Latest Blogs

The Think Thermally and MotorTalk blogs are updated monthly, written by Snell instructors and consultants for those interested or involved with infrared thermography and electric motor testing (EMT). Electrical, mechanical, building applications, and EMT are covered in this blog along with discussions on theory, equipment, tips, news, and much more.
View All Blogs »

Motor Talk

The Snell Group | Aug 13, 2020
Identifying Blade Pass Frequencies with Motor Current
Every 21 st Century maintenance program should include monitoring of energized critical motors. Monitoring motors can identify many mechanical anomalies within the motor or driven load. An electric motor in operation simply converts electrical energy into mechanical energy. That energy is in the form of torque...


The Snell Group | Jul 17, 2020
abnormal electrical resistance is evident in the pattern of localized heating at the pinch point of the switch.
Commençons cette discussion en précisant qu’il s’agit en fait de la « température apparente » des commutateurs. Tel que discuté dans nos cours de niveau I et de niveau II, les surfaces métalliques nues sont de mauvais émetteurs, et que d’essayer de pouvoir capter leur température...