What is a reverse contactor?
The reversing contactor is a kind of special product that can be built by combining two standard contactors by use of a mechanical interlock unit. Reversing contactors are designed for demanding forward/reverse operating of three-phase AC motors. Interlock can be placed in between two contactors.
What is the difference between reversing and non reversing contactors?
The difference, as far as motor protection is concerned is nothing. This is because a reversing starter is nothing more than two contactors instead of one for the non-reversing. A reversing starter uses one contactor for forward (pass through) and the second to swap phases for reversal when energized.
What is reversing starter?
The Reversing Starter is a special type of push button starter wherein addition to starting/ stopping of motors the director of rotation of a three phase induction motor can be done by inter changing the connection of any two terminals of the supplies which is done through two separate contactors, one for forward and …
How many power contacts are needed for a forward reversing starter?
two sets
Forward / reverse starters will come with two sets of normally open auxiliary contacts to act as holding contacts in each direction. They will also come with two sets of normally closed auxiliary contacts to act as electrical interlocks.
How do you reverse the direction of a single phase motor?
To reverse rotation on a single phase capacitor start motor, you will need to reverse the polarity of the starter winding. This will cause the magnetic field to change directions, and the motor will follow. In order to achieve this, you can swap the connections on either end of the winding.
Can all PSC motors be reversed?
3 wire PSC motors can be reversed with a single pole/double throw switch to reverse. 4 wire PSC motors require a triple pole/double throw switch to reverse.
What is a reversing motor starter?
How are reversing contactors wired on a plate?
The reversing contactors are delivered open, wired with their power connections.The control circuit is to be wired by the customer. Protection IP20 for the connecting terminals. The VOA..-30M reversing contactors are provided for fixing on a plate, or rail 35 x 7.5 mm or 35 x 15 mmaccording to EN 50022, and comprises:
What are the interlocking methods for reversing control?
Interlocking Methods For Reversing Control Basic Circuits Forward Re Verse Control Developing A Wiring Diagram And Reversing Single Phase Split Motors Electric Equipment Interlocking Methods For Reversing Control Basic Circuits Type Of Contactor For Direction Change Single Phase Im Electrical Engineering General Discussion Eng Tips
Why do you need a reverse control circuit?
This sudden reversal () can be hard on the motor, but if quick reversal of the motor is required, this circuit can be a solution. A device that controls the flow of electrical power to a motor. It is designed to safely start and stop a motor, and provide overload protection.
How is a motor sent in the reverse direction?
In order to send the motor in the reverse direction, the forward coil must be de-energized. To do this, the stop button must be pressed, then the reverse pushbutton will be able to energize the reverse coil. Regardless of the direction the motor is spinning in, this circuit will operate as a standard three-wire circuit providing