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.
Motors: | 1PS2 (LOHER CHEMSTAR) Loher name: ENGV |
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Shaft heights: | Frame sizes 090 - 355 mm (area of standard motors) |
Power range: | 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 |
Voltage range: | Low voltage up to 1000 V8 |
Rated voltages: | All of the usual low-voltages and voltage ranges according to IEC 60038. |
Operating mode: | S1 |
Degree of protection: | IP55, IP56, to IP66 |
Cooling type: | IC 411 |
Type of construction: | IM B3 |
Enclosure: | Gray cast iron |
Bearings: | Ball bearings |
Standards: | IEC, EN, DIN, VDE |
Types of protection: | "e" as well as dust explosion protection according to EN 50281-1-1 / EN 50281-1-2 |
Noise level: | All motors are noise-optimized (noise limit values according to EN 60034-9), |
Options:
Special versions e.g. for: