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 - tE - 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.
1PS2 (LOHER CHEMSTAR) Loher name: ENGV
Frame sizes 090 - 355 mm (area of standard motors)
Up to 220 kW (thermally utilized according to temperature class B at TU = 40 °C)
Number of poles:
2 - 8 pole; also higher pole numbers for special versions
Low voltage up to 1000 V8
All of the usual low-voltages and voltage ranges according to IEC 60038.
Degree of protection:
IP55, IP56, to IP66
Type of construction:
Gray cast iron
IEC, EN, DIN, VDE
Types of protection:
"e" as well as dust explosion protection according to EN 50281-1-1 / EN 50281-1-2
All motors are noise-optimized (noise limit values according to EN 60034-9),
Special versions e.g. for: