A slip ring is an electromechanical device that allows the
transmission of power and electrical signals from a stationary to a rotating
structure. A slip ring can be used in any electromechanical system that
requires rotation while transmitting power or signals. It can improve
mechanical performance, simplify system operation and eliminate damage-prone
wires dangling from movable joints.
Also called rotary electrical interfaces, rotating
electrical connectors , collectors , swivels , or electrical rotary joints ,
these rings are commonly found in slip ring motors, electrical generators for
alternating current (AC) systems and alternators and in packaging machinery,
cable reels, and wind turbines . They can be used on any rotating object to
transfer power, control circuits, or analog or digital signals including data
such as those found on aerodrome beacons, rotating tanks , power shovels ,
radio telescopes or heliostats .
A slip ring is a method of making an electrical connection
through a rotating assembly. Formally, it is an electric transmission device
that allows energy flow between two electrical rotating parts, such as in a
motor.