A large underground mining operation in South America recently carried out a major upgrade of its main ventilation line after experiencing repeated failures in its aging drive equipment. The mine’s ventilation fans run 24/7 under harsh environmental conditions, making energy performance and mechanical reliability critical for worker safety and production continuity. To address the issue, the engineering team selected a series of wolong nanyang motor high efficiency induction motor units to replace the legacy motors that had been in service for more than a decade.
The installation involved several 250 kW and 400 kW fan-drive motors positioned along the primary air shaft. These high efficiency induction motor models were chosen for their robust thermal design, strong overload capability, and reduced energy losses—features essential in dusty, high-temperature mining galleries. After commissioning, the team immediately recorded lower current draw at startup and a noticeable reduction in heat generation.
Within the first three months of operation, unplanned ventilation shutdowns dropped to zero. Maintenance logs showed fewer bearing temperature spikes, and vibration levels across the fan housings decreased by nearly 20%. The improved stability not only increased motor lifespan but also ensured consistent airflow throughout the mine, enhancing worker safety.
Energy audits conducted after the upgrade indicated a significant reduction in electricity consumption, saving the mine thousands of dollars monthly. The project leaders noted that the wolong nanyang motor upgrade delivered both operational security and long-term cost benefits, setting a new internal standard for future equipment modernization across other sections of the mine.
The success of this case has prompted several neighboring mines to explore similar solutions, reinforcing the growing reputation of high-efficiency motor technology in heavy industrial environments.
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