The Electrodrives team successfully completed the installation and commissining of a new LRS (Liquid Resistance Starter) designed for the controlled start‑up of a 4.3 MW motor at a major mining complex located in the Kédougou region, in the heart of the Birimian Belt—one of the most significant gold‑producing areas in West Africa.
This mining site is known for its large scale, long operational life, and strategic role in the country’s gold production.
Electrodrives has been working with this client since 2007, when it installed a SER Drive for which continues to provide maintenance services.
A new LRS to ensure reliability and operational continuity
The new liquid rheostat replaces equipment rated for 3320 V and 710 A, ensuring a progressive, stable, and safe start‑up of the mill. This upgrade reduces mechanical and electrical stresses, increases operational reliability, and reinforces the continuity of a critical process for the plant.
In addition, the LRS is prepared to integrate RotorProtek, Electrodrives’ advanced technology that detects abnormal rotor‑current conditions during start‑up by monitoring phase currents while maintaining a historical log of start‑ups to support diagnostics and root‑cause analysis.
During the intervention, the Electrodrives team also carried out a full inspection of the SER Drive (Slip Energy Recovery Drive), verifying operation and ensuring that both critical lines maintain the expected reliability levels for a mining operation of this demand.
Electrodrives has maintained a technical collaboration with this mining complex since 2007, supporting the evolution of processes. Throughout this time, we have continued working together toward more robust and safer solutions. This long‑standing relationship reflects precisely what our commitment represents: assuming the technical responsibility so that the client can remain unconcerned about the correct functioning of their slip ring motor systems.
Technical Contact: Moisés Zarzuela
