Logo Sentera
Sentera – your partner in HVAC control solutions
FAQ     ||
English
English
Search
Allow us to inform you
Leave us your contact data so that we can communicate with you.

Close

What motor insulation class is required in combination with a fan speed controller or VFD?

Motor and fan related questions
The insulation　of the motor windings prevents short circuits in the windings or connection of the winding to the protective earth. The class　of　insulation　of a motor winding defines the strength of　insulation　required with respect to maximum temperature rise of the motor. Different motor types have different temperature rise characteristics in function of the duty cycle and the size of the motor enclosure. Usually Class F insulation (or higher) is suitable for VFD use.
Recent news
Date 16/03/2021
CO2 monitoring system to reduce the risk of COVID-19 contamination
CO2 monitoring system to reduce the risk of COVID-19 contamination Fresh indoor air reduces the risk of COVID-19 contaminations. Sentera HVAC sensors check whether there is sufficient fresh air supply. The measurements can be visualised via a 5-inch touchscreen. >>>
Date 01/02/2021
CO2 sensors with visual and audible alert
CO2 sensors with visual and audible alert Too high CO2 concentrations? Sentera CO2 sensors are now available with audible alert. On top of that, the green, yellow and red LED offer a clear, visual indication of the CO2 level. The supply voltage is 230 V or 24 V. >>>
Date 30/10/2020
Ventilation systems in Covid-19 times
Ventilation systems in Covid-19 times Ventilation systems in Covid-19 times >>>