Siemens electrical equipment for two winders in Chinese coal mine

The Siemens Industrial Solutions and Services Group (I&S) is to equip two winders at Shandong Luneng Group’s Guotun coal mine in China with power-supply, drive and automation technology. The project is valued at around €4 million. One winder is to be put into operation in the middle of 2007 and the other one in the second half of 2008.

The Shandong Luneng Group is the leading supplier of electrical energy in Shandong province, which has approximately 93 million inhabitants. The company is developing the Jinje coal mining region in the west of the province. In future, 2.4 Mt/y of coal is to be extracted in the Goutun mine.

Siemens will supply and install the electrical equipment for the two shaft winding installations in the mine. The production shaft will be fitted with a synchronous motor with an output of 4.2 MW, while the supply shaft will be provided with a motor of 1.3 MW output. Medium-voltage Sinamics SM150 converters will supply the motors with power while a special winding controller will ensure safe and precision positioning of the cages. The shaft winding installations will thus be equipped with an effective and highly available drive solution, whereby operator control and monitoring will be enabled by a sophisticated visualization system. The scope of supply includes transformers, medium and low-voltage switchgear and the hydraulic brake system. Siemens is also responsible for on-site commissioning. Siemag is supplying the mechanical components of the shaft winding installations.

Siemens says the main reasons is was awarded the contract was its local presence in Jinan and the good experience remembered by Luneng from previous joint projects in the area of power transfer. Mr. Zhao, Project Manager for Guotun at Shandong Luneng, said: “We have confidence in Siemens and look forward to working with the company for a long time in the future”.

Siemens long history with China goes back to 1872, when the company delivered China’s first pointer telegraph. All business segments of Siemens worldwide are active in China today, including Information and Communications, Automation and Control, Power, Transportation, Medical, Lighting as well as Household Appliances. Core business areas are infrastructure development and industrial solutions. To date, Siemens has established more than 70 operating companies, 58 regional offices, and with about 36,000 highly qualified local staff in China.

The Siemens Industrial Solutions and Services Group (I&S) is the integrator of systems and solutions for industrial and infrastructure facilities and global service provider for the plant and projects business covering planning, installation, operation and the entire life cycle. I&S uses its own products and systems and process technologies.