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The island of Borneo, where the state of Sarawak is located. A popular tourist destination that is rich with an abundance of nature.
The power station generates electricity for some 160,000 households nearby, including the state capital of Kuching.
Meidensha delivered a full power generation system (including 4 generators, control panels and transformers). The system give a maximum power generation capacity of 108 MW (approximately 1/3 of the Kurobegawa No. 4 Hydropower Plant).
The first step was to lift the generators that are installed underground, and dismantle them. The rotor inside the generator is 4.2m in diameter and 90t in weight.
Every detail of the rotor was examined for loose coil clamps and bolts, and then varnish was applied to renew the insulation.
The wedges that held the stator coils in place were checked for looseness. There were a total of 252 coils, and each and every one of them was examined meticulously, and if wedges were found to be loose, they were hammered back in tight again and were given a new coat of varnish.
Each and every bolt of every component was inspected, and was replaced with a new one if damage was found. Finally, the bearing metals were checked thoroughly for any breakage or cracking.
Mounting the massive rotor inside the stator with just a 19 mm gap was the key to installation. With a whole new lease on life thus given, the power station would be able to supply electricity to the local communities for another 10 years.