Slip Ring Testing

Slip-Ring Collector Tester

A slip ring (in elec­trical engin­eer­ing terms) is a method of making an elec­trical connec­tion through a rotat­ing assembly. Slip rings, also called rotary elec­trical inter­faces, rotat­ing elec­trical connect­ors, collect­ors, swiv­els, or elec­trical rotary joints, are commonly found in elec­tric motors, elec­trical gener­at­ors for AC systems and gener­ally in all rotary systems with elec­trical connec­tions of sensors and receptors.

Two tribometer facil­it­ies for long-term tests of single slip-ring systems are avail­able at AAC: The 1st for elec­tro-tribolo­gical tests at room temper­at­ure on air, the 2nd for tests from -5 to +60 °C on air. With these test­ing facil­it­ies the perform­ance of slip-rings with stand­ard coat­ings compared with the new coat­ings is eval­u­ated in order to optim­ize the coat­ing type as well as the para­met­ers for differ­ent applic­a­tions of the slip-rings.

By means of the criteria wear, fric­tion coef­fi­cient, elec­trical resist­ance and SEM/EDX post-test analysis, correl­a­tions between alloy, type of particles, coat­ing para­met­ers and the criteria named above can be established.

In the follow­ing picture the SRC-test­ing facil­it­ies developed at AAC is shown.