![foto-sensor-SDM-2021](https://i0.wp.com/www.treetech.com.br/wp-content/uploads/2021/11/foto-sensor-SDM-2021.jpg?fit=300%2C283&ssl=1)
The Smart Device for OLTC Torque – SDM performs online diagnosis of the OLTC, making use of measurements, oscillography and algorithms that supervise the triggering mechanism. Moreover, the SDM supervises the mechanical performance in addition to directly assisting the control and maintenance planning of the OLTC.