Manufacturer: Kamei Iron Works Limited

Features

• This shore power reel was delivered approximately two years ago.
• It is a winch designed to deploy and retrieve the heavy cable that connects a ship to shore power while a ferry is docked, allowing the vessel to draw electricity from land instead of relying on its onboard generators.
• In other words, it functions as a large-scale power cable system for ships—similar to plugging a household appliance into an outlet, but on a much larger scale.

• This is the slip ring assembly, rated at AC 200V, 200A, 3-phase.
  Each ring has two carbon brushes for electrical contact, capable of carrying up to 200A.
  In this instance, one of the two brushes lost contact for some reason, causing current to flow through only one brush. As a result,…

It got burned out… (sob)
As it is, it’ll interfere with the electrical connection and continuing to use it will likely worsen the burn damage, so I’ll just polish the ring to death.

The burn damage indentation couldn’t be completely removed, but this is the best I could do under the circumstances. So, I’ve asked the customer to monitor it as is for now.
However, depending on how things progress, we may have to consider replacing the ring itself with a new one… It’s incredibly expensive though…

All three rings have been polished and restored; they appear to be functioning properly now.
Electricity is invisible, so handling and maintenance must be performed with extreme caution—failure to do so can be fatal.