from the voltage across the motor start (auxiliary) winding. By comparing this start (auxiliary) winding RPM-sensitive voltage to the main AC input voltage (which serves as a reference voltage), the switch determines when the start circuit should be de-energized.
The electronic switch interrupts the start circuit current after the motor has accelerated to the cut out speed, and reconnects the start circuit whenever the motor speed has decreased to a preselected cut in RPM level. Capacitor start/capacitor run motors exhibit current transients and higher voltages across the start switch. This electrical stress is due to the voltage differential which may exist between the start and run capacitors at the instant of switch closure.
Sinpac Switch Manual
This stress phenomenon occurs with both mechanical and electronic type start switches. SINPAC® Switches have voltage detection circuitry to minimize the effects of these conditions. Basic Operation Capacitor start/capacitor run motors and capacitor start motors provide continuous voltage sensing information which can be used to extract speed data from the voltage across the motor start (auxiliary) winding.
By comparing this start (auxiliary) winding RPM-sensitive voltage to the main AC input voltage (which serves as a reference voltage), the switch determines when the start circuit should be de-energized. The electronic switch interrupts the start circuit current after the motor has accelerated to the cut out speed, and reconnects the start circuit whenever the motor speed has decreased to a preselected cut in RPM level. Capacitor start/capacitor run motors exhibit current transients and higher voltages across the start switch.
This electrical stress is due to the voltage differential which may exist between the start and run capacitors at the instant of switch closure. This stress phenomenon occurs with both mechanical and electronic type start switches. SINPAC® Switches have voltage detection circuitry to minimize the effects of these conditions. Basic Operation Capacitor start/capacitor run motors provide continuous voltage sensing information which can be used to extract speed data from the voltage across the motor start winding. By comparing this start winding RPM-sensitive voltage to the main AC input voltage (which serves as a reference voltage), the switch determines when the start circuit should be de-energized. The electronic switch interrupts the start circuit current after the motor has accelerated to the cut out voltage (speed), and reconnects the start circuit whenever the speed sensitive circuit senses the motor voltage (speed) has decreased to a preselected cut in voltage (RPM) level. Capacitor start/capacitor run motors exhibit current transients and higher voltages across the start switch.
Stearns Sinpac Switch Ir 40a
These electrical stresses occur due to the switching of the two capacitors (start and run) that are connected in parallel during motor start and may have different voltages at time of restart. These stresses occur at restart with both mechanical and electronic start switches. The VR switch features circuitry designed to eliminate the effects of these conditions. Basic Operation 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.
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).