LOHER Motors with type of protection "e" (increase safety) distinguish themselves as the various components are optimally harmonized with one another (winding / rotor and components).
This is the reason that special construction regulations also apply for these motors.
When compared to motors with a flameproof enclosure, which makes any ignition non-hazardous, the protection philosophy for these motors is to avoid ignition, even when a fault situation occurs.
The permissible winding temperatures are reduced, which in turn results in a longer lifetime and a low risk of ignition.
Fault situation "locked rotor": LOHER Ex e motors set themselves apart as a result of the higher (than specified) safe locked rotor time - t_E - this makes drive monitoring simpler, safer and uncritical.
"Increased safety" therefore also involves a longer service life and especially a higher degree of reliability and operational safety.