As the leader in the field of power transmission, high-current
slip ring is an indispensable rotating conductive device on some heavy equipment. Because it needs to transmit a large current, it mostly adopts an empty frame structure to obtain better heat dissipation capacity. However, this structure is not suitable for transmitting signals. However, some large-scale equipment also has requirements for signal transmission, which requires integrating corresponding signal paths for the slip rings used for them. Faced with this demand, we usually add a hollow shaft slip ring outside the high current module to transmit current and weak current signals below 50A.
However, the current transmitted by some high-current slip rings is too large, which leads to the magnetic field generated during operation that can interfere with the transmission of weak current signals. In addition, some high-current products are suitable for equipment or working scenarios. The reason is that the working efficiency of the electrical signal module will decrease. At this time, it is necessary to integrate the optical
fiber slip ring to solve the problem of signal transmission. As we all know, the medium transmitted by the optical fiber slip ring is laser, which can completely avoid the influence of electromagnetic on the signal, so the optical fiber slip ring is seen in the
High Current Slip Ring. Not surprising.
In the application of high-current slip rings, there is another case, that is, it is necessary to transmit power and signals to a distance of thousands of meters, and the distance of weak current transmission is limited, so in order to improve the transmission distance of power, The voltage of such high-current slip rings usually reaches more than 1000 volts, and the high voltage will bring great trouble to the transmission of weak current signals. In addition, the transmission distance of weak current signals is very short. If you want to achieve long-distance weak current on these devices The transmission of the signal will make the system very complicated, and the gain will outweigh the loss, so the integrated optical fiber slip ring is a very good choice.
From the product cases developed by our company, many high-current slip rings integrated with optical fiber slip rings basically have a voltage exceeding 2000V, but their single-circuit current is relatively small, only about 50~100A. Of course, due to the optical fiber Depending on the type, the optical fiber slip rings used in such high current slip rings that support long-distance transmission of current signals are originally multi-channel single-mode optical fiber slip rings, which combine single-mode optical fiber slip rings with high-voltage high-current The slip rings are integrated to easily transmit signals and power beyond 5000 meters.
