Slip Rings Overview

The invention of slip rings allow humans to transmit power and electricity from a stationary structure to a rotating one. As slip rings make the transmission easy, it improves the performance of rotating equipment, generators, turbines and other objects that require energy. These rings differ in configuration and sizes depending on where they are to […]

Slip Rings Overview

The invention of slip rings allow humans to transmit power and electricity from a stationary structure to a rotating one. As slip rings make the transmission easy, it improves the performance of rotating equipment, generators, turbines and other objects that require energy. These rings differ in configuration and sizes depending on where they are to be used.

Slip Ring Specifications

Even though these rings are to be made in different configurations, there are 3 main criteria that the rings must possess in order for them to work successfully. One is the physical dimension or feature of the rings. Second is the type of circuit that would be used including the voltage and electric current that would pass through. Thirdly, is the working environment that the ring would be exposed to, including the temperature, humidity and vibration which can affect the overall design and operation of the ring. Aside from these 3 major specifications, resistance, isolation of circuits, weight and other extras might also need to be considered when assembling the slips.

Types of Rings

One of the common designs in the industry today is the Capsule slip ring. This type works best for providing power to devices that have combination circuits example of which includes video, USB, CCTV sensors, Ethernet and other devices that do not require strong signal(s).

“Through Hole” are slips that have through bore designed for radar, rotary sensor, packing machines, military equipment, wind turbines and emergency lighting. Features for this type include its compact design, 360 degree continuous power transmission, low wear as well as the ability to transmit analog and digital signals.

Medical and LED sign boards on the other hand make use of Mercury slip rings. The mercury works the same as that of the electrical one; however, it takes advantage of the property of mercury to transmit electric current and signal under normal temperature. It works faster than other types, is easily installed and more durable than traditional ones.

Another type is the Wind turbine ring. These are exclusive for wind turbine generators and help in generating electricity from the turbines more efficiently. It is resistant to corrosion, low temperatures, shock and wind. Current rating is about 15-30A, work speed at 0-300RPM and dielectric strength is about 500VAC at 50Hz.

Last, but not the least is the Liquid and Gas type. These rings are used exclusively by companies that make use of polishing, automation, packing and rotary equipment. The compact design allows for electricity to pass through 20 channels.

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